chore(release): v0.17.6

When targeting MV2, all MV3 keys will be removed. When targeting MV3, all MV2 keys will be removed.

.gitattributes

@@ -1,2 +1,5 @@
 * text=auto eol=lf
 pnpm-lock.yaml linguist-generated
+package-lock.json linguist-generated
+bun.lockb linguist-generated
+yarn.lock linguist-generated

.github/actions/setup/action.yml

@@ -4,7 +4,7 @@ runs:
   using: composite
   steps:
     - name: Setup PNPM
-      uses: pnpm/action-setup@v2
+      uses: pnpm/action-setup@v3
       with:
         version: 8
     - name: Setup NodeJS

.github/dependabot.yml

@@ -9,3 +9,7 @@ updates:
     directory: '/' # Location of package manifests
     schedule:
       interval: 'monthly'
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'monthly'

.github/workflows/publish-docs.yml

@@ -14,7 +14,7 @@ jobs:
   publish:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
       - uses: docker/login-action@v3
         with:

.github/workflows/release.yml

@@ -5,13 +5,14 @@ on:
 jobs:
   validate:
     uses: './.github/workflows/validate.yml'
+    secrets: inherit
 
   publish:
     runs-on: ubuntu-22.04
     needs:
       - validate
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 

.github/workflows/sync-releases.yml

@@ -11,8 +11,8 @@ jobs:
   sync:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
-      - uses: pnpm/action-setup@v2
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v3
         with:
           version: 8
       - uses: actions/setup-node@v4

.github/workflows/validate.yml

@@ -10,30 +10,30 @@ jobs:
   formatting:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
       - run: pnpm format:check
   lint:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
       - run: pnpm lint
   type-check:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
       - run: pnpm compile
   validate-demo:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
-      - run: pnpm build:all
-        working-directory: demo
       - run: pnpm tsc --noEmit
         working-directory: demo
+      - run: pnpm build:all
+        working-directory: demo
       - run: pnpm wxt zip
         working-directory: demo
       - run: pnpm vitest run
@@ -41,17 +41,18 @@ jobs:
   tests:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
+      - uses: oven-sh/setup-bun@v1
       - name: pnpm test:coverage
         run: pnpm test:coverage --reporter=default --reporter=hanging-process
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
   windows-tests:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
       - run: pnpm test run
   template:
@@ -65,7 +66,7 @@ jobs:
           - vanilla
           - vue
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
       - run: pnpm pack
       - run: npm i

CHANGELOG.md

@@ -1,5 +1,592 @@
 # Changelog
 
+## v0.17.6
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.17.5...v0.17.6)
+
+### 🚀 Enhancements
+
+- Add warnings when important directories are missing ([#516](https://github.com/wxt-dev/wxt/pull/516))
+- Automatically remove top-level MV2-only or MV3-only keys ([#518](https://github.com/wxt-dev/wxt/pull/518))
+- Automatically generate `browser_action` based on `action` for MV2 ([#519](https://github.com/wxt-dev/wxt/pull/519))
+
+### 🩹 Fixes
+
+- **zip:** List all private packages correctly in a PNPM workspace ([#520](https://github.com/wxt-dev/wxt/pull/520))
+
+### 📖 Documentation
+
+- Mentions moving folders into `srcDir` ([9cd4e83](https://github.com/wxt-dev/wxt/commit/9cd4e83))
+
+### 🏡 Chore
+
+- **deps-dev:** Bump @types/react from 18.2.34 to 18.2.61 ([#510](https://github.com/wxt-dev/wxt/pull/510))
+
+## v0.17.5
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.17.4...v0.17.5)
+
+### 🚀 Enhancements
+
+- Expose package management utils under `wxt.pm` ([#502](https://github.com/wxt-dev/wxt/pull/502))
+- Download and override private packages for Firefox code review ([#507](https://github.com/wxt-dev/wxt/pull/507))
+
+### 📖 Documentation
+
+- Fix typos ([#503](https://github.com/wxt-dev/wxt/pull/503))
+- Add docs about configuring the manifest as a function ([195d2cc](https://github.com/wxt-dev/wxt/commit/195d2cc))
+- Fix CLI generation ([b754435](https://github.com/wxt-dev/wxt/commit/b754435))
+
+### 🏡 Chore
+
+- Use JSZip for `wxt zip`, enabling future features ([#501](https://github.com/wxt-dev/wxt/pull/501))
+
+### ❤️ Contributors
+
+- Btea ([@btea](http://github.com/btea))
+
+## v0.17.4
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.17.3...v0.17.4)
+
+### 🚀 Enhancements
+
+- Add basic content script to templates ([#495](https://github.com/wxt-dev/wxt/pull/495))
+- Add `ResolvedConfig.wxtModuleDir`, resolving the directory once ([#497](https://github.com/wxt-dev/wxt/pull/497))
+
+### 🩹 Fixes
+
+- Resolve the path to `node_modules/wxt` correctly ([#498](https://github.com/wxt-dev/wxt/pull/498))
+
+### 📖 Documentation
+
+- Added DocVersionRedirector to "Using WXT" section ([#492](https://github.com/wxt-dev/wxt/pull/492))
+- Fix typos ([f80fb42](https://github.com/wxt-dev/wxt/commit/f80fb42))
+- Add CRXJS to comparison page ([cb4f9aa](https://github.com/wxt-dev/wxt/commit/cb4f9aa))
+- Update comparison page ([35778f7](https://github.com/wxt-dev/wxt/commit/35778f7))
+- Update context usage ([012bd7e](https://github.com/wxt-dev/wxt/commit/012bd7e))
+- Add testing example for `ContentScriptContext` ([e1c6020](https://github.com/wxt-dev/wxt/commit/e1c6020))
+
+### 🏡 Chore
+
+- Fix tests after template change ([f9b0aa4](https://github.com/wxt-dev/wxt/commit/f9b0aa4))
+
+### ❤️ Contributors
+
+- Btea ([@btea](http://github.com/btea))
+- Leo Shklovskii <leo@thermopylae.net>
+
+## v0.17.3
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.17.2...v0.17.3)
+
+### 🚀 Enhancements
+
+- **storage:** Guarantee `storage.getItems` returns values in the same order as requested ([b5f4d8c](https://github.com/wxt-dev/wxt/commit/b5f4d8c))
+
+### 🩹 Fixes
+
+- Content scripts crash when using `storage.defineItem` ([77e6d1f](https://github.com/wxt-dev/wxt/commit/77e6d1f))
+- **storage:** Revert #478 and run migrations when item is defined and properly wait for migrations before allowing read/writes ([#487](https://github.com/wxt-dev/wxt/pull/487), [#478](https://github.com/wxt-dev/wxt/issues/478))
+
+## v0.17.2
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.17.1...v0.17.2)
+
+### 🩹 Fixes
+
+- Don't use sub-dependency binaries directly ([#482](https://github.com/wxt-dev/wxt/pull/482))
+
+## v0.17.1
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.17.0...v0.17.1)
+
+### 🩹 Fixes
+
+- Content scripts not loading in dev mode ([3fbbe2c](https://github.com/wxt-dev/wxt/commit/3fbbe2c))
+
+### 📖 Documentation
+
+- Lots of small typo fixes ([#480](https://github.com/wxt-dev/wxt/pull/480))
+
+### ❤️ Contributors
+
+- Leo Shklovskii ([@leos](https://github.com/leos))
+
+## v0.17.0
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.11...v0.17.0)
+
+### 🚀 Enhancements
+
+- **storage:** ⚠️  Improved support for default values on storage items ([#477](https://github.com/wxt-dev/wxt/pull/477))
+
+### 🩹 Fixes
+
+- **storage:** ⚠️  Only run migrations when the extension is updated ([#478](https://github.com/wxt-dev/wxt/pull/478))
+- Improve dev mode for content scripts registered at runtime ([#474](https://github.com/wxt-dev/wxt/pull/474))
+
+### 📖 Documentation
+
+- **storage:** Update docs ([91fc41c](https://github.com/wxt-dev/wxt/commit/91fc41c))
+
+#### ⚠️ Breaking Changes
+
+`v0.17.0` introduces several breaking changes to `wxt/storage`.
+
+First, if you were using `defineItem` with versioning and no default value, you will need to add `defaultValue: null` to the options and update the first type parameter:
+
+```ts
+// < 0.17
+const item = storage.defineItem<number>("local:count", {
+  version: ...,
+  migrations: ...,
+})
+
+// >= 0.17
+const item = storage.defineItem<number | null>("local:count", {
+  defaultValue: null,
+  version: ...,
+  migrations: ...,
+})
+```
+
+The `defaultValue` property is now required if passing in the second options argument. 
+
+If you exclude the second options argument, it will default to being nullable, as before.
+
+```ts
+const item: WxtStorageItem<number | null> = storage.defineItem<number>("local:count");
+const value: number | null = await item.getValue();
+```
+
+> If you don't use typescript, there aren't any breaking changes, this is just a type change.
+
+For storage items that are not nullable, the `watch` callback types has improved and will use the default value instead of `null` when the value is missing:
+
+```ts
+// >=0.17
+const item = storage.defineItem<number>("local:count", { defaultValue: 0 });
+item.watch((newValue: number | null, oldValue: number | null) => {
+  // ...
+});
+
+// >=0.17
+const item = storage.defineItem<number>("local:count", { defaultValue: 0 });
+item.watch((newValue: number, oldValue: number) => {
+  // ...
+});
+```
+
+You can also access the default value directly off the item:
+
+```ts
+console.log(item.defaultValue); // 0
+```
+
+The second breaking change is that migrations for versioned items only run when the extension is updated. Before, they were ran whenever the storage item was created, in any entrypoint (background, popup, content script, etc). Now, in v0.17, storage items will only run migrations when the `browser.runtime.onInstalled` event is fired with `reason = "update"` in the background. See the updated docs to make sure they run correctly: https://wxt.dev/guide/storage.html#running-migrations. TLDR: you need to import all storage items into the background entrypoint for the `onInstalled` hook to fire properly and thus run the migrations.
+
+To keep the old behavior, call the new `migrate` function to run migrations as soon as an item is defined:
+
+```ts
+const item = storage.defineItem(...);
+item.migrate();
+```
+
+## v0.16.11
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.10...v0.16.11)
+
+### 🩹 Fixes
+
+- Output main JS file for HTML entrypoints to chunks directory ([#473](https://github.com/wxt-dev/wxt/pull/473))
+
+### 🏡 Chore
+
+- **e2e:** Remove log ([4fda203](https://github.com/wxt-dev/wxt/commit/4fda203))
+
+### 🤖 CI
+
+- Fix codecov warning in release workflow ([7c6973f](https://github.com/wxt-dev/wxt/commit/7c6973f))
+- Upgrade `pnpm/action-setup` to v3 ([905bfc7](https://github.com/wxt-dev/wxt/commit/905bfc7))
+
+## v0.16.10
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.9...v0.16.10)
+
+### 🚀 Enhancements
+
+- Customize when content scripts are registered, in the manifest or at runtime ([#471](https://github.com/wxt-dev/wxt/pull/471))
+
+### 🩹 Fixes
+
+- Don't assume react when importing JSX entrypoints during build ([#470](https://github.com/wxt-dev/wxt/pull/470))
+- Respect `configFile` option ([#472](https://github.com/wxt-dev/wxt/pull/472))
+
+## v0.16.9
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.8...v0.16.9)
+
+### 🚀 Enhancements
+
+- Support setting side panel options in HTML file ([#468](https://github.com/wxt-dev/wxt/pull/468))
+
+### 🩹 Fixes
+
+- Fix order of ShadowRootUI hooks calling ([#459](https://github.com/wxt-dev/wxt/pull/459))
+
+### 📖 Documentation
+
+- Add wrapper div to react's `createShadowRootUi` example ([bc24ea4](https://github.com/wxt-dev/wxt/commit/bc24ea4))
+
+### 🏡 Chore
+
+- Simplify entrypoint types ([#464](https://github.com/wxt-dev/wxt/pull/464))
+
+### ❤️ Contributors
+
+- Okou ([@ookkoouu](https://github.com/ookkoouu))
+
+## v0.16.8
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.7...v0.16.8)
+
+### 🩹 Fixes
+
+- Watch files outside project root during development ([#454](https://github.com/wxt-dev/wxt/pull/454))
+
+### 📖 Documentation
+
+- Add loading and error states for "Who's using WXT" section ([447a48f](https://github.com/wxt-dev/wxt/commit/447a48f))
+
+## v0.16.7
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.6...v0.16.7)
+
+### 🚀 Enhancements
+
+- Generate ESLint globals file for auto-imports ([#450](https://github.com/wxt-dev/wxt/pull/450))
+
+### 🔥 Performance
+
+- Upgrade Vite to 5.1 ([#452](https://github.com/wxt-dev/wxt/pull/452))
+
+### 📖 Documentation
+
+- Add section about dev mode differences ([a0d1643](https://github.com/wxt-dev/wxt/commit/a0d1643))
+- Remove anchor from content script ui examples ([87a62a1](https://github.com/wxt-dev/wxt/commit/87a62a1))
+
+### 🏡 Chore
+
+- **e2e:** Use `wxt prepare` instead of `wxt build` when possible to speed up E2E tests ([#451](https://github.com/wxt-dev/wxt/pull/451))
+
+## v0.16.6
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.5...v0.16.6)
+
+### 🚀 Enhancements
+
+- Add option to customize the analysis artifacts output ([#431](https://github.com/wxt-dev/wxt/pull/431))
+
+### 🩹 Fixes
+
+- Use `insertBefore` on mounting content script UI ([ba85fdf](https://github.com/wxt-dev/wxt/commit/ba85fdf))
+
+### 💅 Refactors
+
+- Use `Element.prepend` on mounting UI ([295f860](https://github.com/wxt-dev/wxt/commit/295f860))
+
+### 📖 Documentation
+
+- Fix `createShadowRootUi` unmount calls ([946072f](https://github.com/wxt-dev/wxt/commit/946072f))
+
+### 🏡 Chore
+
+- Enable skipped test since it works now ([6b8dfdf](https://github.com/wxt-dev/wxt/commit/6b8dfdf))
+
+### ❤️ Contributors
+
+- Lionelhorn ([@Lionelhorn](https://github.com/Lionelhorn))
+- Okou ([@ookkoouu](https://github.com/ookkoouu))
+
+## v0.16.5
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.4...v0.16.5)
+
+### 🩹 Fixes
+
+- Support node 20 when running `wxt submit` ([e835502](https://github.com/wxt-dev/wxt/commit/e835502))
+
+### 📖 Documentation
+
+- Remove "coming soon" from automated publishing feature ([2b374b9](https://github.com/wxt-dev/wxt/commit/2b374b9))
+
+## v0.16.4
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.3...v0.16.4)
+
+### 🚀 Enhancements
+
+- Automatically convert MV3 `web_accessible_resources` to MV2 ([#423](https://github.com/wxt-dev/wxt/pull/423))
+- Add option to customize the analysis output filename ([#426](https://github.com/wxt-dev/wxt/pull/426))
+
+### 🩹 Fixes
+
+- Don't use immer for `transformManifest` ([#424](https://github.com/wxt-dev/wxt/pull/424))
+- Exclude analysis files from the build summary ([#425](https://github.com/wxt-dev/wxt/pull/425))
+
+### 🏡 Chore
+
+- Fix fake path in test data generator ([d0f1c70](https://github.com/wxt-dev/wxt/commit/d0f1c70))
+
+## v0.16.3
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.2...v0.16.3)
+
+### 🚀 Enhancements
+
+- Hooks ([#419](https://github.com/wxt-dev/wxt/pull/419))
+
+### 🩹 Fixes
+
+- **init:** Use `ungh` to prevent rate limits when loading templates ([37ad2c7](https://github.com/wxt-dev/wxt/commit/37ad2c7))
+
+### 📖 Documentation
+
+- Fix typo of intuitive ([#415](https://github.com/wxt-dev/wxt/pull/415))
+- Fix typo of opinionated ([#416](https://github.com/wxt-dev/wxt/pull/416))
+
+### 🏡 Chore
+
+- Add dependabot for github actions ([#404](https://github.com/wxt-dev/wxt/pull/404))
+- **deps-dev:** Bump happy-dom from 12.10.3 to 13.3.8 ([#411](https://github.com/wxt-dev/wxt/pull/411))
+- **deps-dev:** Bump typescript from 5.3.2 to 5.3.3 ([#409](https://github.com/wxt-dev/wxt/pull/409))
+- Register global `wxt` instance ([#418](https://github.com/wxt-dev/wxt/pull/418))
+
+### ❤️ Contributors
+
+- Chen Hua ([@hcljsq](https://github.com/hcljsq))
+- Florian Metz ([@Timeraa](http://github.com/Timeraa))
+
+## v0.16.2
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.1...v0.16.2)
+
+### 🩹 Fixes
+
+- Don't crash background service worker when using `import.meta.url` ([#402](https://github.com/wxt-dev/wxt/pull/402))
+
+## v0.16.1
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.16.0...v0.16.1)
+
+### 🩹 Fixes
+
+- Don't require config to run `wxt submit init` ([9318346](https://github.com/wxt-dev/wxt/commit/9318346))
+
+### 📖 Documentation
+
+- Add premid extension to homepage ([#399](https://github.com/wxt-dev/wxt/pull/399))
+
+### 🏡 Chore
+
+- **templates:** Upgrade to wxt `^0.16.0` ([f0b2a12](https://github.com/wxt-dev/wxt/commit/f0b2a12))
+
+### ❤️ Contributors
+
+- Florian Metz ([@Timeraa](http://github.com/Timeraa))
+
+## v0.16.0
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.15.4...v0.16.0)
+
+### 🚀 Enhancements
+
+- ⚠️  ESM background support ([#398](https://github.com/wxt-dev/wxt/pull/398))
+
+### 📖 Documentation
+
+- Document how to opt into ESM ([1e12ce2](https://github.com/wxt-dev/wxt/commit/1e12ce2))
+
+### 🏡 Chore
+
+- **deps-dev:** Bump lint-staged from 15.2.0 to 15.2.1 ([#395](https://github.com/wxt-dev/wxt/pull/395))
+- **deps-dev:** Bump p-map from 7.0.0 to 7.0.1 ([#396](https://github.com/wxt-dev/wxt/pull/396))
+- **deps-dev:** Bump @vitest/coverage-v8 from 1.0.1 to 1.2.2 ([#397](https://github.com/wxt-dev/wxt/pull/397))
+
+#### ⚠️ Breaking Changes
+
+In [#398](https://github.com/wxt-dev/wxt/pull/398), HTML pages' JS entrypoints in the output directory have been moved. Unless you're doing some kind of post-build work referencing files, you don't have to make any changes.
+
+- Before:
+   ```
+   .output/
+     <target>/
+       chunks/
+         some-shared-chunk-<hash>.js
+         popup-<hash>.js
+       popup.html
+   ```
+- After:
+   ```
+   .output/
+     <target>/
+       chunks/
+         some-shared-chunk-<hash>.js
+       popup.html
+       popup.js
+   ```
+
+This effects all HTML files, not just the Popup. The hash has been removed, and it's been moved to the root of the build target folder, not inside the `chunks/` directory. Moving files like this has not historically increased review times or triggered in-depth reviews when submitting updates to the stores.
+
+## v0.15.4
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.15.3...v0.15.4)
+
+### 🩹 Fixes
+
+- **submit:** Load `.env.submit` automatically when running `wxt submit` and `wxt submit init` ([#391](https://github.com/wxt-dev/wxt/pull/391))
+
+## v0.15.3
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.15.2...v0.15.3)
+
+### 🩹 Fixes
+
+- **dev:** Reload `<name>/index.html` entrypoints properly on save ([#390](https://github.com/wxt-dev/wxt/pull/390))
+
+## v0.15.2
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.15.1...v0.15.2)
+
+### 🚀 Enhancements
+
+- Add `submit` command ([#370](https://github.com/wxt-dev/wxt/pull/370))
+
+### 🩹 Fixes
+
+- **dev:** Resolve `script` and `link` aliases ([#387](https://github.com/wxt-dev/wxt/pull/387))
+
+### ❤️ Contributors
+
+- Nenad Novaković ([@dvlden](https://github.com/dvlden))
+
+## v0.15.1
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.15.0...v0.15.1)
+
+### 🚀 Enhancements
+
+- Allow passing custom preferences to chrome, enabling dev mode on `chrome://extensions` and allowing content script sourcemaps automatically ([#384](https://github.com/wxt-dev/wxt/pull/384))
+
+### 🩹 Fixes
+
+- **security:** Upgrade to vite@5.0.12 to resolve CVE-2024-23331 ([39b76d3](https://github.com/wxt-dev/wxt/commit/39b76d3))
+
+### 📖 Documentation
+
+- Fixed doc errors on the guide/extension-api page ([#383](https://github.com/wxt-dev/wxt/pull/383))
+
+### 🏡 Chore
+
+- Fix vite version conflicts in demo extension ([98d2792](https://github.com/wxt-dev/wxt/commit/98d2792))
+
+### ❤️ Contributors
+
+- 0x7a7a ([@0x7a7a](https://github.com/0x7a7a))
+
+## v0.15.0
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.14.7...v0.15.0)
+
+### 🚀 Enhancements
+
+- **zip:** ⚠️  Add `includeSources` and rename `ignoredSources` to `excludeSources` ([#378](https://github.com/wxt-dev/wxt/pull/378))
+
+### 🩹 Fixes
+
+- Generate missing sourcemap in `wxt:unimport` plugin ([#381](https://github.com/wxt-dev/wxt/pull/381))
+- ⚠️  Move browser constants to `import.meta.env` ([#380](https://github.com/wxt-dev/wxt/pull/380))
+- Enable inline sourcemaps by default during development ([#382](https://github.com/wxt-dev/wxt/pull/382))
+
+### 📖 Documentation
+
+- Fix typo ([f9718a1](https://github.com/wxt-dev/wxt/commit/f9718a1))
+
+### 🏡 Chore
+
+- Update contributor docs ([eb758bd](https://github.com/wxt-dev/wxt/commit/eb758bd))
+
+#### ⚠️ Breaking Changes
+
+Renamed `zip.ignoredSources` to `zip.excludeSources` in [#378](https://github.com/wxt-dev/wxt/pull/378)
+
+Renamed undocumented constants for detecting the build config at runtime in [#380](https://github.com/wxt-dev/wxt/pull/380). Now documented here: https://wxt.dev/guide/multiple-browsers.html#runtime
+
+- `__BROWSER__` &rarr; `import.meta.env.BROWSER`
+- `__COMMAND__` &rarr; `import.meta.env.COMMAND`
+- `__MANIFEST_VERSION__` &rarr; `import.meta.env.MANIFEST_VERSION`
+- `__IS_CHROME__` &rarr; `import.meta.env.CHROME`
+- `__IS_FIREFOX__` &rarr; `import.meta.env.FIREFOX`
+- `__IS_SAFARI__` &rarr; `import.meta.env.SAFARI`
+- `__IS_EDGE__` &rarr; `import.meta.env.EDGE`
+- `__IS_OPERA__` &rarr; `import.meta.env.OPERA`
+
+### ❤️ Contributors
+
+- Nenad Novaković ([@dvlden](https://github.com/dvlden))
+
+## v0.14.7
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.14.6...v0.14.7)
+
+### 🩹 Fixes
+
+- Improve error messages when importing and building entrypoints ([3b63a51](https://github.com/wxt-dev/wxt/commit/3b63a51))
+- **storage:** Throw better error message when importing outside a extension environment ([35865ad](https://github.com/wxt-dev/wxt/commit/35865ad))
+- Upgrade `web-ext-run` ([62ecb6f](https://github.com/wxt-dev/wxt/commit/62ecb6f))
+
+### 📖 Documentation
+
+- Add `matches` to content script examples ([dab8efa](https://github.com/wxt-dev/wxt/commit/dab8efa))
+- Fix incorrect sample code ([#372](https://github.com/wxt-dev/wxt/pull/372))
+- Document defined constants for the build target ([68874e6](https://github.com/wxt-dev/wxt/commit/68874e6))
+- Add missing `await` to `createShadowRootUi` examples ([fc45c37](https://github.com/wxt-dev/wxt/commit/fc45c37))
+
+### ❤️ Contributors
+
+- 東奈比 ([@dongnaebi](http://github.com/dongnaebi))
+
+## v0.14.6
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.14.5...v0.14.6)
+
+### 🚀 Enhancements
+
+- Restart dev mode when saving config ([#365](https://github.com/wxt-dev/wxt/pull/365))
+- Add basic validation for entrypoint options ([#368](https://github.com/wxt-dev/wxt/pull/368))
+
+### 🩹 Fixes
+
+- Add subdependency bin directory so `wxt build --analyze` works with PNPM ([#363](https://github.com/wxt-dev/wxt/pull/363))
+- Sort build output files naturally ([#364](https://github.com/wxt-dev/wxt/pull/364))
+
+### 🤖 CI
+
+- Check for type errors in demo before building ([4b005b4](https://github.com/wxt-dev/wxt/commit/4b005b4))
+
+## v0.14.5
+
+[compare changes](https://github.com/wxt-dev/wxt/compare/v0.14.4...v0.14.5)
+
+### 🚀 Enhancements
+
+- Add `dev.reloadCommand` config ([#362](https://github.com/wxt-dev/wxt/pull/362))
+
+### 🩹 Fixes
+
+- Disable reload dev command when 4 commands are already registered ([#361](https://github.com/wxt-dev/wxt/pull/361))
+
 ## v0.14.4
 
 [compare changes](https://github.com/wxt-dev/wxt/compare/v0.14.3...v0.14.4)
@@ -440,7 +1027,7 @@
 
 ### 🏡 Chore
 
-- Remove whitespace from genearted `.wxt` files ([#211](https://github.com/wxt-dev/wxt/pull/211))
+- Remove whitespace from generated `.wxt` files ([#211](https://github.com/wxt-dev/wxt/pull/211))
 - Upgrade templates to `wxt@^0.9.0` ([#214](https://github.com/wxt-dev/wxt/pull/214))
 - Update Vite dependency range to `^4.0.0 || ^5.0.0-0` ([f1e8084](https://github.com/wxt-dev/wxt/commit/f1e8084be89e512dde441b9197a99183c497f67d))
 
@@ -948,8 +1535,8 @@
 - **deps-dev:** Bump vitest from 0.34.1 to 0.34.3 ([#99](https://github.com/wxt-dev/wxt/pull/99))
 - Increase E2E test timeout because GitHub Actions Window runner is slow ([2a0842b](https://github.com/wxt-dev/wxt/commit/2a0842b))
 - **deps-dev:** Bump vitepress from 1.0.0-rc.4 to 1.0.0-rc.10 ([#96](https://github.com/wxt-dev/wxt/pull/96))
-- Fix test watcher restarting indefinetly ([2c7922c](https://github.com/wxt-dev/wxt/commit/2c7922c))
-- Remove explict icon config from templates ([93bfee0](https://github.com/wxt-dev/wxt/commit/93bfee0))
+- Fix test watcher restarting indefinitely ([2c7922c](https://github.com/wxt-dev/wxt/commit/2c7922c))
+- Remove explicit icon config from templates ([93bfee0](https://github.com/wxt-dev/wxt/commit/93bfee0))
 - Use import aliases in Vue template ([#104](https://github.com/wxt-dev/wxt/pull/104))
 
 #### ⚠️ Breaking Changes
@@ -1009,7 +1596,7 @@
 - Branding and logo ([#60](https://github.com/wxt-dev/wxt/pull/60))
 - Simplify binary setup ([#62](https://github.com/wxt-dev/wxt/pull/62))
 - Add Solid template ([#63](https://github.com/wxt-dev/wxt/pull/63))
-- Increate E2E test timeout to fix flakey test ([dfe424f](https://github.com/wxt-dev/wxt/commit/dfe424f))
+- Increase E2E test timeout to fix flakey test ([dfe424f](https://github.com/wxt-dev/wxt/commit/dfe424f))
 
 ### 🤖 CI
 
@@ -1285,7 +1872,7 @@ Initial release of WXT. Full support for production builds and initial toolkit f
 - Export and bootstrap the `/client` package ([5b07c95](https://github.com/wxt-dev/wxt/commit/5b07c95))
 - Resolve entrypoints based on filesystem ([a63f061](https://github.com/wxt-dev/wxt/commit/a63f061))
 - Separate output directories for each browser/manifest version ([f09ffbb](https://github.com/wxt-dev/wxt/commit/f09ffbb))
-- Build entrypoints and output `manfiest.json` ([1e7c738](https://github.com/wxt-dev/wxt/commit/1e7c738))
+- Build entrypoints and output `manifest.json` ([1e7c738](https://github.com/wxt-dev/wxt/commit/1e7c738))
 - Automatically add CSS files to content scripts ([047ce04](https://github.com/wxt-dev/wxt/commit/047ce04))
 - Download and bundle remote URL imports ([523c7df](https://github.com/wxt-dev/wxt/commit/523c7df))
 - Generate type declarations and config for project types and auto-imports ([21debad](https://github.com/wxt-dev/wxt/commit/21debad))

CONTRIBUTING.md

@@ -57,9 +57,17 @@ pnpm test
 pnpm docs:dev
 ```
 
+## Updating Docs
+
+Documentation is written with VitePress, and is located in the `docs/` directory.
+
+The API reference is generated from JSDoc comments in the source code. If there's a typo or change you want to make in there, you'll need to update the source code instead of a file in the `docs/` directory.
+
 ## Testing
 
-WXT has unit and E2E tests. When making a change or adding a feature, make sure to update the tests or add new ones.
+WXT has unit and E2E tests. When making a change or adding a feature, make sure to update the tests or add new ones, if they exist.
+
+> If they don't exist, feel free to create them, but that's a lot for a one-time contributor. A maintainer might add them to your PR though.
 
 To run tests for a specific file, add the filename at the end of the test command:
 
@@ -100,7 +108,7 @@ Then run `npm i` again.
 To add a template, copy the vanilla template and give it a new name.
 
 ```sh
-cp -r templates/vailla templates/<new-template-name>
+cp -r templates/vanilla templates/<new-template-name>
 ```
 
 That's it. Once your template is merged, it will be available inside `wxt init` immediately. You don't need to release a new version of WXT to release a new template.

README.md

@@ -55,14 +55,11 @@ Or see the [installation guide](https://wxt.dev/guide/installation.html) to get
 - 📂 File based entrypoints
 - 🚔 TypeScript
 - 🦾 Auto-imports
-- ⬇️ Download and bundle remote URL imports
+- 🤖 Automated publishing
 - 🎨 Frontend framework agnostic: works with Vue, React, Svelte, etc
 - 🖍️ Quickly bootstrap a new project
 - 📏 Bundle analysis
-
-### Coming Soon
-
-- 🤖 Automated publishing
+- ⬇️ Download and bundle remote URL imports
 
 ## Contributors
 

bin/wxt-publish-extension.cjs

@@ -0,0 +1,7 @@
+#!/usr/bin/env node
+/**
+ * A alias around `publish-extension` that is always installed on the path without having to install
+ * `publish-browser-extension` as a direct dependency (like for PNPM, which doesn't link
+ * sub-dependency binaries to "node_modules/.bin")
+ */
+require('publish-browser-extension/cli');

demo/package.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "vitest": "^1.1.0"
+    "vitest": "^1.2.2"
   },
   "devDependencies": {
     "@types/react": "^18.2.34",

demo/src/entrypoints/background.ts

@@ -1,37 +1,42 @@
 import messages from 'public/_locales/en/messages.json';
 
-export default defineBackground(() => {
-  console.log(browser.runtime.id);
-  logId();
-  console.log({
-    browser: __BROWSER__,
-    chrome: __IS_CHROME__,
-    firefox: __IS_FIREFOX__,
-    manifestVersion: __MANIFEST_VERSION__,
-    messages,
-  });
+export default defineBackground({
+  // type: 'module',
 
-  // @ts-expect-error: should only accept entrypoints or public assets
-  browser.runtime.getURL('/');
-  browser.runtime.getURL('/background.js');
-  browser.runtime.getURL('/icon/128.png');
-  browser.runtime.getURL('/example.html#hash');
-  browser.runtime.getURL('/example.html?query=param');
-  // @ts-expect-error: should only allow hashes/query params on HTML files
-  browser.runtime.getURL('/icon-128.png?query=param');
+  main() {
+    console.log(browser.runtime.id);
+    logId();
+    console.log({
+      url: import.meta.url,
+      browser: import.meta.env.BROWSER,
+      chrome: import.meta.env.CHROME,
+      firefox: import.meta.env.FIREFOX,
+      manifestVersion: import.meta.env.MANIFEST_VERSION,
+      messages,
+    });
 
-  // @ts-expect-error: should only accept known message names
-  browser.i18n.getMessage('test');
-  browser.i18n.getMessage('prompt_for_name');
-  browser.i18n.getMessage('hello', 'Aaron');
-  browser.i18n.getMessage('bye', ['Aaron']);
-  browser.i18n.getMessage('@@extension_id');
+    // @ts-expect-error: should only accept entrypoints or public assets
+    browser.runtime.getURL('/');
+    browser.runtime.getURL('/background.js');
+    browser.runtime.getURL('/icon/128.png');
+    browser.runtime.getURL('/example.html#hash');
+    browser.runtime.getURL('/example.html?query=param');
+    // @ts-expect-error: should only allow hashes/query params on HTML files
+    browser.runtime.getURL('/icon-128.png?query=param');
 
-  console.log('WXT MODE:', {
-    MODE: import.meta.env.MODE,
-    DEV: import.meta.env.DEV,
-    PROD: import.meta.env.PROD,
-  });
+    // @ts-expect-error: should only accept known message names
+    browser.i18n.getMessage('test');
+    browser.i18n.getMessage('prompt_for_name');
+    browser.i18n.getMessage('hello', 'Aaron');
+    browser.i18n.getMessage('bye', ['Aaron']);
+    browser.i18n.getMessage('@@extension_id');
 
-  storage.setItem('session:startTime', Date.now());
+    console.log('WXT MODE:', {
+      MODE: import.meta.env.MODE,
+      DEV: import.meta.env.DEV,
+      PROD: import.meta.env.PROD,
+    });
+
+    storage.setItem('session:startTime', Date.now());
+  },
 });

demo/wxt.config.ts

@@ -15,4 +15,7 @@ export default defineConfig({
   alias: {
     public: 'src/public',
   },
+  zip: {
+    downloadPackages: ['sass'],
+  },
 });

docs/.vitepress/components/UsingWxtSection.vue

@@ -17,13 +17,17 @@ const chromeExtensionIds = [
   'okifoaikfmpfcamplcfjkpdnhfodpkil', // Doozy: Ai Made Easy
   'lknmjhcajhfbbglglccadlfdjbaiifig', // tl;dv - Record, Transcribe & ChatGPT for Google Meet
   'youtube中文配音/oglffgiaiekgeicdgkdlnlkhliajdlja', // Youtube中文配音
+  'agjnjboanicjcpenljmaaigopkgdnihi', // PreMiD
+  'aiakblgmlabokilgljkglggnpflljdgp', // Markdown Sticky Notes
+  'nomnkbngkijpffepcgbbofhcnafpkiep', // DocVersionRedirector
 ];
 
-const { data } = useListExtensionDetails(chromeExtensionIds);
+const { data, err, isLoading } = useListExtensionDetails(chromeExtensionIds);
 const sortedExtensions = computed(() => {
   if (!data.value?.length) return [];
 
   return [...data.value]
+    .filter((item) => item != null)
     .map((item) => ({
       ...item,
       // Sort based on the user count weighted by the rating
@@ -48,7 +52,16 @@ function getStoreUrl(extension: ChromeExtension) {
         Battle tested and ready for production. Explore chrome extensions made
         with WXT.
       </p>
-      <ul>
+      <p v-if="isLoading" style="text-align: center; opacity: 50%">
+        Loading...
+      </p>
+      <p
+        v-else-if="err || sortedExtensions.length === 0"
+        style="text-align: center; opacity: 50%"
+      >
+        Failed to load extension details.
+      </p>
+      <ul v-else>
         <li
           v-for="extension of sortedExtensions"
           :key="extension.id"

docs/.vitepress/composables/useListExtensionDetails.ts

@@ -26,6 +26,7 @@ const query = `query ${operationName}($ids:[String!]!) {
 export default function (ids: string[]) {
   const data = ref<ChromeExtension[]>();
   const err = ref<unknown>();
+  const isLoading = ref(true);
 
   fetch('https://queue.wxt.dev/api', {
     method: 'POST',
@@ -36,6 +37,7 @@ export default function (ids: string[]) {
     }),
   })
     .then(async (res) => {
+      isLoading.value = false;
       const {
         data: { chromeExtensions },
       } = await res.json();
@@ -43,6 +45,7 @@ export default function (ids: string[]) {
       err.value = undefined;
     })
     .catch((error) => {
+      isLoading.value = false;
       console.error(error);
       data.value = undefined;
       err.value = error;
@@ -51,5 +54,6 @@ export default function (ids: string[]) {
   return {
     data,
     err,
+    isLoading,
   };
 }

docs/.vitepress/config.ts

@@ -19,7 +19,7 @@ const title = 'Next-gen Web Extension Framework';
 const titleSuffix = ' – WXT';
 
 const description =
-  "WXT provides the best developer experience, making it quick, easy, and fun to develop chrome extensions for all browsers. With built-in utilties for building, zipping, and publishing your extension, it's easy to get started.";
+  "WXT provides the best developer experience, making it quick, easy, and fun to develop chrome extensions for all browsers. With built-in utilities for building, zipping, and publishing your extension, it's easy to get started.";
 const ogTitle = `${title}${titleSuffix}`;
 const ogUrl = 'https://wxt.dev';
 const ogImage = 'https://wxt.dev/social-preview.png';
@@ -90,6 +90,7 @@ export default defineConfig({
             { text: 'Assets', link: '/guide/assets.md' },
             { text: 'Content Script UI', link: '/guide/content-script-ui.md' },
             { text: 'Multiple Browsers', link: '/guide/multiple-browsers.md' },
+            { text: 'ES Modules', link: '/guide/esm.md' },
             { text: 'Auto-imports', link: '/guide/auto-imports.md' },
             { text: 'Vite', link: '/guide/vite.md' },
             { text: 'Remote Code', link: '/guide/remote-code.md' },
@@ -123,7 +124,7 @@ export default defineConfig({
             { text: 'Options', link: '/entrypoints/options.md' },
             { text: 'Popup', link: '/entrypoints/popup.md' },
             { text: 'Sandbox', link: '/entrypoints/sandbox.md' },
-            { text: 'Sidepanel', link: '/entrypoints/sidepanel.md' },
+            { text: 'Side Panel', link: '/entrypoints/sidepanel.md' },
             { text: 'Unlisted Pages', link: '/entrypoints/unlisted-pages.md' },
             {
               text: 'Unlisted Scripts',

docs/.vitepress/plugins/generate-cli-docs.ts

@@ -32,14 +32,20 @@ export function generateCliDocs() {
         '```',
       ];
 
-      const commands = await Promise.all(
+      const commands = await Promise.allSettled(
         extractCommands(dev.info).map(async (command) => {
           const res = await execaCommand(`pnpm -s wxt ${command} --help`);
           const { rest: docs } = splitInfo(res.stdout);
           return [`## \`wxt ${command}\``, '```sh', docs, '```'];
         }),
       );
-      lines.push(...commands);
+      lines.push(
+        ...commands
+          .filter((res) => res.status === 'fulfilled')
+          .map(
+            (res) => (res as unknown as PromiseFulfilledResult<string>).value,
+          ),
+      );
 
       const text = await format(
         PREFACE +

docs/entrypoints/background.md

@@ -16,7 +16,7 @@ For MV2, the background is added as a script to the background page. For MV3, th
 ## Definition
 
 :::warning
-The main function of the background **_CANNOT BE ASYNC_**. Event listeners must be added syncronously on background startup. If your main function returns a promise, WXT will log an error.
+The main function of the background **_CANNOT BE ASYNC_**. Event listeners must be added synchronously on background startup. If your main function returns a promise, WXT will log an error.
 :::
 
 ```ts

docs/entrypoints/content-scripts.md

@@ -37,6 +37,9 @@ export default defineContentScript({
   // Configure how CSS is injected onto the page
   cssInjectionMode: undefined | "manifest" | "manual" | "ui",
 
+  // Configure how/when content script will be registered
+  registration: undefined | "manifest" | "runtime",
+
   main(ctx) {
     // Executed when content script is loaded
   },
@@ -49,9 +52,11 @@ When defining multiple content scripts, content script entrypoints that have the
 
 ## Context
 
-Old content scripts are not automatically stopped when an extension updates and reloads. Often, this leads to "Invalidated context" errors in production when a content script from an old version of your extension tries to use a extension API.
+Old content scripts are not automatically stopped when an extension updates and reloads. Often, this leads to "Invalidated context" errors in production when a content script from an old version of your extension tries to use a web extension API (ie, the `browser` or `chrome` globals).
 
-WXT provides a utility for managing this process: `ContentScriptContext`. An instance of this class is provided to you automatically inside the `main` function of your content script.
+WXT provides a utility for handling this process: `ContentScriptContext`. An instance of this class is provided to you automatically inside the `main` function of your content script.
+
+When your extension updates or is uninstalled, the context will become invalidated, and will trigger any `ctx.onInvalidated` listeners you add:
 
 ```ts
 export default defineContentScript({
@@ -62,26 +67,33 @@ export default defineContentScript({
       // ...
     });
 
-    // Stop fetch requests
-    fetch('...url', { signal: ctx.signal });
-
-    // Timeout utilities
+    // Timeout utilities that are automatically cleared when invalidated
     ctx.setTimeout(() => {
       // ...
     }, 5e3);
     ctx.setInterval(() => {
       // ...
     }, 60e3);
+
+    // Or add event listeners that get removed when invalidated
+    ctx.addEventListener(document, 'visibilitychange', (event) => {
+      // ...
+    });
+
+    // You can also stop fetch requests
+    fetch('...url', { signal: ctx.signal });
   },
 });
 ```
 
 The class extends [`AbortController`](https://developer.mozilla.org/en-US/docs/Web/API/AbortController) and provides other utilities for stopping a content script's logic once it becomes invalidated.
 
-:::tip
+:::warning
 When working with content scripts, **you should always use the `ctx` object to stop any async or future work.**
 
 This prevents old content scripts from interfering with new content scripts, and prevents error messages from the console in production.
+
+If you're using a framework like React, Vue, Svelte, etc., make sure you're unmounting your UI properly in the `onRemove` option of [`createShadowRootUi`](https://wxt.dev/guide/content-script-ui.html#shadow-root).
 :::
 
 ## CSS

docs/entrypoints/css.md

@@ -2,7 +2,7 @@
 
 WXT can build CSS entrypoints individually. CSS entrypoints are always unlisted.
 
-See [Content Script CSS](/entrypoints/content-scripts#css) documentation for the recomended approach to include CSS with a content script.
+See [Content Script CSS](/entrypoints/content-scripts#css) documentation for the recommended approach to include CSS with a content script.
 
 :::info
 If the recommended approach doesn't work for your use case, you can use any of the filename patterns below to build the styles separate from the JS and use the [`transformManifest` hook](/api/wxt/interfaces/InlineConfig#transformmanifest) to manually add your CSS file to the manifest.

docs/entrypoints/sidepanel.md

@@ -2,8 +2,10 @@
 
 [Chrome Docs](https://developer.chrome.com/docs/extensions/reference/sidePanel/) • [Firefox Docs](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/user_interface/Sidebars)
 
+In Chrome, side panels use the "side_panel" API, while Firefox uses the "sidebar_action" API.
+
 :::warning
-Chrome added support for sidepanels in Manifest V3, they are not available in Manfiest V2.
+Chrome added support for sidepanels in Manifest V3, they are not available in Manifest V2.
 :::
 
 ## Filenames
@@ -25,7 +27,17 @@ Chrome added support for sidepanels in Manifest V3, they are not available in Ma
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Title</title>
+    <title>Default Side Panel Title</title>
+    <meta
+      name="manifest.default_icon"
+      content="{
+        16: '/icon-16.png',
+        24: '/icon-24.png',
+        ...
+      }"
+    />
+    <meta name="manifest.open_at_install" content="true|false" />
+    <meta name="manifest.browser_style" content="true|false" />
     <!-- Set include/exclude if the page should be removed from some builds -->
     <meta name="manifest.include" content="['chrome', ...]" />
     <meta name="manifest.exclude" content="['chrome', ...]" />

docs/guide/auto-imports.md

@@ -65,7 +65,7 @@ import { defineConfig } from 'wxt';
 
 export default defineConfig({
   imports: {
-    // Add auto-imports for vue fuctions like createApp, ref, computed, watch, toRaw, etc...
+    // Add auto-imports for vue functions like createApp, ref, computed, watch, toRaw, etc...
     presets: ['vue'],
   },
 });

docs/guide/compare.md

@@ -1,46 +1,47 @@
 # Compare
 
-Lets compare the features of WXT vs [Plasmo](https://docs.plasmo.com/framework), another web extension framework.
+Lets compare the features of WXT vs [Plasmo](https://docs.plasmo.com/framework) (another web extension framework) and [CRXJS](https://crxjs.dev/vite-plugin) (the most popular bundler plugin).
 
 ## Overview
 
-| Features                                             |             WXT             |                  Plasmo                  |
-| ---------------------------------------------------- | :-------------------------: | :--------------------------------------: |
-| Supports all browsers                                |             ✅              |                    ✅                    |
-| MV2 Support                                          |             ✅              |                    ✅                    |
-| MV3 Support                                          |             ✅              |                    ✅                    |
-| Create Extension ZIPs                                |             ✅              |                    ✅                    |
-| Create Firefox Sources ZIP                           |             ✅              |                    ❌                    |
-| First-class TypeScript support                       |             ✅              |                    ✅                    |
-| File based entrypoint discovery                      |             ✅              |                    ✅                    |
-| Inline entrypoint config                             |             ✅              |                    ✅                    |
-| Auto-imports                                         |             ✅              |                    ❌                    |
-| Supports all frontend frameworks                     |             ✅              |      🟡 Only React, Vue, and Svelte      |
-| Framework specific entrypoints (like `Popup.tsx`)    |   🟡 `.html` `.ts` `.tsx`   | ✅ `.html` `.ts` `.tsx` `.vue` `.svelte` |
-| Automated publishing                                 |       🟡 Coming soon        |                    ✅                    |
-| Remote Code Bundling (Google Analytics)              |             ✅              |                    ✅                    |
+| Features                                             |             WXT             |                  Plasmo                  |                                  CRXJS                                  |
+| ---------------------------------------------------- | :-------------------------: | :--------------------------------------: | :---------------------------------------------------------------------: |
+| Supports all browsers                                |             ✅              |                    ✅                    | ❌ See [#56](https://github.com/crxjs/chrome-extension-tools/issues/56) |
+| MV2 Support                                          |             ✅              |                    ✅                    |                          🟡 Either MV2 or MV3                           |
+| MV3 Support                                          |             ✅              |                    ✅                    |                          🟡 Either MV2 or MV3                           |
+| Create Extension ZIPs                                |             ✅              |                    ✅                    |                                   ❌                                    |
+| Create Firefox Sources ZIP                           |             ✅              |                    ❌                    |                                   ❌                                    |
+| First-class TypeScript support                       |             ✅              |                    ✅                    |                                   ✅                                    |
+| Entrypoint discovery                                 |         File based          |                File based                |                                   ❌                                    |
+| Inline entrypoint config                             |             ✅              |                    ✅                    |                             Manifest based                              |
+| Auto-imports                                         |             ✅              |                    ❌                    |                                   ❌                                    |
+| Supports all frontend frameworks                     |             ✅              |      🟡 Only React, Vue, and Svelte      |                                   ✅                                    |
+| Framework specific entrypoints (like `Popup.tsx`)    |   🟡 `.html` `.ts` `.tsx`   | ✅ `.html` `.ts` `.tsx` `.vue` `.svelte` |                                   ❌                                    |
+| Automated publishing                                 |             ✅              |                    ✅                    |                                   ❌                                    |
+| Remote Code Bundling (Google Analytics)              |             ✅              |                    ✅                    |                                   ❌                                    |
 | <strong style="opacity: 50%">Dev Mode</strong>       |                             |                                          |
-| `.env` Files                                         |             ✅              |                    ✅                    |
-| Opens browser and install extension                  |             ✅              |                    ❌                    |
-| HMR for UIs                                          |             ✅              |              🟡 React only               |
-| Reload HTML Files on Change                          |             ✅              |       🟡 Reloads entire extension        |
-| Reload Content Scripts on Change                     |             ✅              |       🟡 Reloads entire extension        |
-| Reload Background on Change                          | 🟡 Reloads entire extension |       🟡 Reloads entire extension        |
-| <strong style="opacity: 50%">Built-in Utils</strong> |                             |                                          |
-| Storage                                              |             ✅              |                    ✅                    |
-| Messaging                                            |       🟡 Coming soon        |                    ✅                    |
-| Content Script UI                                    |             ✅              |                    ✅                    |
+| `.env` Files                                         |             ✅              |                    ✅                    |                                   ✅                                    |
+| Opens browser and install extension                  |             ✅              |                    ❌                    |                                   ❌                                    |
+| HMR for UIs                                          |             ✅              |              🟡 React only               |                                   ✅                                    |
+| Reload HTML Files on Change                          |             ✅              |       🟡 Reloads entire extension        |                                   ✅                                    |
+| Reload Content Scripts on Change                     |             ✅              |       🟡 Reloads entire extension        |                                   ✅                                    |
+| Reload Background on Change                          | 🟡 Reloads entire extension |       🟡 Reloads entire extension        |                       🟡 Reloads entire extension                       |
+| Respects Content Script `run_at`                     |             ✅              |                    ✅                    |                 ❌ ESM-style loaders run asynchronously                 |
+| <strong style="opacity: 50%">Built-in Utils</strong> |                             |                                          |                                                                         |
+| Storage                                              |             ✅              |                    ✅                    |                                   ❌                                    |
+| Messaging                                            |             ❌              |                    ✅                    |                                   ❌                                    |
+| Content Script UI                                    |             ✅              |                    ✅                    |                                   ❌                                    |
 
-## Dev Mode
+## Why use WXT?
 
-WXT's main goal is improving the development experience (DX) of creating web extensions. There are two things WXT does differently:
+WXT's main goal is improving the development experience (DX) of creating web extensions, while not sacrificing support. There are two things WXT does differently:
 
 1. Automatically opens a browser with the extension installed when starting development
 2. Reload each part of the extension individually rather than reloading the entire extension
 
 Opening a browser automatically makes it super easy to start and stop development without having to manually load the extension in your browser.
 
-Reloading each part of the extension individually improves your iteration speed while developing UIs. This is because reloading the entire extension on every change will close the popup and any tabs open to an extension page, like options. If you save a file associated with a UI and a content script while working on the UI, it will randomly close because it needed to reload the extension when the content script changed. This interupts your development flow and is really annoying.
+Reloading each part of the extension individually improves your iteration speed while developing UIs. This is because reloading the entire extension on every change will close the popup and any tabs open to an extension page, like options. If you save a file associated with a UI and a content script while working on the UI, it will randomly close because it needed to reload the extension when the content script changed. This interrupts your development flow and is really annoying.
 
 WXT solves this problem by reloading HTML pages and content scripts individually (when possible) to keep your UIs open while you develop them. This is a MV3 feature, so if you're developing a MV2 extension, you'll get the same dev experience as Plasmo.
 

docs/guide/configuration.md

@@ -1,6 +1,6 @@
 # Configuration
 
-WXT's behavior can be configured via the `wxt.config.ts` file. In this file, you can add Vite plugins, change the directory strucutre of your project, and set fields on your `manifest.json`.
+WXT's behavior can be configured via the `wxt.config.ts` file. In this file, you can add Vite plugins, change the directory structure of your project, and set fields on your `manifest.json`.
 
 ## Config File
 

docs/guide/content-script-ui.md

@@ -21,10 +21,11 @@ Integrated content script UIs are injected alongside the content of a page. This
 ```ts [Vanilla]
 // entrypoints/example-ui.content.ts
 export default defineContentScript({
+  matches: ['<all_urls>'],
+
   main(ctx) {
     const ui = createIntegratedUi(ctx, {
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
         // Append children to the container
         const app = document.createElement('p');
@@ -45,10 +46,11 @@ import { createApp } from 'vue';
 import App from './App.vue';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
+
   main(ctx) {
     const ui = createIntegratedUi(ctx, {
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
         // Create the app and mount it to the UI container
         const app = createApp(App);
@@ -73,10 +75,11 @@ import ReactDOM from 'react-dom/client';
 import App from './App.tsx';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
+
   main(ctx) {
     const ui = createIntegratedUi(ctx, {
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
         // Create a root on the UI container and render a component
         const root = ReactDOM.createRoot(container);
@@ -100,10 +103,11 @@ export default defineContentScript({
 import App from './App.svelte';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
+
   main(ctx) {
     const ui = createIntegratedUi(ctx, {
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
         // Create the Svelte app inside the UI container
         const app = new App({
@@ -128,10 +132,11 @@ export default defineContentScript({
 import { render } from 'solid-js/web';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
+
   main(ctx) {
     const ui = createIntegratedUi(ctx, {
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
         // Render your app to the UI container
         const unmount = render(() => <div>...</div>, container);
@@ -152,7 +157,7 @@ export default defineContentScript({
 
 See the [API Reference](/api/wxt/client/functions/createIntegratedUi) for the complete list of options.
 
-You can control how CSS is injected for an integrated content script UI with the [`cssInjectionMode`](/api/wxt/interfaces/ContentScriptBaseDefinition#cssinjectionmode) property. Usually, you'll want to leave it as `"manifest"`, the default, so the UI inherits its style from the website's CSS.
+You can control how CSS is injected for an integrated content script UI with the [`cssInjectionMode`](/api/wxt/interfaces/BaseContentScriptEntrypointOptions#cssinjectionmode) property. Usually, you'll want to leave it as `"manifest"`, the default, so the UI inherits its style from the website's CSS.
 
 ## Shadow Root
 
@@ -163,7 +168,7 @@ WXT's [`createShadowRootUi`](/api/wxt/client/functions/createShadowRootUi) abstr
 To use `createShadowRootUi`, follow these steps:
 
 1. Import your CSS file at the top of your content script
-2. Set [`cssInjectionMode: "ui"`](/api/wxt/interfaces/ContentScriptBaseDefinition#cssinjectionmode) inside `defineContentScript`
+2. Set [`cssInjectionMode: "ui"`](/api/wxt/interfaces/BaseContentScriptEntrypointOptions#cssinjectionmode) inside `defineContentScript`
 3. Define your UI with `createShadowRootUi()`
 4. Mount the UI so it is visible to users
 
@@ -174,6 +179,7 @@ To use `createShadowRootUi`, follow these steps:
 import './style.css';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
   // 2. Set cssInjectionMode
   cssInjectionMode: 'ui',
 
@@ -181,8 +187,7 @@ export default defineContentScript({
     // 3. Define your UI
     const ui = await createShadowRootUi(ctx, {
       name: 'example-ui',
-      anchor: '#anchor',
-      type: 'inline',
+      position: 'inline',
       onMount(container) {
         // Define how your UI will be mounted inside the container
         const app = document.createElement('p');
@@ -204,6 +209,7 @@ import { createApp } from 'vue';
 import App from './App.vue';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
   // 2. Set cssInjectionMode
   cssInjectionMode: 'ui',
 
@@ -211,8 +217,7 @@ export default defineContentScript({
     // 3. Define your UI
     const ui = await createShadowRootUi(ctx, {
       name: 'example-ui',
-      anchor: '#anchor',
-      type: 'inline',
+      position: 'inline',
       onMount: (container) => {
         // Define how your UI will be mounted inside the container
         const app = createApp(App);
@@ -221,7 +226,7 @@ export default defineContentScript({
       },
       onRemove: (app) => {
         // Unmount the app when the UI is removed
-        app.unmount();
+        app?.unmount();
       },
     });
 
@@ -238,24 +243,28 @@ import ReactDOM from 'react-dom/client';
 import App from './App.tsx';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
   // 2. Set cssInjectionMode
   cssInjectionMode: 'ui',
 
-  main(ctx) {
+  async main(ctx) {
     // 3. Define your UI
-    const ui = createShadowRootUi(ctx, {
+    const ui = await createShadowRootUi(ctx, {
       name: 'example-ui',
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
+        // Container is a body, and React warns when creating a root on the body, so create a wrapper div
+        const app = document.createElement('div');
+        container.append(app);
+
         // Create a root on the UI container and render a component
-        const root = ReactDOM.createRoot(container);
+        const root = ReactDOM.createRoot(app);
         root.render(<App />);
         return root;
       },
       onRemove: (root) => {
         // Unmount the root when the UI is removed
-        root.unmount();
+        root?.unmount();
       },
     });
 
@@ -271,15 +280,15 @@ import './style.css';
 import App from './App.svelte';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
   // 2. Set cssInjectionMode
   cssInjectionMode: 'ui',
 
-  main(ctx) {
+  async main(ctx) {
     // 3. Define your UI
-    const ui = createShadowRootUi(ctx, {
+    const ui = await createShadowRootUi(ctx, {
       name: 'example-ui',
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
         // Create the Svelte app inside the UI container
         const app = new App({
@@ -289,7 +298,7 @@ export default defineContentScript({
       },
       onRemove: (app) => {
         // Destroy the app when the UI is removed
-        app.$destroy();
+        app?.$destroy();
       },
     });
 
@@ -305,22 +314,22 @@ import './style.css';
 import { render } from 'solid-js/web';
 
 export default defineContentScript({
+  matches: ['<all_urls>'],
   // 2. Set cssInjectionMode
   cssInjectionMode: 'ui',
 
-  main(ctx) {
+  async main(ctx) {
     // 3. Define your UI
-    const ui = createShadowRootUi(ctx, {
+    const ui = await createShadowRootUi(ctx, {
       name: 'example-ui',
       position: 'inline',
-      anchor: '#anchor',
       onMount: (container) => {
         // Render your app to the UI container
         const unmount = render(() => <div>...</div>, container);
       },
       onRemove: (unmount) => {
         // Unmount the app when the UI is removed
-        unmount();
+        unmount?.();
       },
     });
 
@@ -359,7 +368,7 @@ WXT provides a helper function, [`createIframeUi`](/api/wxt/client/functions/cre
      </body>
    </html>
    ```
-1. Add the page to the manifest's `web_accessible_resouces`
+1. Add the page to the manifest's `web_accessible_resources`
    ```ts
    // wxt.config.ts
    export default defineConfig({
@@ -377,13 +386,13 @@ WXT provides a helper function, [`createIframeUi`](/api/wxt/client/functions/cre
 
    ```ts
    export default defineContentScript({
-     // ...
+     matches: ['<all_urls>'],
+
      async main(ctx) {
        // Define the UI
        const ui = await createIframeUi(ctx, {
          page: '/example-iframe.html',
-         anchor: '#anchor',
-         type: 'inline',
+         position: 'inline',
          onMount: (wrapper, iframe) => {
            // Add styles to the iframe like width
            iframe.width = 123;

docs/guide/development.md

@@ -13,6 +13,24 @@ WXT's main goal is providing the best DX it possibly can. When running your exte
 | `wxt.config.ts`     |     |                       |                  | 🟡 See [#10](https://github.com/wxt-dev/wxt/issues/10) |
 | `web-ext.config.ts` |     |                       |                  | 🟡 See [#10](https://github.com/wxt-dev/wxt/issues/10) |
 
+## Dev Mode vs Production Builds
+
+There are some notable differences between the development and production versions of an extension. During development:
+
+1. **Content scripts are not listed in the `manifest.json`** when targeting MV3. Instead, the [`scripting`](https://developer.chrome.com/docs/extensions/reference/api/scripting) permission is used to register content scripts at runtime so they can be reloaded individually.
+
+   To get the list of content scripts during development, run the following in the background's console:
+
+   ```ts
+   await chrome.scripting.getRegisteredContentScripts();
+   ```
+
+2. **The CSP is modified to allow loading scripts from the dev server**. Make sure you're using Chrome v110 or above for HMR to work.
+
+3. If you don't include a background script/service worker, one will be created to perform various tasks in dev mode, mostly related to reloading different parts of the extension on change.
+
+For production builds, none of the above modifications will be applied, and you're extension/manifest will only include what you have defined.
+
 ## Configure Browser Startup
 
 WXT uses [`web-ext` by Mozilla](https://github.com/mozilla/web-ext) to automatically open a browser with the extension installed. You can configure the runner's behavior via the [`runner`](/api/wxt/interfaces/InlineConfig#runner) option, or in a separate gitignored file, `web-ext.config.ts`.
@@ -41,7 +59,7 @@ export default defineRunnerConfig({
 
 ### Browser Binaries
 
-`web-ext`'s browser discovery is very limitted. By default, it only guesses at where Chrome and Firefox are installed. If you've customized your install locations, you may need to tell `web-ext` where the binaries/executables are located using the [`binaries` option](/api/wxt/interfaces/ExtensionRunnerConfig#binaries). For other Chromium based browsers, like Edge or Opera, you'll need to explicitly list them in the `binaries` option as well, otherwise they will open in Chrome by default.
+`web-ext`'s browser discovery is very limited. By default, it only guesses at where Chrome and Firefox are installed. If you've customized your install locations, you may need to tell `web-ext` where the binaries/executables are located using the [`binaries` option](/api/wxt/interfaces/ExtensionRunnerConfig#binaries). For other Chromium based browsers, like Edge or Opera, you'll need to explicitly list them in the `binaries` option as well, otherwise they will open in Chrome by default.
 
 ```ts
 // ~/web-ext.config.ts
@@ -83,6 +101,6 @@ Normally, to manually reload an extension, you have to visit `chrome://extension
 
 When running `wxt` command to start the dev server, WXT adds a keyboard shortcut, `ctrl+E` for Windows/Linux and `cmd+E` for Mac, that reloads the extension when pressed, without visiting `chrome://extensions`.
 
-:::note
+:::info
 This shortcut is only available during development, and is not be added to your extension when running `wxt build` or `wxt-zip`.
 :::

docs/guide/entrypoints.md

@@ -58,7 +58,7 @@ See [`/entrypoints` folder](/entrypoints/background) documentation for a full li
 
 ## Entrypoint Options
 
-Some entrypoints, like content scripts, actions, or the background, can recieve additional options.
+Some entrypoints, like content scripts, actions, or the background, can receive additional options.
 
 In HTML files, options are listed as `meta` tags:
 
@@ -114,11 +114,11 @@ WXT 0.14.1
 [8:55:54 AM]  ERROR  entrypoints/content.ts: Cannot use imported variable "GOOGLE_MATCHES" before main function. See https://wxt.dev/guide/entrypoints.html#side-effects
 ```
 
-This throws an error because WXT needs to import each entrypoint during the build process to extract its definition (containing the `match`, `run_at`, `include`/`exclude`, etc.) to render the `manifest.json` correctly. Before loading an entrypoint, a transformation is applied to remove all imports. This prevents imported modules (local or NPM) with side-effects from running during the build process, potentially throwing an error.
+This throws an error because WXT needs to import each entrypoint during the build process to extract its definition (containing the `match`, `runAt`, `include`/`exclude`, etc.) to render the `manifest.json` correctly. Before loading an entrypoint, a transformation is applied to remove all imports. This prevents imported modules (local or NPM) with side-effects from running during the build process, potentially throwing an error.
 
 :::details Why?
 
-When importing your entrypoint to get its definition, the file is imported in a **_node environement_**, and doesn't have access to the `window`, `chrome`, or `browser` globals a web extension ususally has access to. If WXT doesn't remove all the imports from the file, the imported modules could try and access one of these variables, throwing an error.
+When importing your entrypoint to get its definition, the file is imported in a **_node environment_**, and doesn't have access to the `window`, `chrome`, or `browser` globals a web extension usually has access to. If WXT doesn't remove all the imports from the file, the imported modules could try and access one of these variables, throwing an error.
 
 :::
 
@@ -126,7 +126,7 @@ When importing your entrypoint to get its definition, the file is imported in a
 See [`wxt-dev/wxt#336`](https://github.com/wxt-dev/wxt/issues/336) to track the status of this bug.
 :::
 
-Usually, this error occurs when you try to extract options into a shared file or try to run code outside the `main` function. To fix the example from above, use litteral values when defining an entrypoint instead of importing them:
+Usually, this error occurs when you try to extract options into a shared file or try to run code outside the `main` function. To fix the example from above, use literal values when defining an entrypoint instead of importing them:
 
 ```ts
 import { GOOGLE_MATCHES } from '~/utils/match-patterns'; // [!code --]

docs/guide/esm.md

@@ -0,0 +1,38 @@
+# ES Modules
+
+Configure entrypoints to use ESM at runtime.
+
+Currently, ESM entrypoints are opt-in, so you must configure each entrypoint with that in mind.
+
+## HTML Pages <Badge type="warning" text="≥0.0.1" />
+
+In general, you should always make HTML pages import ESM scripts, unless you need to support old browsers.
+
+To make a script ESM, add `type="module"`:
+
+<!-- prettier-ignore -->
+```html
+<script src="./main.ts"></script> <!-- [!code --] -->
+<script src="./main.ts" type="module"></script> <!-- [!code ++] -->
+```
+
+## Background <Badge type="warning" text="≥0.16.0" />
+
+In your background script, set `type: "module"`:
+
+```ts
+export default defineBackground({
+  type: 'module', // !code ++
+  main() {
+    // ...
+  },
+});
+```
+
+:::warning
+Only MV3 support ESM background scripts/service workers. When targeting MV2, the `type` option is ignored and the background is always bundled into a single file as IIFE.
+:::
+
+## Content Scripts
+
+Coming soon. Follow [Content Script ESM Support #357](https://github.com/wxt-dev/wxt/issues/357) for updates.

docs/guide/extension-apis.md

@@ -57,21 +57,19 @@ Here's a basic request/response example:
 // popup/main.ts
 const res = await browser.runtime.sendMessage('ping');
 
-console.log('res'); // "pong"
+console.log(res); // "pong"
 ```
 
 ```ts
 // background.ts
 export default defineBackground(() => {
-  browser.runtime.onMessage.addEventListener(
-    (message, sender, sendResponse) => {
-      console.log(message); // "ping"
+  browser.runtime.onMessage.addListener((message, sender, sendResponse) => {
+    console.log(message); // "ping"
 
-      // Wait 1 second and respond with "pong"
-      setTimeout(() => sendResponse('pong'), 1000);
-      return true;
-    },
-  );
+    // Wait 1 second and respond with "pong"
+    setTimeout(() => sendResponse('pong'), 1000);
+    return true;
+  });
 });
 ```
 

docs/guide/installation.md

@@ -133,7 +133,7 @@ The dev command will build the extension for development, open the browser, and
 When running the dev command, WXT will make several changes to your `manifest.json` to improve your development experience:
 
 - If missing, add a background script/service worker to enable fast reloads
-- Add serveral `permissions` and `host_permissions` to enable HMR and fast reloads
+- Add several `permissions` and `host_permissions` to enable HMR and fast reloads
 - Modify the CSP to allow connections with the dev server
 - Remove `content_scripts` and register them at runtime so they can be easily reloaded when you save a file
 
@@ -145,5 +145,6 @@ If you're an experienced web extension developer and think the dev manifest look
 You're ready to build your web extension!
 
 - Learn how to [add entrypoints](./entrypoints) like the popup, options page, or content scripts
+- Configure your entrypoints to [use ESM](./esm) at runtime
 - [Configure WXT](./configuration) by creating a `wxt.config.ts` file
-- Checkout [example projects](https://github.com/wxt-dev/wxt-examples) to see how to perfom common tasks with WXT
+- Checkout [example projects](https://github.com/wxt-dev/wxt-examples) to see how to perform common tasks with WXT

docs/guide/introduction.md

@@ -7,7 +7,7 @@ head:
 
 # Introduction
 
-WXT is a free and open source framework for building web extensions in an conventional, intuative, and safe way **_for all browsers_**.
+WXT is a free and open source framework for building web extensions in an conventional, intuitive, and safe way **_for all browsers_**.
 
 WXT is based of [Nuxt](https://nuxt.com), and aims to provide the same great DX with TypeScript, auto-imports, and an opinionated project structure.
 
@@ -15,12 +15,12 @@ WXT is based of [Nuxt](https://nuxt.com), and aims to provide the same great DX
 
 ## Conventions
 
-WXT is an optionated framework. This helps keep projects consistent and easy to pick up.
+WXT is an opinionated framework. This helps keep projects consistent and easy to pick up.
 
 - **Generated manifest**: Based on your project's file structure
 - **Entrypoint configuration**: Configure entrypoints from the same file they're declare in
 - **Type-safety is a priority**: Out-of-the-box TypeScript support with improved browser API typing
-- **Simple output file structure**: Ouptut file paths minimize the path at runtime
+- **Simple output file structure**: Output file paths minimize the path at runtime
 
 ## Development
 

docs/guide/manifest.md

@@ -1,3 +1,7 @@
+---
+outline: deep
+---
+
 # Manifest.json
 
 The manifest.json is generated at build-time based on files in the `entrypoints/` directory and `wxt.config.ts`.
@@ -20,11 +24,11 @@ export default defineConfig({
 });
 ```
 
-## `name`
+### `name`
 
 If not provided via the `manifest` config, the [manifest's `name`](https://developer.chrome.com/docs/extensions/mv3/manifest/name/) defaults to your package.json's `name` property.
 
-## `version` and `version_name`
+### `version` and `version_name`
 
 The [manifest's `version` and `version_name`](https://developer.chrome.com/docs/extensions/mv3/manifest/version/) properties are based on the `version` field listed in your `package.json` or `wxt.config.ts`.
 
@@ -33,7 +37,7 @@ The [manifest's `version` and `version_name`](https://developer.chrome.com/docs/
 
 If a version is not found, a warning is logged and the version defaults to `"0.0.0"`.
 
-### Example
+#### Example
 
 ```json
 // package.json
@@ -50,7 +54,7 @@ If a version is not found, a warning is logged and the version defaults to `"0.0
 }
 ```
 
-## `icons`
+### `icons`
 
 By default, WXT will discover icons in your [`public` directory](/guide/assets#public-directory) and use them for the [manifest's `icons`](https://developer.chrome.com/docs/extensions/mv3/manifest/icons/).
 
@@ -83,7 +87,7 @@ export default defineConfig({
 });
 ```
 
-## `permissions`
+### `permissions`
 
 [Permissions](https://developer.chrome.com/docs/extensions/reference/permissions/) must be listed in the manifest config.
 
@@ -125,3 +129,109 @@ export default defineConfig({
 See the official localization examples for more details:
 
 <ExampleList tag="i18n" />
+
+## Per-Manifest Version Config
+
+WXT applies several transformations to your manifest to simplify managing both MV2 and MV3 keys in your `wxt.config.ts` file:
+
+1. Top level MV2-only or MV3-only keys are stripped from the final manifest when targeting the other manifest version
+2. Some keys, are automatically converted between versions when possible:
+   - Define `web_accessible_resources` in it's MV3 style and it will be converted to the MV2 style automatically
+   - `action` will automatically be converted to `browser_action` for MV3. To use `page_action` instead, add both `action` and `page_action` entries to your manifest
+
+For example, a `wxt.config.ts` file that looks like this:
+
+```ts
+import { defineConfig } from 'wxt';
+
+export default defineConfig({
+  mainfest: {
+    action: {
+      default_title: 'Some Title',
+    },
+    web_accessible_resources: [
+      {
+        matches: ['*://*.google.com/*'],
+        resources: ['icon/*.png'],
+      },
+    ],
+  },
+});
+```
+
+Will be output differently for each manifest version:
+
+:::code-group
+
+```json [MV2]
+{
+  "manifest_version": 2,
+  // ...
+  "browser_action": {
+    "default_title": "Some Title"
+  },
+  "web_accessible_resources": ["icon/*.png"]
+}
+```
+
+```json [MV3]
+{
+  "manifest_version": 3,
+  // ...
+  "action": {
+    "default_title": "Some Title"
+  },
+  "web_accessible_resources": [
+    {
+      "matches": ["*://*.google.com/*"],
+      "resources": ["icon/*.png"]
+    }
+  ]
+}
+```
+
+:::
+
+:::tip
+If this isn't enough control for your use-case, remember you can use a function for the `manifest` key and generate it however you'd like, or you can use the `build:manifestGenerated` hook to apply additional transformations.
+:::
+
+## Per-Browser Configuration
+
+The `manifest` field can be a function. If you are building and extension for multiple browsers, and need to modify the manifest per browser, using a function instead of an object is very useful.
+
+```ts
+export default defineConfig({
+  manifest: ({ browser, manifestVersion, mode, command }) => {
+    return {
+      // Your manifest
+    };
+  },
+});
+```
+
+:::info
+The first argument is of type `ConfigEnv`. See the [API reference](/api/wxt/interfaces/ConfigEnv) for info about each property.
+:::
+
+For example, say you use OAuth, and you need to provide a different `oauth.client_id` for each browser:
+
+```ts
+const clientIds = {
+  chrome: '<your-chrome-client-id>',
+  edge: '<your-edge-client-id>',
+  firefox: '<your-firefox-client-id>',
+  opera: '<your-opera-client-id>',
+};
+
+export default defineConfig({
+  manifest: ({ browser }) => ({
+    oauth: {
+      client_id: clientIds[browser],
+      scopes: [
+        // ...
+      ],
+    },
+  }),
+});
+```

docs/guide/migrate-to-wxt.md

@@ -32,7 +32,7 @@ Every project is different, so there's no one-solution-fits-all to migrating you
 
 ## Popular Tools/Frameworks
 
-Here's specific steps for other popuplar frameworks/build tools.
+Here's specific steps for other popular frameworks/build tools.
 
 ### `vite-plugin-web-extension`
 

docs/guide/multiple-browsers.md

@@ -1,6 +1,6 @@
 # Multiple Browsers
 
-You can build an extension for any combination of browser and manifest verison. Different browsers and manifest versions support different APIs and entrypoints, so be sure to check that your extension functions as expected for each target.
+You can build an extension for any combination of browser and manifest version. Different browsers and manifest versions support different APIs and entrypoints, so be sure to check that your extension functions as expected for each target.
 
 Separate build targets are written to their own output directories:
 
@@ -17,11 +17,9 @@ Separate build targets are written to their own output directories:
 
 To build for a specific browser, pass the `-b --browser` flag from the CLI:
 
-```
-
+```sh
 wxt --browser firefox
 wxt build --browser firefox
-
 ```
 
 By default, it will build for `chrome`. When excluding the [manifest version flags](#target-manifest-version), it will default to the commonly accepted manifest version for that browser.
@@ -47,7 +45,7 @@ wxt --mv2
 wxt build --mv2
 ```
 
-When the `-b --browser` flag is not passed, it defaults to `chrome`. So here, we're targetting MV2 for Chrome.
+When the `-b --browser` flag is not passed, it defaults to `chrome`. So here, we're targeting MV2 for Chrome.
 
 ## Customizing Entrypoints
 
@@ -112,3 +110,24 @@ export default defineContentScript({
 :::warning
 Only `defineBackground` and `defineContentScript` support per-browser options right now.
 :::
+
+## Runtime
+
+To determine the browser or manifest version at runtime, you can use any of the below variables:
+
+- `import.meta.env.BROWSER`: A string, the target browser, usually equal to the `--browser` flag
+- `import.meta.env.MANIFEST_VERSION`: A number, either `2` or `3`, depending on the manifest version targeted
+- `import.meta.env.CHROME`: A boolean equivalent to `import.meta.env.BROWSER === "chrome"`
+- `import.meta.env.FIREFOX`: A boolean equivalent to `import.meta.env.BROWSER === "firefox"`
+- `import.meta.env.EDGE`: A boolean equivalent to `import.meta.env.BROWSER === "edge"`
+- `import.meta.env.SAFARI`: A boolean equivalent to `import.meta.env.BROWSER === "safari"`
+- `import.meta.env.OPERA`: A boolean equivalent to `import.meta.env.BROWSER === "opera"`
+- `import.meta.env.COMMAND`: A string, `"serve"` when running `wxt` for development or `"build"` in all other cases.
+
+:::info
+These variables are constants defined at build time based on the build target. They do not actually detect which browser the code is running in.
+
+For example, if you build for `--browser chrome` and publish it on Edge, `import.meta.env.BROWSER` will be `"chrome"`, not `"edge"`. You have to build a separate ZIP for `--browser edge` before `import.meta.env.BROWSER` will be `"edge"`.
+
+If you need to know the actual browser your code is being ran on, you should use a [user agent parser](https://www.npmjs.com/package/ua-parser-js).
+:::

docs/guide/publishing.md

@@ -1,106 +1,80 @@
+---
+outline: deep
+---
+
 # Publishing
 
-WXT offers several utilities that simplify the publishing process.
+WXT will help you ZIP your extensions and submit them to the stores for review.
 
 ## First Time Publishing
 
-If you're publishing an extension to a store for the first time, you must manually navigate the process. Each store has unique steps and requirements that you need to familiarize yourself with.
+If you're publishing an extension to a store for the first time, you must manually navigate the process. WXT doesn't help you create listings, each store has unique steps and requirements that you need to familiarize yourself with.
 
-Each store requires that a ZIP file be uploaded. You can generate these using the `wxt zip` command:
+For specific details about each store, see the stores sections below.
+
+- [Chrome Web Store](#chrome-web-store)
+- [Firefox Addon Store](#firefox-addon-store)
+- [Edge Addons](#edge-addons)
+
+## Automation
+
+WXT provides two commands to help automate the release process:
+
+- `wxt submit`: Submit new versions of your extension for review (and publish them automatically once approved)
+- `wxt submit init`: Help setup all the required secrets and options for the `wxt submit` command
+
+To get started, run `wxt submit init` and follow the prompts. Once finished, you should have a `.env.submit` file! WXT will use this file to submit your updates.
+
+> In CI, make sure you add all the environment variables to the submit step.
+
+To release an update, build all the ZIPs you plan on releasing:
 
 ```sh
 wxt zip
 wxt zip -b firefox
-# etc
 ```
 
-Generated ZIP files are stored in the `.output` directory.
+Then run the `wxt submit` command, passing in all the ZIP files you want to release. In this case, we'll do a release for all 3 major stores: Chrome Web Store, Edge Addons, and Firefox Addons Store.
 
-## Automation
+If it's your first time running the command, you'll want to test your secrets by passing the `--dry-run` flag:
 
-To automate releasing updates, use the [`publish-browser-extension`](https://www.npmjs.com/package/publish-browser-extension) package.
+```sh
+wxt submit --dry-run \
+  --chrome-zip .output/<your-extension>-<version>-chrome.zip \
+  --firefox-zip .output/<your-extension>-<version>-firefox.zip --firefox-sources-zip .output/<your-extension>-<version>-sources.zip \
+  --edge-zip .output/<your-extension>-<version>-chrome.zip
+```
 
-:::info
-🚧 WXT plans to eventually incorporate the `publish-browser-extension` package into its own `wxt submit` command.
+If the dry run passes, remove the flag and do the actual release:
+
+```sh
+wxt submit \
+  --chrome-zip .output/<your-extension>-<version>-chrome.zip \
+  --firefox-zip .output/<your-extension>-<version>-firefox.zip --firefox-sources-zip .output/<your-extension>-<version>-sources.zip \
+  --edge-zip .output/<your-extension>-<version>-chrome.zip
+```
+
+:::tip
+If you only need to release to a single store, only pass that store's ZIP flag.
 :::
 
-1. Install the necessary dependencies:
-
-   ```sh
-   pnpm add -D publish-browser-extension env-cmd
-   ```
-
-2. Add scripts to your `package.json` file:
-
-   ```json
-   {
-     "scripts": {
-       "submit": "env-cmd -f .env.submit -- publish-extension",
-       "submit:dry": "env-cmd -f .env.submit -- publish-extension --dry-run"
-     }
-   }
-   ```
-
-3. Create a `.env.submit` file and include the code below. If you're not publishing to certain stores, simply ignore their respective variables.
-
-   ```txt
-   CHROME_EXTENSION_ID=""
-   CHROME_CLIENT_ID=""
-   CHROME_CLIENT_SECRET=""
-   CHROME_REFRESH_TOKEN=""
-
-   FIREFOX_EXTENSION_ID=""
-   FIREFOX_JWT_ISSUER=""
-   FIREFOX_JWT_SECRET=""
-
-   EDGE_PRODUCT_ID=""
-   EDGE_CLIENT_ID=""
-   EDGE_CLIENT_SECRET=""
-   EDGE_ACCESS_TOKEN_URL=""
-   ```
-
-   > Each value will be filled in during the next step.
-
-4. Run `npx publish-extension --help` for assistance with filling out all the values. Insert the obtained values within the double quotes.
-
-5. ZIP all the targets you plan to publish, in this case Chrome and Firefox.
-
-   ```sh
-   wxt zip
-   wxt zip -b firefox
-   ```
-
-6. Test your credentials by running the `submit:dry` command:
-
-   ```sh
-   pnpm submit:dry \
-     --chrome-zip .output/your-extension-X.Y.Z-chrome.zip \
-     --firefox-zip .output/your-extension-X.Y.Z-firefox.zip \
-     --firefox-sources-zip .output/your-extension-X.Y.Z-sources.zip \
-     --edge-zip .output/your-extension-X.Y.Z-chrome.zip
-   ```
-
-7. Upload and submit your extension for review:
-
-   ```sh
-   pnpm submit \
-     --chrome-zip .output/your-extension-X.Y.Z-chrome.zip \
-     --firefox-zip .output/your-extension-X.Y.Z-firefox.zip \
-     --firefox-sources-zip .output/your-extension-X.Y.Z-sources.zip \
-     --edge-zip .output/your-extension-X.Y.Z-chrome.zip
-   ```
+:::tip
+See the [Firefox Addon Store](#firefox-addon-store) section for more details about the `--firefox-sources-zip` option.
+:::
 
 ## GitHub Action
 
-Here's an example of a GitHub Action to automate submiting new versions of your extension for review. Ensure that you've added all required secrets used in the workflow to the repo's settings.
+Here's an example of a GitHub Action to automate submitting new versions of your extension for review. Ensure that you've added all required secrets used in the workflow to the repo's settings.
 
 ```yml
 # TODO
 ```
 
-## Chrome Web Store
+## Stores
 
-✅ Automated &bull; [Developer Dashboard](https://chrome.google.com/webstore/developer/dashboard) &bull; [Publishing Docs](https://developer.chrome.com/docs/webstore/publish/)
+### Chrome Web Store
+
+> ✅ Supported &bull; [Developer Dashboard](https://chrome.google.com/webstore/developer/dashboard) &bull; [Publishing Docs](https://developer.chrome.com/docs/webstore/publish/)
 
 To create a ZIP for Chrome:
 
@@ -108,15 +82,15 @@ To create a ZIP for Chrome:
 wxt zip
 ```
 
-## Firefox Addon Store
+### Firefox Addon Store
 
-✅ Automated &bull; [Developer Dashboard](https://addons.mozilla.org/developers/) &bull; [Publishing Docs](https://extensionworkshop.com/documentation/publish/submitting-an-add-on/)
+> ✅ Supported &bull; [Developer Dashboard](https://addons.mozilla.org/developers/) &bull; [Publishing Docs](https://extensionworkshop.com/documentation/publish/submitting-an-add-on/)
 
 Firefox requires you to upload a ZIP of your source code. This allows them to rebuild your extension and review the code in a readable way. More details can be found in [Firefox's docs](https://extensionworkshop.com/documentation/publish/source-code-submission/).
 
-WXT and `publish-browser-extension` both fully support generating and automatically submitting a source code ZIP.
+WXT fully supports generating and automatically submitting a source code ZIP.
 
-When you run `wxt zip -b firefox`, your sources are zipped into the `.output` directory along with your built extension. WXT is configured to exclude certain files such as config files, hidden files, and tests. However, it's important to manually check the ZIP to ensure it only contains the files necessary to rebuild your extension.
+When you run `wxt zip -b firefox`, your sources are zipped into the `.output` directory alongside the extension. WXT will automatically exclude certain files such as config files, hidden files, and tests. However, it's important to manually check the ZIP to ensure it only contains the files necessary to rebuild your extension.
 
 To customize which files are zipped, add the `zip` option to your config file.
 
@@ -152,22 +126,56 @@ yarn zip:firefox
 
 :::
 
-Ensure that you have a `README.md` or `SOURCE_CODE_REVIEW.md` file with the above commands so that the Firefox team knows how to build your extension.
-
-## Safari
-
-🚧 Not automated at this time
+Make sure the build output is the exact same when running `wxt build -b firefox` in your main project and inside the zipped sources.
 
 :::warning
-🚧 WXT does not currently support automated publishing for Safari. Safari extensions require a native MacOS or iOS app wrapper, which WXT cannot create at this time. For now, if you want to publish to Safari, follow this guide:
-
-https://developer.apple.com/documentation/safariservices/safari_web_extensions/distributing_your_safari_web_extension
+If you use a `.env` files, they can effect the chunk hashes in the output directory. Either delete the .env file before running `wxt zip -b firefox`, or include it in your sources zip with the [`zip.includeSources`](/api/wxt/interfaces/InlineConfig#includesources) option. Be careful to not include any secrets in your `.env` files.
 
+See Issue [#377](https://github.com/wxt-dev/wxt/issues/377) for more details.
 :::
 
-## Edge Addons
+Ensure that you have a `README.md` or `SOURCE_CODE_REVIEW.md` file with the above commands so that the Firefox team knows how to build your extension.
 
-✅ Automated &bull; [Developer Dashboard](https://aka.ms/PartnerCenterLogin) &bull; [Publishing Docs](https://learn.microsoft.com/en-us/microsoft-edge/extensions-chromium/publish/publish-extension)
+#### Private Packages
+
+If you use private packages and you don't want to provide your auth token to the Firefox team during the review process, you can use `zip.downloadPackages` to download any private packages and include them in the zip.
+
+```ts
+// wxt.config.ts
+export default defineConfig({
+  zip: {
+    downloadPackages: [
+      '@mycompany/some-package',
+      //...
+    ],
+  },
+});
+```
+
+Depending on your package manager, the `package.json` in the sources zip will be modified to use the downloaded dependencies via the `overrides` or `resolutions` field.
+
+:::warning
+WXT uses the command `npm pack <package-name>` to download the package. That means regardless of your package manager, you need to properly setup a `.npmrc` file. NPM and PNPM both respect `.npmrc` files, but Yarn and Bun have their own ways of authorizing private registries, so you'll need to add an `.npmrc` file.
+:::
+
+### Safari
+
+> 🚧 Not supported yet
+
+WXT does not currently support automated publishing for Safari. Safari extensions require a native MacOS or iOS app wrapper, which WXT does not create yet. For now, if you want to publish to Safari, follow this guide:
+
+- [Converting a web extension for Safari](https://developer.apple.com/documentation/safariservices/safari_web_extensions/converting_a_web_extension_for_safari) - "Convert your existing extension to a Safari web extension using Xcode’s command-line tool."
+
+When running the `safari-web-extension-converter` CLI tool, pass the `.output/safari-mv2` or `.output/safari-mv3` directory, not your source code directory.
+
+```sh
+pnpm wxt build -b safari
+xcrun safari-web-extension-converter .output/safari-mv2
+```
+
+### Edge Addons
+
+> ✅ Supported &bull; [Developer Dashboard](https://aka.ms/PartnerCenterLogin) &bull; [Publishing Docs](https://learn.microsoft.com/en-us/microsoft-edge/extensions-chromium/publish/publish-extension)
 
 No need to create a specific ZIP for Edge. If you're already publishing to the Chrome Web Store, you can reuse your Chrome ZIP.
 

docs/guide/storage.md

@@ -1,3 +1,7 @@
+---
+outline: deep
+---
+
 # Storage API
 
 WXT provides a simplified API to replace the `browser.storage.*` APIs. Use the `storage` auto-import from `wxt/storage` or import it manually to get started:
@@ -35,6 +39,8 @@ await storage.watch<number>(
 await storage.getMeta<{ v: number }>('local:installDate');
 ```
 
+For a full list of methods available, see the [API reference](/api/wxt/storage/interfaces/WxtStorage).
+
 ## Watchers
 
 To listen for storage changes, use the `storage.watch` function. It lets you setup a listener for a single key:
@@ -58,7 +64,7 @@ unwatch();
 
 `wxt/storage` also supports setting metadata for keys, stored at `key + "$"`. Metadata is a collection of properties associated with a key. It might be a version number, last modified date, etc.
 
-[Other than versioning](#versioning-and-migrations), you are responsible for managing a field's metadata:
+[Other than versioning](#versioning), you are responsible for managing a field's metadata:
 
 ```ts
 await Promise.all([
@@ -116,7 +122,9 @@ const unwatch = showChangelogOnUpdate.watch(() => {
 });
 ```
 
-### Versioning and Migrations
+For a full list of properties and methods available, see the [API reference](/api/wxt/storage/interfaces/WxtStorageItem).
+
+### Versioning
 
 You can add versioning to storage items if you expect them to grow or change over time. When defining the first version of an item, start with version 1.
 
@@ -252,3 +260,7 @@ export const ignoredWebsites = storage.defineItem<IgnoredWebsiteV2[]>( // [!code
 ```
 
 :::
+
+### Running Migrations
+
+As soon as `storage.defineItem` is called, WXT checks if migrations need to be ran, and if so, runs them. Calls to get or update the storage item's value or metadata (`getValue`, `setValue`, `removeValue`, `getMeta`, etc) will automatically wait for the migration process to finish before actually reading or writing values.

docs/guide/testing.md

@@ -19,7 +19,7 @@ If you want to try to use a different framework for unit tests, you will need to
 - **Auto-imports**: Add `unimport` to your test environment or disable them by setting `imports: false` in your `wxt.config.ts` file
 - **`browser` mock**: Mock the `webextension-polyfill` module globally with `wxt/dist/virtual/mock-browser.js`
 - **[Remote Code Bundling](/guide/remote-code)**: If you use it, configure your environment to handle the `url:` module prefix
-- **Global Variables**: If you consume them, manually define globals provided by WXT (like `__BROWSER__`) by adding them to the global scope before accessing them (`globalThis.__BROWSER__ = "chrome"`)
+- **Global Variables**: If you consume them, manually define globals provided by WXT (like `import.meta.env.BROWSER`) by adding them to the global scope before accessing them (`import.meta.env.BROWSER = "chrome"`)
 - **Import paths**: If you use the `@/` or `~/` path aliases, add them to your test environment
 
 [Here's how Vitest is configured](https://github.com/wxt-dev/wxt/blob/main/src/testing/wxt-vitest-plugin.ts) for reference.

docs/index.md

@@ -6,7 +6,7 @@ title: Next-gen Web Extension Framework
 hero:
   name: WXT
   text: Next-gen Web Extension Framework
-  tagline: An open source tool that makes Chrome Extension devlopment faster than ever before.
+  tagline: An open source tool that makes Chrome Extension development faster than ever before.
   image:
     src: /hero-logo.svg
     alt: WXT
@@ -47,11 +47,9 @@ features:
     details: Nuxt-like auto-imports to speed up development.
     link: /guide/auto-imports
     linkText: Read docs
-  - icon: ⬇️
-    title: Bundle Remote Code
-    details: Downloads and bundles remote code imported from URLs.
-    link: /guide/remote-code
-    linkText: Read docs
+  - icon: 🤖
+    title: Automated Publishing
+    details: Automatically zip, upload, submit, and publish extensions.
   - icon: 🎨
     title: Frontend Framework Agnostic
     details: Works with any front-end framework with a Vite plugin.
@@ -64,10 +62,12 @@ features:
     linkText: See templates
   - icon: 📏
     title: Bundle Analysis
-    details: Tools for analyizing the final extension bundle and minimizing your extension's size.
-  - icon: 🤖
-    title: Automated Publishing
-    details: 'Coming soon. Automatically zip, upload, and release extensions.'
+    details: Tools for analyzing the final extension bundle and minimizing your extension's size.
+  - icon: ⬇️
+    title: Bundle Remote Code
+    details: Downloads and bundles remote code imported from URLs.
+    link: /guide/remote-code
+    linkText: Read docs
 ---
 
 <section class="vp-doc">

e2e/tests/analysis.test.ts

@@ -0,0 +1,92 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { TestProject } from '../utils';
+import { resetBundleIncrement } from '~/core/builders/vite/plugins';
+
+describe('Analysis', () => {
+  beforeEach(() => {
+    resetBundleIncrement();
+  });
+
+  it('should output a stats.html with no part files by default', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html');
+    project.addFile('entrypoints/options.html');
+    project.addFile(
+      'entrypoints/background.ts',
+      'export default defineBackground(() => {});',
+    );
+
+    await project.build({
+      analysis: {
+        enabled: true,
+      },
+    });
+
+    expect(await project.fileExists('stats.html')).toBe(true);
+    expect(await project.fileExists('.output/chrome-mv3/stats-0.json')).toBe(
+      false,
+    );
+  });
+
+  it('should save part files when requested', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html');
+    project.addFile('entrypoints/options.html');
+    project.addFile(
+      'entrypoints/background.ts',
+      'export default defineBackground(() => {});',
+    );
+
+    await project.build({
+      analysis: {
+        enabled: true,
+        keepArtifacts: true,
+      },
+    });
+
+    expect(await project.fileExists('stats.html')).toBe(true);
+    expect(await project.fileExists('stats-0.json')).toBe(true);
+    expect(await project.fileExists('stats-1.json')).toBe(true);
+  });
+
+  it('should support customizing the stats output directory', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html');
+    project.addFile('entrypoints/options.html');
+    project.addFile(
+      'entrypoints/background.ts',
+      'export default defineBackground(() => {});',
+    );
+
+    await project.build({
+      analysis: {
+        enabled: true,
+        outputFile: 'stats/bundle.html',
+      },
+    });
+
+    expect(await project.fileExists('stats/bundle.html')).toBe(true);
+  });
+
+  it('should place artifacts next to the custom output file', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html');
+    project.addFile('entrypoints/options.html');
+    project.addFile(
+      'entrypoints/background.ts',
+      'export default defineBackground(() => {});',
+    );
+
+    await project.build({
+      analysis: {
+        enabled: true,
+        outputFile: 'stats/bundle.html',
+        keepArtifacts: true,
+      },
+    });
+
+    expect(await project.fileExists('stats/bundle.html')).toBe(true);
+    expect(await project.fileExists('stats/bundle-0.json')).toBe(true);
+    expect(await project.fileExists('stats/bundle-1.json')).toBe(true);
+  });
+});

e2e/tests/auto-imports.test.ts

@@ -7,7 +7,7 @@ describe('Auto Imports', () => {
       const project = new TestProject();
       project.addFile('entrypoints/popup.html', `<html></html>`);
 
-      await project.build();
+      await project.prepare();
 
       expect(await project.serializeFile('.wxt/types/imports.d.ts'))
         .toMatchInlineSnapshot(`
@@ -38,7 +38,7 @@ describe('Auto Imports', () => {
       const project = new TestProject();
       project.addFile('entrypoints/popup.html', `<html></html>`);
 
-      await project.build();
+      await project.prepare();
 
       expect(await project.serializeFile('.wxt/wxt.d.ts'))
         .toMatchInlineSnapshot(`
@@ -63,7 +63,7 @@ describe('Auto Imports', () => {
       });
       project.addFile('entrypoints/popup.html', `<html></html>`);
 
-      await project.build();
+      await project.prepare();
 
       expect(await project.fileExists('.wxt/types/imports.d.ts')).toBe(false);
     });
@@ -75,7 +75,7 @@ describe('Auto Imports', () => {
       });
       project.addFile('entrypoints/popup.html', `<html></html>`);
 
-      await project.build();
+      await project.prepare();
 
       expect(
         await project.serializeFile('.wxt/wxt.d.ts'),
@@ -93,4 +93,82 @@ describe('Auto Imports', () => {
       );
     });
   });
+
+  describe('eslintrc', () => {
+    it('should output the globals list for ESLint to consume', async () => {
+      const project = new TestProject();
+      project.addFile('entrypoints/popup.html', `<html></html>`);
+
+      await project.prepare({
+        imports: {
+          eslintrc: {
+            enabled: true,
+          },
+        },
+      });
+
+      expect(await project.serializeFile('.wxt/eslintrc-auto-import.json'))
+        .toMatchInlineSnapshot(`
+          ".wxt/eslintrc-auto-import.json
+          ----------------------------------------
+          {
+            "globals": {
+              "ContentScriptContext": true,
+              "InvalidMatchPattern": true,
+              "MatchPattern": true,
+              "browser": true,
+              "createIframeUi": true,
+              "createIntegratedUi": true,
+              "createShadowRootUi": true,
+              "defineBackground": true,
+              "defineConfig": true,
+              "defineContentScript": true,
+              "defineUnlistedScript": true,
+              "fakeBrowser": true,
+              "storage": true
+            }
+          }
+          "
+        `);
+    });
+
+    it('should allow customizing the output', async () => {
+      const project = new TestProject();
+      project.addFile('entrypoints/popup.html', `<html></html>`);
+
+      await project.prepare({
+        imports: {
+          eslintrc: {
+            enabled: true,
+            filePath: project.resolvePath('example.json'),
+            globalsPropValue: 'readonly',
+          },
+        },
+      });
+
+      expect(await project.serializeFile('example.json'))
+        .toMatchInlineSnapshot(`
+          "example.json
+          ----------------------------------------
+          {
+            "globals": {
+              "ContentScriptContext": "readonly",
+              "InvalidMatchPattern": "readonly",
+              "MatchPattern": "readonly",
+              "browser": "readonly",
+              "createIframeUi": "readonly",
+              "createIntegratedUi": "readonly",
+              "createShadowRootUi": "readonly",
+              "defineBackground": "readonly",
+              "defineConfig": "readonly",
+              "defineContentScript": "readonly",
+              "defineUnlistedScript": "readonly",
+              "fakeBrowser": "readonly",
+              "storage": "readonly"
+            }
+          }
+          "
+        `);
+    });
+  });
 });

e2e/tests/hooks.test.ts

@@ -0,0 +1,99 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { TestProject } from '../utils';
+import { WxtHooks } from '~/types';
+
+const hooks: WxtHooks = {
+  ready: vi.fn(),
+  'build:before': vi.fn(),
+  'build:done': vi.fn(),
+  'build:manifestGenerated': vi.fn(),
+  'entrypoints:resolved': vi.fn(),
+  'entrypoints:grouped': vi.fn(),
+};
+
+function expectHooksToBeCalled(called: Record<keyof WxtHooks, boolean>) {
+  Object.keys(hooks).forEach((key) => {
+    const hookName = key as keyof WxtHooks;
+    const times = called[hookName] ? 1 : 0;
+    expect(
+      hooks[hookName],
+      `Expected "${hookName}" to be called ${times} time(s)`,
+    ).toBeCalledTimes(called[hookName] ? 1 : 0);
+  });
+}
+
+describe('Hooks', () => {
+  beforeEach(() => {
+    Object.values(hooks).forEach((fn) => fn.mockReset());
+  });
+
+  it('prepare should call hooks', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html', '<html></html>');
+
+    await project.prepare({ hooks });
+
+    expectHooksToBeCalled({
+      ready: true,
+      'build:before': false,
+      'build:done': false,
+      'build:manifestGenerated': false,
+      'entrypoints:grouped': false,
+      'entrypoints:resolved': true,
+    });
+  });
+
+  it('build should call hooks', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html', '<html></html>');
+
+    await project.build({ hooks });
+
+    expectHooksToBeCalled({
+      ready: true,
+      'build:before': true,
+      'build:done': true,
+      'build:manifestGenerated': true,
+      'entrypoints:grouped': true,
+      'entrypoints:resolved': true,
+    });
+  });
+
+  it('zip should call hooks', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html', '<html></html>');
+
+    await project.zip({ hooks });
+
+    expectHooksToBeCalled({
+      ready: true,
+      'build:before': true,
+      'build:done': true,
+      'build:manifestGenerated': true,
+      'entrypoints:grouped': true,
+      'entrypoints:resolved': true,
+    });
+  });
+
+  it('server.start should call hooks', async () => {
+    const project = new TestProject();
+    project.addFile('entrypoints/popup.html', '<html></html>');
+
+    const server = await project.startServer({
+      hooks,
+      runner: {
+        disabled: true,
+      },
+    });
+    await server.stop();
+
+    expectHooksToBeCalled({
+      ready: true,
+      'build:before': true,
+      'build:done': true,
+      'build:manifestGenerated': true,
+      'entrypoints:grouped': true,
+      'entrypoints:resolved': true,
+    });
+  });
+});

e2e/tests/init.test.ts

@@ -25,6 +25,7 @@ describe('Init command', () => {
         "assets/vue.svg",
         "components/HelloWorld.vue",
         "entrypoints/background.ts",
+        "entrypoints/content.ts",
         "entrypoints/popup/App.vue",
         "entrypoints/popup/index.html",
         "entrypoints/popup/main.ts",

e2e/tests/output-structure.test.ts

@@ -227,4 +227,169 @@ describe('Output Directory Structure', () => {
       true,
     );
   });
+
+  it('should generate ESM background script when type=module', async () => {
+    const project = new TestProject();
+    project.addFile(
+      'utils/log.ts',
+      `export function logHello(name: string) {
+        console.log(\`Hello \${name}!\`);
+      }`,
+    );
+    project.addFile(
+      'entrypoints/background.ts',
+      `export default defineBackground({
+        type: "module",
+        main() {
+          logHello("background");
+        },
+      })`,
+    );
+    project.addFile(
+      'entrypoints/popup/index.html',
+      `<html>
+        <head>
+          <script type="module" src="./main.ts"></script>
+        </head>
+      </html>`,
+    );
+    project.addFile('entrypoints/popup/main.ts', `logHello('popup')`);
+
+    await project.build({
+      experimental: {
+        // Simplify the build output for comparison
+        includeBrowserPolyfill: false,
+      },
+      vite: () => ({
+        build: {
+          // Make output for snapshot readible
+          minify: false,
+        },
+      }),
+    });
+
+    expect(await project.serializeFile('.output/chrome-mv3/background.js'))
+      .toMatchInlineSnapshot(`
+        ".output/chrome-mv3/background.js
+        ----------------------------------------
+        import { l as logHello } from "./chunks/log-bezs0tt4.js";
+        function defineBackground(arg) {
+          if (typeof arg === "function")
+            return { main: arg };
+          return arg;
+        }
+        const definition = defineBackground({
+          type: "module",
+          main() {
+            logHello("background");
+          }
+        });
+        chrome;
+        function print(method, ...args) {
+          return;
+        }
+        var logger = {
+          debug: (...args) => print(console.debug, ...args),
+          log: (...args) => print(console.log, ...args),
+          warn: (...args) => print(console.warn, ...args),
+          error: (...args) => print(console.error, ...args)
+        };
+        try {
+          const res = definition.main();
+          if (res instanceof Promise) {
+            console.warn(
+              "The background's main() function return a promise, but it must be synchronous"
+            );
+          }
+        } catch (err) {
+          logger.error("The background crashed on startup!");
+          throw err;
+        }
+        "
+      `);
+  });
+
+  it('should generate IIFE background script when type=undefined', async () => {
+    const project = new TestProject();
+    project.addFile(
+      'utils/log.ts',
+      `export function logHello(name: string) {
+          console.log(\`Hello \${name}!\`);
+        }`,
+    );
+    project.addFile(
+      'entrypoints/background.ts',
+      `export default defineBackground({
+          main() {
+            logHello("background");
+          },
+        })`,
+    );
+    project.addFile(
+      'entrypoints/popup/index.html',
+      `<html>
+          <head>
+            <script type="module" src="./main.ts"></script>
+          </head>
+        </html>`,
+    );
+    project.addFile('entrypoints/popup/main.ts', `logHello('popup')`);
+
+    await project.build({
+      experimental: {
+        // Simplify the build output for comparison
+        includeBrowserPolyfill: false,
+      },
+      vite: () => ({
+        build: {
+          // Make output for snapshot readible
+          minify: false,
+        },
+      }),
+    });
+
+    expect(await project.serializeFile('.output/chrome-mv3/background.js'))
+      .toMatchInlineSnapshot(`
+        ".output/chrome-mv3/background.js
+        ----------------------------------------
+        (function() {
+          "use strict";
+          function defineBackground(arg) {
+            if (typeof arg === "function")
+              return { main: arg };
+            return arg;
+          }
+          function logHello(name) {
+            console.log(\`Hello \${name}!\`);
+          }
+          const definition = defineBackground({
+            main() {
+              logHello("background");
+            }
+          });
+          chrome;
+          function print(method, ...args) {
+            return;
+          }
+          var logger = {
+            debug: (...args) => print(console.debug, ...args),
+            log: (...args) => print(console.log, ...args),
+            warn: (...args) => print(console.warn, ...args),
+            error: (...args) => print(console.error, ...args)
+          };
+          try {
+            const res = definition.main();
+            if (res instanceof Promise) {
+              console.warn(
+                "The background's main() function return a promise, but it must be synchronous"
+              );
+            }
+          } catch (err) {
+            logger.error("The background crashed on startup!");
+            throw err;
+          }
+        })();
+        "
+      `);
+  });
 });

e2e/tests/typescript-project.test.ts

@@ -6,7 +6,7 @@ describe('TypeScript Project', () => {
     const project = new TestProject();
     project.addFile('entrypoints/unlisted.html');
 
-    await project.build();
+    await project.prepare();
 
     const output = await project.serializeFile('.wxt/types/globals.d.ts');
     expect(output).toMatchInlineSnapshot(`
@@ -14,16 +14,19 @@ describe('TypeScript Project', () => {
       ----------------------------------------
       // Generated by wxt
       export {}
-      declare global {
-        const __MANIFEST_VERSION__: 2 | 3;
-        const __BROWSER__: string;
-        const __IS_CHROME__: boolean;
-        const __IS_FIREFOX__: boolean;
-        const __IS_SAFARI__: boolean;
-        const __IS_EDGE__: boolean;
-        const __IS_OPERA__: boolean;
-        const __COMMAND__: "build" | "serve";
-        const __ENTRYPOINT__: string;
+      interface ImportMetaEnv {
+        readonly MANIFEST_VERSION: 2 | 3;
+        readonly BROWSER: string;
+        readonly CHROME: boolean;
+        readonly FIREFOX: boolean;
+        readonly SAFARI: boolean;
+        readonly EDGE: boolean;
+        readonly OPERA: boolean;
+        readonly COMMAND: "build" | "serve";
+        readonly ENTRYPOINT: string;
+      }
+      interface ImportMeta {
+        readonly env: ImportMetaEnv
       }
       "
     `);
@@ -35,7 +38,7 @@ describe('TypeScript Project', () => {
     project.addFile('entrypoints/options.html');
     project.addFile('entrypoints/sandbox.html');
 
-    await project.build();
+    await project.prepare();
 
     const output = await project.serializeFile('.wxt/types/paths.d.ts');
     expect(output).toMatchInlineSnapshot(`
@@ -100,7 +103,7 @@ describe('TypeScript Project', () => {
       },
     });
 
-    await project.build();
+    await project.prepare();
 
     const output = await project.serializeFile('.wxt/types/i18n.d.ts');
     expect(output).toMatchInlineSnapshot(`
@@ -133,7 +136,7 @@ describe('TypeScript Project', () => {
             options?: GetMessageOptions,
           ): string;
           /**
-           * 
+           * No message description.
            *
            * "<browser.i18n.getUiLocale()>"
            */
@@ -222,7 +225,7 @@ describe('TypeScript Project', () => {
     const project = new TestProject();
     project.addFile('entrypoints/unlisted.html');
 
-    await project.build();
+    await project.prepare();
 
     const output = await project.serializeFile('.wxt/wxt.d.ts');
     expect(output).toMatchInlineSnapshot(`
@@ -242,7 +245,7 @@ describe('TypeScript Project', () => {
     const project = new TestProject();
     project.addFile('entrypoints/unlisted.html');
 
-    await project.build();
+    await project.prepare();
 
     const output = await project.serializeFile('.wxt/tsconfig.json');
     expect(output).toMatchInlineSnapshot(`
@@ -286,7 +289,7 @@ describe('TypeScript Project', () => {
       srcDir: 'src',
     });
 
-    await project.build();
+    await project.prepare();
 
     const output = await project.serializeFile('.wxt/tsconfig.json');
     expect(output).toMatchInlineSnapshot(`
@@ -334,7 +337,7 @@ describe('TypeScript Project', () => {
       },
     });
 
-    await project.build();
+    await project.prepare();
 
     const output = await project.serializeFile('.wxt/tsconfig.json');
     expect(output).toMatchInlineSnapshot(`

e2e/tests/user-config.test.ts

@@ -107,4 +107,29 @@ describe('User Config', () => {
     });
     expect(withoutPolyfill).not.toBe(withPolyfill);
   });
+
+  it('should respect changing config files', async () => {
+    const project = new TestProject();
+    project.addFile(
+      'src/entrypoints/background.ts',
+      `export default defineBackground(
+        () => console.log('Hello background'),
+      );`,
+    );
+    project.addFile(
+      'test.config.ts',
+      `import { defineConfig } from 'wxt';
+      
+      export default defineConfig({
+        outDir: ".custom-output",
+        srcDir: "src",
+      });`,
+    );
+
+    await project.build({ configFile: 'test.config.ts' });
+
+    expect(
+      await project.fileExists('.custom-output/chrome-mv3/background.js'),
+    ).toBe(true);
+  });
 });

e2e/tests/zip.test.ts

@@ -0,0 +1,74 @@
+import { describe, expect, it } from 'vitest';
+import { TestProject } from '../utils';
+import extract from 'extract-zip';
+import { execaCommand } from 'execa';
+import { readFile, writeFile } from 'fs-extra';
+
+process.env.WXT_PNPM_IGNORE_WORKSPACE = 'true';
+
+describe('Zipping', () => {
+  it('should download packages and produce a valid build when zipping sources', async () => {
+    const project = new TestProject({
+      name: 'test',
+      version: '1.0.0',
+      dependencies: {
+        flatten: '1.0.3',
+      },
+    });
+    project.addFile(
+      'entrypoints/background.ts',
+      'export default defineBackground(() => {});',
+    );
+    const unzipDir = project.resolvePath('.output/test-1.0.0-sources');
+    const sourcesZip = project.resolvePath('.output/test-1.0.0-sources.zip');
+
+    await project.zip({
+      browser: 'firefox',
+      zip: { downloadPackages: ['flatten'] },
+    });
+    expect(await project.fileExists('.output/')).toBe(true);
+
+    await extract(sourcesZip, { dir: unzipDir });
+    // Update package json wxt path
+    const packageJsonPath = project.resolvePath(unzipDir, 'package.json');
+    const packageJson = JSON.parse(await readFile(packageJsonPath, 'utf-8'));
+    packageJson.dependencies.wxt = '../../../../..';
+    await writeFile(
+      packageJsonPath,
+      JSON.stringify(packageJson, null, 2),
+      'utf-8',
+    );
+
+    // Build zipped extension
+    await expect(
+      execaCommand('pnpm i --ignore-workspace --frozen-lockfile false', {
+        cwd: unzipDir,
+      }),
+    ).resolves.toMatchObject({ exitCode: 0 });
+    await expect(
+      execaCommand('pnpm wxt build -b firefox', { cwd: unzipDir }),
+    ).resolves.toMatchObject({ exitCode: 0 });
+
+    await expect(project.fileExists(unzipDir, '.output')).resolves.toBe(true);
+    expect(
+      await project.serializeFile(
+        project.resolvePath(unzipDir, 'package.json'),
+      ),
+    ).toMatchInlineSnapshot(`
+      ".output/test-1.0.0-sources/package.json
+      ----------------------------------------
+      {
+        "name": "test",
+        "description": "Example description",
+        "version": "1.0.0",
+        "dependencies": {
+          "wxt": "../../../../..",
+          "flatten": "1.0.3"
+        },
+        "resolutions": {
+          "flatten@1.0.3": "file://./.wxt/local_modules/flatten-1.0.3.tgz"
+        }
+      }"
+    `);
+  });
+});

e2e/utils.ts

@@ -2,7 +2,14 @@ import { dirname, join, relative, resolve } from 'path';
 import fs from 'fs-extra';
 import glob from 'fast-glob';
 import { execaCommand } from 'execa';
-import { InlineConfig, UserConfig, build } from '../src';
+import {
+  InlineConfig,
+  UserConfig,
+  build,
+  createServer,
+  prepare,
+  zip,
+} from '../src';
 import { normalizePath } from '../src/core/utils/paths';
 import merge from 'lodash.merge';
 
@@ -63,15 +70,41 @@ export class TestProject {
     if (filename === 'wxt.config.ts') this.config = {};
   }
 
-  /**
-   * Write the files to the test directory install dependencies, and build the project.
-   */
+  async prepare(config: InlineConfig = {}) {
+    await this.writeProjectToDisk();
+    await prepare({ ...config, root: this.root });
+  }
+
   async build(config: InlineConfig = {}) {
+    await this.writeProjectToDisk();
+    await build({ ...config, root: this.root });
+  }
+
+  async zip(config: InlineConfig = {}) {
+    await this.writeProjectToDisk();
+    await zip({ ...config, root: this.root });
+  }
+
+  async startServer(config: InlineConfig = {}) {
+    await this.writeProjectToDisk();
+    const server = await createServer({ ...config, root: this.root });
+    await server.start();
+    return server;
+  }
+
+  /**
+   * Call `path.resolve` relative to the project's root directory.
+   */
+  resolvePath(...path: string[]): string {
+    return resolve(this.root, ...path);
+  }
+
+  private async writeProjectToDisk() {
     if (this.config == null) this.setConfigFileConfig();
 
     for (const file of this.files) {
       const [name, content] = file;
-      const filePath = resolve(this.root, name);
+      const filePath = this.resolvePath(name);
       const fileDir = dirname(filePath);
       await fs.ensureDir(fileDir);
       await fs.writeFile(filePath, content ?? '', 'utf-8');
@@ -80,7 +113,6 @@ export class TestProject {
     await execaCommand('pnpm --ignore-workspace i --ignore-scripts', {
       cwd: this.root,
     });
-    await build({ ...config, root: this.root });
   }
 
   /**
@@ -115,13 +147,13 @@ export class TestProject {
     ignoreContentsOfFilenames?: string[],
   ): Promise<string> {
     const outputFiles = await glob('**/*', {
-      cwd: resolve(this.root, dir),
+      cwd: this.resolvePath(dir),
       ignore: ['**/node_modules', '**/.output'],
     });
     outputFiles.sort();
     const fileContents = [];
     for (const file of outputFiles) {
-      const path = resolve(this.root, dir, file);
+      const path = this.resolvePath(dir, file);
       const isContentIgnored = !!ignoreContentsOfFilenames?.find(
         (ignoredFile) => normalizePath(path).endsWith(ignoredFile),
       );
@@ -131,25 +163,25 @@ export class TestProject {
   }
 
   /**
-   * @param path An abosolute path to a file or a path relative to the root.
+   * @param path An absolute path to a file or a path relative to the root.
    * @param ignoreContents An optional boolean that, when true, causes this function to not print
    *                       the file contents.
    */
   async serializeFile(path: string, ignoreContents?: boolean): Promise<string> {
-    const absolutePath = resolve(this.root, path);
+    const absolutePath = this.resolvePath(path);
     return [
       normalizePath(relative(this.root, absolutePath)),
       ignoreContents ? '<contents-ignored>' : await fs.readFile(absolutePath),
     ].join(`\n${''.padEnd(40, '-')}\n`);
   }
 
-  fileExists(path: string): Promise<boolean> {
-    return fs.exists(resolve(this.root, path));
+  fileExists(...path: string[]): Promise<boolean> {
+    return fs.exists(this.resolvePath(...path));
   }
 
   async getOutputManifest(
     path: string = '.output/chrome-mv3/manifest.json',
   ): Promise<any> {
-    return await fs.readJson(resolve(this.root, path));
+    return await fs.readJson(this.resolvePath(path));
   }
 }

package.json

@@ -1,7 +1,7 @@
 {
   "name": "wxt",
   "type": "module",
-  "version": "0.14.4",
+  "version": "0.17.6",
   "description": "Next gen framework for developing web extensions",
   "engines": {
     "node": ">=18",
@@ -30,7 +30,10 @@
     "bin",
     "dist"
   ],
-  "bin": "./bin/wxt.mjs",
+  "bin": {
+    "wxt": "./bin/wxt.mjs",
+    "wxt-publish-extension": "./bin/wxt-publish-extension.cjs"
+  },
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
   "types": "./dist/index.d.ts",
@@ -82,7 +85,7 @@
     }
   },
   "scripts": {
-    "wxt": "tsx src/cli.ts",
+    "wxt": "tsx src/cli/index.ts",
     "build": "tsx scripts/build.ts",
     "format": "prettier --write .",
     "format:check": "prettier --check .",
@@ -103,6 +106,7 @@
     "sync-releases": "pnpx changelogen@latest gh release"
   },
   "dependencies": {
+    "@aklinker1/rollup-plugin-visualizer": "5.12.0",
     "@types/webextension-polyfill": "^0.10.5",
     "@webext-core/fake-browser": "^1.3.1",
     "@webext-core/isolated-element": "^1.1.1",
@@ -120,33 +124,37 @@
     "fs-extra": "^11.1.1",
     "get-port": "^7.0.0",
     "giget": "^1.1.3",
-    "immer": "^10.0.3",
+    "hookable": "^5.5.3",
     "is-wsl": "^3.0.0",
     "jiti": "^1.21.0",
     "json5": "^2.2.3",
+    "jszip": "^3.10.1",
     "linkedom": "^0.16.1",
     "minimatch": "^9.0.3",
+    "natural-compare": "^1.4.0",
     "normalize-path": "^3.0.0",
+    "nypm": "^0.3.6",
     "ora": "^7.0.1",
     "picocolors": "^1.0.0",
     "prompts": "^2.4.2",
-    "rollup-plugin-visualizer": "^5.9.2",
+    "publish-browser-extension": "^2.1.3",
     "unimport": "^3.4.0",
-    "vite": "^5.0.0",
-    "web-ext-run": "^0.1.0",
-    "webextension-polyfill": "^0.10.0",
-    "zip-dir": "^2.0.0"
+    "vite": "^5.1.3",
+    "web-ext-run": "^0.2.0",
+    "webextension-polyfill": "^0.10.0"
   },
   "devDependencies": {
     "@faker-js/faker": "^8.3.1",
     "@types/fs-extra": "^11.0.4",
     "@types/lodash.merge": "^4.6.9",
+    "@types/natural-compare": "^1.4.3",
     "@types/node": "^20.10.3",
     "@types/normalize-path": "^3.0.2",
     "@types/prompts": "^2.4.9",
     "@vitest/coverage-v8": "^1.0.1",
     "execa": "^8.0.1",
-    "happy-dom": "^12.10.3",
+    "extract-zip": "^2.0.1",
+    "happy-dom": "^13.3.8",
     "lint-staged": "^15.2.0",
     "lodash.merge": "^4.6.2",
     "npm-run-all": "^4.1.5",
@@ -161,7 +169,7 @@
     "typedoc-vitepress-theme": "1.0.0-next.3",
     "typescript": "^5.3.2",
     "vitepress": "1.0.0-rc.34",
-    "vitest": "^1.1.0",
+    "vitest": "^1.2.2",
     "vitest-mock-extended": "^1.3.1",
     "vue": "^3.3.10"
   },

scripts/build.ts

@@ -94,7 +94,7 @@ const config: tsup.Options[] = [
   {
     ...preset,
     entry: {
-      cli: 'src/cli.ts',
+      cli: 'src/cli/index.ts',
     },
     format: ['esm'],
     banner: {

src/__tests__/storage.test.ts

@@ -1,7 +1,15 @@
 import { fakeBrowser } from '@webext-core/fake-browser';
-import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { describe, it, expect, beforeEach, vi, expectTypeOf } from 'vitest';
 import { browser } from '~/browser';
-import { storage } from '~/storage';
+import { WxtStorageItem, storage } from '~/storage';
+
+/**
+ * This works because fakeBrowser is synchronous, and is will finish any number of chained
+ * calls within a single tick of the event loop, ie: a timeout of 0.
+ */
+async function waitForMigrations() {
+  return new Promise((res) => setTimeout(res));
+}
 
 describe('Storage Utils', () => {
   beforeEach(() => {
@@ -68,10 +76,7 @@ describe('Storage Utils', () => {
 
           const actual = await storage.getItems(params);
 
-          expect(actual).toHaveLength(3);
-          expected.forEach((item) => {
-            expect(actual).toContainEqual(item);
-          });
+          expect(actual).toEqual(expected);
         });
       });
 
@@ -384,417 +389,466 @@ describe('Storage Utils', () => {
           expect(cb).not.toBeCalled();
         });
       });
-
-      describe('defineItem', () => {
-        describe('versioning', () => {
-          /**
-           * This works because fakeBrowser is syncrounous, and is will finish any number of chained
-           * calls within a single tick of the event loop, ie: a timeout of 0.
-           */
-          async function waitForMigrations() {
-            return new Promise((res) => setTimeout(res));
-          }
-
-          it('should migrate values to the latest when a version upgrade is detected', async () => {
-            await fakeBrowser.storage[storageArea].set({
-              count: 2,
-              count$: { v: 1 },
-            });
-            const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
-            const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
-
-            const item = storage.defineItem<number, { v: number }>(
-              `${storageArea}:count`,
-              {
-                version: 3,
-                migrations: {
-                  2: migrateToV2,
-                  3: migrateToV3,
-                },
-              },
-            );
-            await waitForMigrations();
-
-            const actualValue = await item.getValue();
-            const actualMeta = await item.getMeta();
-
-            expect(actualValue).toEqual(12);
-            expect(actualMeta).toEqual({ v: 3 });
-
-            expect(migrateToV2).toBeCalledTimes(1);
-            expect(migrateToV2).toBeCalledWith(2);
-
-            expect(migrateToV3).toBeCalledTimes(1);
-            expect(migrateToV3).toBeCalledWith(4);
-          });
-
-          it("should not run migrations if the value doesn't exist yet", async () => {
-            const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
-            const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
-
-            const item = storage.defineItem<number, { v: number }>(
-              `${storageArea}:count`,
-              {
-                version: 3,
-                migrations: {
-                  2: migrateToV2,
-                  3: migrateToV3,
-                },
-              },
-            );
-            await waitForMigrations();
-
-            const actualValue = await item.getValue();
-            const actualMeta = await item.getMeta();
-
-            expect(actualValue).toBeNull();
-            expect(actualMeta).toEqual({});
-
-            expect(migrateToV2).not.toBeCalled();
-            expect(migrateToV3).not.toBeCalled();
-          });
-
-          it('should run the v2 migration when converting an unversioned item to a versioned one', async () => {
-            await fakeBrowser.storage[storageArea].set({
-              count: 2,
-            });
-            const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
-
-            const item = storage.defineItem<number, { v: number }>(
-              `${storageArea}:count`,
-              {
-                version: 2,
-                migrations: {
-                  2: migrateToV2,
-                },
-              },
-            );
-            await waitForMigrations();
-
-            const actualValue = await item.getValue();
-            const actualMeta = await item.getMeta();
-
-            expect(actualValue).toEqual(4);
-            expect(actualMeta).toEqual({ v: 2 });
-
-            expect(migrateToV2).toBeCalledTimes(1);
-            expect(migrateToV2).toBeCalledWith(2);
-          });
-
-          it('Should not run old migrations if the version is unchanged', async () => {
-            await fakeBrowser.storage[storageArea].set({
-              count: 2,
-              count$: { v: 3 },
-            });
-            const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
-            const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
-
-            storage.defineItem<number, { v: number }>(`${storageArea}:count`, {
-              version: 3,
-              migrations: {
-                2: migrateToV2,
-                3: migrateToV3,
-              },
-            });
-            await waitForMigrations();
-
-            expect(migrateToV2).not.toBeCalled();
-            expect(migrateToV3).not.toBeCalled();
-          });
-
-          it('should skip missing migration functions', async () => {
-            await fakeBrowser.storage[storageArea].set({
-              count: 2,
-              count$: { v: 0 },
-            });
-            const migrateToV1 = vi.fn((oldCount) => oldCount * 1);
-            const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
-
-            const item = storage.defineItem<number, { v: number }>(
-              `${storageArea}:count`,
-              {
-                version: 3,
-                migrations: {
-                  1: migrateToV1,
-                  3: migrateToV3,
-                },
-              },
-            );
-            await waitForMigrations();
-
-            const actualValue = await item.getValue();
-            const actualMeta = await item.getMeta();
-
-            expect(actualValue).toEqual(6);
-            expect(actualMeta).toEqual({ v: 3 });
-
-            expect(migrateToV1).toBeCalledTimes(1);
-            expect(migrateToV1).toBeCalledWith(2);
-
-            expect(migrateToV3).toBeCalledTimes(1);
-            expect(migrateToV3).toBeCalledWith(2);
-          });
-
-          it('should throw an error if the new version is less than the previous version', async () => {
-            const prevVersion = 2;
-            const nextVersion = 1;
-            await fakeBrowser.storage[storageArea].set({
-              count: 0,
-              count$: { v: prevVersion },
-            });
-
-            const item = storage.defineItem(`${storageArea}:count`, {
-              version: nextVersion,
-            });
-
-            // @ts-expect-error: _migrationsCompleted is returned, but untyped
-            await expect(item._migrationsCompleted).rejects.toThrow(
-              'version downgrade detected',
-            );
-          });
-        });
-
-        describe('getValue', () => {
-          it('should return the value from storage', async () => {
-            const expected = 2;
-            const item = storage.defineItem<number>(`${storageArea}:count`);
-            await fakeBrowser.storage[storageArea].set({ count: expected });
-
-            const actual = await item.getValue();
-
-            expect(actual).toBe(expected);
-          });
-
-          it('should return null if missing', async () => {
-            const item = storage.defineItem<number>(`${storageArea}:count`);
-
-            const actual = await item.getValue();
-
-            expect(actual).toBeNull();
-          });
-
-          it('should return the provided default value if missing', async () => {
-            const expected = 0;
-            const item = storage.defineItem(`${storageArea}:count`, {
-              defaultValue: expected,
-            });
-
-            const actual = await item.getValue();
-
-            expect(actual).toEqual(expected);
-          });
-        });
-
-        describe('getMeta', () => {
-          it('should return the value from storage at key+$', async () => {
-            const expected = { v: 2 };
-            const item = storage.defineItem<number, { v: number }>(
-              `${storageArea}:count`,
-            );
-            await fakeBrowser.storage[storageArea].set({ count$: expected });
-
-            const actual = await item.getMeta();
-
-            expect(actual).toBe(expected);
-          });
-
-          it('should return an empty object if missing', async () => {
-            const expected = {};
-            const item = storage.defineItem<number, { v: number }>(
-              `${storageArea}:count`,
-            );
-
-            const actual = await item.getMeta();
-
-            expect(actual).toEqual(expected);
-          });
-        });
-
-        describe('setValue', () => {
-          it('should set the value in storage', async () => {
-            const expected = 1;
-            const item = storage.defineItem<number>(`${storageArea}:count`);
-
-            await item.setValue(expected);
-            const actual = await item.getValue();
-
-            expect(actual).toBe(expected);
-          });
-
-          it.each([undefined, null])(
-            'should remove the value in storage when %s is passed in',
-            async (value) => {
-              const item = storage.defineItem<number>(`${storageArea}:count`);
-
-              // @ts-expect-error: undefined is not assignable to null, but we're testing that case on purpose
-              await item.setValue(value);
-              const actual = await item.getValue();
-
-              expect(actual).toBeNull();
-            },
-          );
-        });
-
-        describe('setMeta', () => {
-          it('should set metadata at key+$', async () => {
-            const expected = { date: Date.now() };
-            const item = storage.defineItem<number, { date: number }>(
-              `${storageArea}:count`,
-            );
-
-            await item.setMeta(expected);
-            const actual = await item.getMeta();
-
-            expect(actual).toEqual(expected);
-          });
-
-          it('should add to metadata if already present', async () => {
-            const existing = { v: 2 };
-            const newFields = { date: Date.now() };
-            const expected = { ...existing, ...newFields };
-            const item = storage.defineItem<
-              number,
-              { date: number; v: number }
-            >(`${storageArea}:count`);
-            await fakeBrowser.storage[storageArea].set({
-              count$: existing,
-            });
-
-            await item.setMeta(newFields);
-            const actual = await item.getMeta();
-
-            expect(actual).toEqual(expected);
-          });
-        });
-
-        describe('removeValue', () => {
-          it('should remove the key from storage', async () => {
-            const item = storage.defineItem(`${storageArea}:count`);
-            await fakeBrowser.storage[storageArea].set({ count: 456 });
-
-            await item.removeValue();
-            const actual = await item.getValue();
-
-            expect(actual).toBeNull();
-          });
-
-          it('should not remove the metadata by default', async () => {
-            const item = storage.defineItem(`${storageArea}:count`);
-            const expected = { v: 1 };
-            await fakeBrowser.storage[storageArea].set({
-              count$: expected,
-              count: 3,
-            });
-
-            await item.removeValue();
-            const actual = await item.getMeta();
-
-            expect(actual).toEqual(expected);
-          });
-
-          it('should remove the metadata when requested', async () => {
-            const item = storage.defineItem(`${storageArea}:count`);
-            await fakeBrowser.storage[storageArea].set({
-              count$: { v: 1 },
-              count: 3,
-            });
-
-            await item.removeValue({ removeMeta: true });
-            const actual = await item.getMeta();
-
-            expect(actual).toEqual({});
-          });
-        });
-
-        describe('removeMeta', () => {
-          it('should remove all metadata', async () => {
-            const item = storage.defineItem<number, { v: number }>(
-              `${storageArea}:count`,
-            );
-            await fakeBrowser.storage[storageArea].set({ count$: { v: 4 } });
-
-            await item.removeMeta();
-            const actual = await item.getMeta();
-
-            expect(actual).toEqual({});
-          });
-
-          it('should only remove specific properties', async () => {
-            const item = storage.defineItem<number, { v: number; d: number }>(
-              `${storageArea}:count`,
-            );
-            await fakeBrowser.storage[storageArea].set({
-              count$: { v: 4, d: Date.now() },
-            });
-
-            await item.removeMeta(['d']);
-            const actual = await item.getMeta();
-
-            expect(actual).toEqual({ v: 4 });
-          });
-        });
-
-        describe('watch', () => {
-          it("should not trigger if the changed key is different from the item's key", async () => {
-            const item = storage.defineItem(`${storageArea}:key`);
-            const cb = vi.fn();
-
-            item.watch(cb);
-            await storage.setItem(`${storageArea}:not-the-key`, '123');
-
-            expect(cb).not.toBeCalled();
-          });
-
-          it("should not trigger if the value doesn't change", async () => {
-            const item = storage.defineItem(`${storageArea}:key`);
-            const cb = vi.fn();
-            const value = '123';
-
-            await item.setValue(value);
-            item.watch(cb);
-            await item.setValue(value);
-
-            expect(cb).not.toBeCalled();
-          });
-
-          it('should call the callback when the value changes', async () => {
-            const item = storage.defineItem(`${storageArea}:key`);
-            const cb = vi.fn();
-            const newValue = '123';
-            const oldValue = null;
-
-            item.watch(cb);
-            await item.setValue(newValue);
-
-            expect(cb).toBeCalledTimes(1);
-            expect(cb).toBeCalledWith(newValue, oldValue);
-          });
-
-          it('should remove the listener when calling the returned function', async () => {
-            const item = storage.defineItem(`${storageArea}:key`);
-            const cb = vi.fn();
-
-            const unwatch = item.watch(cb);
-            unwatch();
-            await item.setValue('123');
-
-            expect(cb).not.toBeCalled();
-          });
-        });
-
-        describe('unwatch', () => {
-          it('should remove all watch listeners', async () => {
-            const item = storage.defineItem(`${storageArea}:key`);
-            const cb = vi.fn();
-
-            item.watch(cb);
-            storage.unwatch();
-            await item.setValue('123');
-
-            expect(cb).not.toBeCalled();
-          });
-        });
-      });
     },
   );
+
+  describe('defineItem', () => {
+    describe('versioning', () => {
+      it('should migrate values to the latest when a version upgrade is detected', async () => {
+        await fakeBrowser.storage.local.set({
+          count: 2,
+          count$: { v: 1 },
+        });
+        const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
+        const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
+
+        const item = storage.defineItem<number, { v: number }>(`local:count`, {
+          defaultValue: 0,
+          version: 3,
+          migrations: {
+            2: migrateToV2,
+            3: migrateToV3,
+          },
+        });
+        await waitForMigrations();
+
+        const actualValue = await item.getValue();
+        const actualMeta = await item.getMeta();
+
+        expect(actualValue).toEqual(12);
+        expect(actualMeta).toEqual({ v: 3 });
+
+        expect(migrateToV2).toBeCalledTimes(1);
+        expect(migrateToV2).toBeCalledWith(2);
+
+        expect(migrateToV3).toBeCalledTimes(1);
+        expect(migrateToV3).toBeCalledWith(4);
+      });
+
+      it("should not run migrations if the value doesn't exist yet", async () => {
+        const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
+        const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
+
+        const item = storage.defineItem<number, { v: number }>(`local:count`, {
+          defaultValue: 0,
+          version: 3,
+          migrations: {
+            2: migrateToV2,
+            3: migrateToV3,
+          },
+        });
+        await waitForMigrations();
+
+        const actualValue = await item.getValue();
+        const actualMeta = await item.getMeta();
+
+        expect(actualValue).toEqual(0);
+        expect(actualMeta).toEqual({});
+
+        expect(migrateToV2).not.toBeCalled();
+        expect(migrateToV3).not.toBeCalled();
+      });
+
+      it('should run the v2 migration when converting an unversioned item to a versioned one', async () => {
+        await fakeBrowser.storage.local.set({
+          count: 2,
+        });
+        const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
+
+        const item = storage.defineItem<number, { v: number }>(`local:count`, {
+          defaultValue: 0,
+          version: 2,
+          migrations: {
+            2: migrateToV2,
+          },
+        });
+        await waitForMigrations();
+
+        const actualValue = await item.getValue();
+        const actualMeta = await item.getMeta();
+
+        expect(actualValue).toEqual(4);
+        expect(actualMeta).toEqual({ v: 2 });
+
+        expect(migrateToV2).toBeCalledTimes(1);
+        expect(migrateToV2).toBeCalledWith(2);
+      });
+
+      it('should not run old migrations if the version is unchanged', async () => {
+        await fakeBrowser.storage.local.set({
+          count: 2,
+          count$: { v: 3 },
+        });
+        const migrateToV2 = vi.fn((oldCount) => oldCount * 2);
+        const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
+
+        storage.defineItem<number, { v: number }>(`local:count`, {
+          defaultValue: 0,
+          version: 3,
+          migrations: {
+            2: migrateToV2,
+            3: migrateToV3,
+          },
+        });
+        await waitForMigrations();
+
+        expect(migrateToV2).not.toBeCalled();
+        expect(migrateToV3).not.toBeCalled();
+      });
+
+      it('should skip missing migration functions', async () => {
+        await fakeBrowser.storage.local.set({
+          count: 2,
+          count$: { v: 0 },
+        });
+        const migrateToV1 = vi.fn((oldCount) => oldCount * 1);
+        const migrateToV3 = vi.fn((oldCount) => oldCount * 3);
+
+        const item = storage.defineItem<number, { v: number }>(`local:count`, {
+          defaultValue: 0,
+          version: 3,
+          migrations: {
+            1: migrateToV1,
+            3: migrateToV3,
+          },
+        });
+        await waitForMigrations();
+
+        const actualValue = await item.getValue();
+        const actualMeta = await item.getMeta();
+
+        expect(actualValue).toEqual(6);
+        expect(actualMeta).toEqual({ v: 3 });
+
+        expect(migrateToV1).toBeCalledTimes(1);
+        expect(migrateToV1).toBeCalledWith(2);
+
+        expect(migrateToV3).toBeCalledTimes(1);
+        expect(migrateToV3).toBeCalledWith(2);
+      });
+
+      it('should throw an error if the new version is less than the previous version', async () => {
+        const prevVersion = 2;
+        const nextVersion = 1;
+        await fakeBrowser.storage.local.set({
+          count: 0,
+          count$: { v: prevVersion },
+        });
+
+        const item = storage.defineItem(`local:count`, {
+          defaultValue: 0,
+          version: nextVersion,
+        });
+        await waitForMigrations();
+
+        await expect(item.migrate()).rejects.toThrow(
+          'Version downgrade detected (v2 -> v1) for "local:count"',
+        );
+      });
+    });
+
+    describe('getValue', () => {
+      it('should return the value from storage', async () => {
+        const expected = 2;
+        const item = storage.defineItem<number>(`local:count`);
+        await fakeBrowser.storage.local.set({ count: expected });
+
+        const actual = await item.getValue();
+
+        expect(actual).toBe(expected);
+      });
+
+      it('should return null if missing', async () => {
+        const item = storage.defineItem<number>(`local:count`);
+
+        const actual = await item.getValue();
+
+        expect(actual).toBeNull();
+      });
+
+      it('should return the provided default value if missing', async () => {
+        const expected = 0;
+        const item = storage.defineItem(`local:count`, {
+          defaultValue: expected,
+        });
+
+        const actual = await item.getValue();
+
+        expect(actual).toEqual(expected);
+      });
+    });
+
+    describe('getMeta', () => {
+      it('should return the value from storage at key+$', async () => {
+        const expected = { v: 2 };
+        const item = storage.defineItem<number, { v: number }>(`local:count`);
+        await fakeBrowser.storage.local.set({ count$: expected });
+
+        const actual = await item.getMeta();
+
+        expect(actual).toBe(expected);
+      });
+
+      it('should return an empty object if missing', async () => {
+        const expected = {};
+        const item = storage.defineItem<number, { v: number }>(`local:count`);
+
+        const actual = await item.getMeta();
+
+        expect(actual).toEqual(expected);
+      });
+    });
+
+    describe('setValue', () => {
+      it('should set the value in storage', async () => {
+        const expected = 1;
+        const item = storage.defineItem<number>(`local:count`);
+
+        await item.setValue(expected);
+        const actual = await item.getValue();
+
+        expect(actual).toBe(expected);
+      });
+
+      it.each([undefined, null])(
+        'should remove the value in storage when %s is passed in',
+        async (value) => {
+          const item = storage.defineItem<number>(`local:count`);
+
+          // @ts-expect-error: undefined is not assignable to null, but we're testing that case on purpose
+          await item.setValue(value);
+          const actual = await item.getValue();
+
+          expect(actual).toBeNull();
+        },
+      );
+    });
+
+    describe('setMeta', () => {
+      it('should set metadata at key+$', async () => {
+        const expected = { date: Date.now() };
+        const item = storage.defineItem<number, { date: number }>(
+          `local:count`,
+        );
+
+        await item.setMeta(expected);
+        const actual = await item.getMeta();
+
+        expect(actual).toEqual(expected);
+      });
+
+      it('should add to metadata if already present', async () => {
+        const existing = { v: 2 };
+        const newFields = { date: Date.now() };
+        const expected = { ...existing, ...newFields };
+        const item = storage.defineItem<number, { date: number; v: number }>(
+          `local:count`,
+        );
+        await fakeBrowser.storage.local.set({
+          count$: existing,
+        });
+
+        await item.setMeta(newFields);
+        const actual = await item.getMeta();
+
+        expect(actual).toEqual(expected);
+      });
+    });
+
+    describe('removeValue', () => {
+      it('should remove the key from storage', async () => {
+        const item = storage.defineItem(`local:count`);
+        await fakeBrowser.storage.local.set({ count: 456 });
+
+        await item.removeValue();
+        const actual = await item.getValue();
+
+        expect(actual).toBeNull();
+      });
+
+      it('should not remove the metadata by default', async () => {
+        const item = storage.defineItem(`local:count`);
+        const expected = { v: 1 };
+        await fakeBrowser.storage.local.set({
+          count$: expected,
+          count: 3,
+        });
+
+        await item.removeValue();
+        const actual = await item.getMeta();
+
+        expect(actual).toEqual(expected);
+      });
+
+      it('should remove the metadata when requested', async () => {
+        const item = storage.defineItem(`local:count`);
+        await fakeBrowser.storage.local.set({
+          count$: { v: 1 },
+          count: 3,
+        });
+
+        await item.removeValue({ removeMeta: true });
+        const actual = await item.getMeta();
+
+        expect(actual).toEqual({});
+      });
+    });
+
+    describe('removeMeta', () => {
+      it('should remove all metadata', async () => {
+        const item = storage.defineItem<number, { v: number }>(`local:count`);
+        await fakeBrowser.storage.local.set({ count$: { v: 4 } });
+
+        await item.removeMeta();
+        const actual = await item.getMeta();
+
+        expect(actual).toEqual({});
+      });
+
+      it('should only remove specific properties', async () => {
+        const item = storage.defineItem<number, { v: number; d: number }>(
+          `local:count`,
+        );
+        await fakeBrowser.storage.local.set({
+          count$: { v: 4, d: Date.now() },
+        });
+
+        await item.removeMeta(['d']);
+        const actual = await item.getMeta();
+
+        expect(actual).toEqual({ v: 4 });
+      });
+    });
+
+    describe('watch', () => {
+      it("should not trigger if the changed key is different from the item's key", async () => {
+        const item = storage.defineItem(`local:key`);
+        const cb = vi.fn();
+
+        item.watch(cb);
+        await storage.setItem(`local:not-the-key`, '123');
+
+        expect(cb).not.toBeCalled();
+      });
+
+      it("should not trigger if the value doesn't change", async () => {
+        const item = storage.defineItem(`local:key`);
+        const cb = vi.fn();
+        const value = '123';
+
+        await item.setValue(value);
+        item.watch(cb);
+        await item.setValue(value);
+
+        expect(cb).not.toBeCalled();
+      });
+
+      it('should call the callback when the value changes', async () => {
+        const item = storage.defineItem(`local:key`);
+        const cb = vi.fn();
+        const newValue = '123';
+        const oldValue = null;
+
+        item.watch(cb);
+        await item.setValue(newValue);
+
+        expect(cb).toBeCalledTimes(1);
+        expect(cb).toBeCalledWith(newValue, oldValue);
+      });
+
+      it('should use the default value for the newValue when the item is removed', async () => {
+        const defaultValue = 'default';
+        const item = storage.defineItem<string>(`local:key`, {
+          defaultValue,
+        });
+        const cb = vi.fn();
+        const oldValue = '123';
+        await item.setValue(oldValue);
+
+        item.watch(cb);
+        await item.removeValue();
+
+        expect(cb).toBeCalledTimes(1);
+        expect(cb).toBeCalledWith(defaultValue, oldValue);
+      });
+
+      it("should use the default value for the oldItem when the item didn't exist in storage yet", async () => {
+        const defaultValue = 'default';
+        const item = storage.defineItem<string>(`local:key`, {
+          defaultValue,
+        });
+        const cb = vi.fn();
+        const newValue = '123';
+        await item.removeValue();
+
+        item.watch(cb);
+        await item.setValue(newValue);
+
+        expect(cb).toBeCalledTimes(1);
+        expect(cb).toBeCalledWith(newValue, defaultValue);
+      });
+
+      it('should remove the listener when calling the returned function', async () => {
+        const item = storage.defineItem(`local:key`);
+        const cb = vi.fn();
+
+        const unwatch = item.watch(cb);
+        unwatch();
+        await item.setValue('123');
+
+        expect(cb).not.toBeCalled();
+      });
+    });
+
+    describe('unwatch', () => {
+      it('should remove all watch listeners', async () => {
+        const item = storage.defineItem(`local:key`);
+        const cb = vi.fn();
+
+        item.watch(cb);
+        storage.unwatch();
+        await item.setValue('123');
+
+        expect(cb).not.toBeCalled();
+      });
+    });
+
+    describe('defaultValue', () => {
+      it('should return the default value when provided', () => {
+        const defaultValue = 123;
+        const item = storage.defineItem(`local:test`, {
+          defaultValue,
+        });
+
+        expect(item.defaultValue).toBe(defaultValue);
+      });
+
+      it('should return null when not provided', () => {
+        const item = storage.defineItem<number>(`local:test`);
+
+        expect(item.defaultValue).toBeNull();
+      });
+    });
+
+    describe('types', () => {
+      it('should define a nullable value when options are not passed', () => {
+        const item = storage.defineItem<number>(`local:test`);
+        expectTypeOf(item).toEqualTypeOf<WxtStorageItem<number | null, {}>>();
+      });
+
+      it('should define a non-null value when options are passed with a nullish default value', () => {
+        const item = storage.defineItem(`local:test`, {
+          defaultValue: 123,
+        });
+        expectTypeOf(item).toEqualTypeOf<WxtStorageItem<number, {}>>();
+      });
+
+      it('should define a nullable value when options are passed with null default value', () => {
+        const item = storage.defineItem<number | null>(`local:test`, {
+          defaultValue: null,
+        });
+        expectTypeOf(item).toEqualTypeOf<WxtStorageItem<number | null, {}>>();
+      });
+    });
+  });
 });

src/browser.ts

@@ -51,7 +51,7 @@ export type {
   Identity,
   Idle,
   Management,
-  Manifest,
+  Manifest, // TODO: Export custom manifest types that are valid for both Chrome and Firefox.
   ContextMenus,
   Menus,
   NetworkStatus,

src/cli/__tests__/index.test.ts

@@ -1,29 +1,29 @@
 import { describe, it, vi, beforeEach, expect } from 'vitest';
-import { build } from '../core/build';
-import { createServer } from '../core/create-server';
-import { zip } from '../core/zip';
-import { prepare } from '../core/prepare';
-import { clean } from '../core/clean';
-import { initialize } from '../core/initialize';
+import { build } from '~/core/build';
+import { createServer } from '~/core/create-server';
+import { zip } from '~/core/zip';
+import { prepare } from '~/core/prepare';
+import { clean } from '~/core/clean';
+import { initialize } from '~/core/initialize';
 import { mock } from 'vitest-mock-extended';
 import consola from 'consola';
 
-vi.mock('../core/build');
+vi.mock('~/core/build');
 const buildMock = vi.mocked(build);
 
-vi.mock('../core/create-server');
+vi.mock('~/core/create-server');
 const createServerMock = vi.mocked(createServer);
 
-vi.mock('../core/zip');
+vi.mock('~/core/zip');
 const zipMock = vi.mocked(zip);
 
-vi.mock('../core/prepare');
+vi.mock('~/core/prepare');
 const prepareMock = vi.mocked(prepare);
 
-vi.mock('../core/clean');
+vi.mock('~/core/clean');
 const cleanMock = vi.mocked(clean);
 
-vi.mock('../core/initialize');
+vi.mock('~/core/initialize');
 const initializeMock = vi.mocked(initialize);
 
 consola.wrapConsole();
@@ -34,6 +34,10 @@ function mockArgv(...args: string[]) {
   process.argv = ['/bin/node', 'bin/wxt.mjs', ...args];
 }
 
+async function importCli() {
+  await import('~/cli');
+}
+
 describe('CLI', () => {
   beforeEach(() => {
     vi.resetModules();
@@ -44,14 +48,14 @@ describe('CLI', () => {
   describe('dev', () => {
     it('should not pass any config when no flags are passed', async () => {
       mockArgv();
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({});
     });
 
     it('should respect passing a custom root', async () => {
       mockArgv('path/to/root');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         root: 'path/to/root',
@@ -60,7 +64,7 @@ describe('CLI', () => {
 
     it('should respect a custom config file', async () => {
       mockArgv('-c', './path/to/config.ts');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         configFile: './path/to/config.ts',
@@ -69,7 +73,7 @@ describe('CLI', () => {
 
     it('should respect passing a custom mode', async () => {
       mockArgv('-m', 'development');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         mode: 'development',
@@ -78,7 +82,7 @@ describe('CLI', () => {
 
     it('should respect passing a custom browser', async () => {
       mockArgv('-b', 'firefox');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         browser: 'firefox',
@@ -87,7 +91,7 @@ describe('CLI', () => {
 
     it('should pass correct filtered entrypoints', async () => {
       mockArgv('-e', 'popup', '-e', 'options');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         filterEntrypoints: ['popup', 'options'],
@@ -96,7 +100,7 @@ describe('CLI', () => {
 
     it('should respect passing --mv2', async () => {
       mockArgv('--mv2');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         manifestVersion: 2,
@@ -105,7 +109,7 @@ describe('CLI', () => {
 
     it('should respect passing --mv3', async () => {
       mockArgv('--mv3');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         manifestVersion: 3,
@@ -114,7 +118,7 @@ describe('CLI', () => {
 
     it('should respect passing --debug', async () => {
       mockArgv('--debug');
-      await import('../cli');
+      await importCli();
 
       expect(createServerMock).toBeCalledWith({
         debug: true,
@@ -125,14 +129,14 @@ describe('CLI', () => {
   describe('build', () => {
     it('should not pass any config when no flags are passed', async () => {
       mockArgv('build');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({});
     });
 
     it('should respect passing a custom root', async () => {
       mockArgv('build', 'path/to/root');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         root: 'path/to/root',
@@ -141,7 +145,7 @@ describe('CLI', () => {
 
     it('should respect a custom config file', async () => {
       mockArgv('build', '-c', './path/to/config.ts');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         configFile: './path/to/config.ts',
@@ -150,7 +154,7 @@ describe('CLI', () => {
 
     it('should respect passing a custom mode', async () => {
       mockArgv('build', '-m', 'development');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         mode: 'development',
@@ -159,7 +163,7 @@ describe('CLI', () => {
 
     it('should respect passing a custom browser', async () => {
       mockArgv('build', '-b', 'firefox');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         browser: 'firefox',
@@ -168,7 +172,7 @@ describe('CLI', () => {
 
     it('should pass correct filtered entrypoints', async () => {
       mockArgv('build', '-e', 'popup', '-e', 'options');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         filterEntrypoints: ['popup', 'options'],
@@ -177,7 +181,7 @@ describe('CLI', () => {
 
     it('should respect passing --mv2', async () => {
       mockArgv('build', '--mv2');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         manifestVersion: 2,
@@ -186,7 +190,7 @@ describe('CLI', () => {
 
     it('should respect passing --mv3', async () => {
       mockArgv('build', '--mv3');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         manifestVersion: 3,
@@ -195,7 +199,7 @@ describe('CLI', () => {
 
     it('should include analysis in the build', async () => {
       mockArgv('build', '--analyze');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         analysis: {
@@ -206,7 +210,7 @@ describe('CLI', () => {
 
     it('should respect passing --debug', async () => {
       mockArgv('build', '--debug');
-      await import('../cli');
+      await importCli();
 
       expect(buildMock).toBeCalledWith({
         debug: true,
@@ -217,14 +221,14 @@ describe('CLI', () => {
   describe('zip', () => {
     it('should not pass any config when no flags are passed', async () => {
       mockArgv('zip');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({});
     });
 
     it('should respect passing a custom root', async () => {
       mockArgv('zip', 'path/to/root');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({
         root: 'path/to/root',
@@ -233,7 +237,7 @@ describe('CLI', () => {
 
     it('should respect a custom config file', async () => {
       mockArgv('zip', '-c', './path/to/config.ts');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({
         configFile: './path/to/config.ts',
@@ -242,7 +246,7 @@ describe('CLI', () => {
 
     it('should respect passing a custom mode', async () => {
       mockArgv('zip', '-m', 'development');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({
         mode: 'development',
@@ -251,7 +255,7 @@ describe('CLI', () => {
 
     it('should respect passing a custom browser', async () => {
       mockArgv('zip', '-b', 'firefox');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({
         browser: 'firefox',
@@ -260,7 +264,7 @@ describe('CLI', () => {
 
     it('should respect passing --mv2', async () => {
       mockArgv('zip', '--mv2');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({
         manifestVersion: 2,
@@ -269,7 +273,7 @@ describe('CLI', () => {
 
     it('should respect passing --mv3', async () => {
       mockArgv('zip', '--mv3');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({
         manifestVersion: 3,
@@ -278,7 +282,7 @@ describe('CLI', () => {
 
     it('should respect passing --debug', async () => {
       mockArgv('zip', '--debug');
-      await import('../cli');
+      await importCli();
 
       expect(zipMock).toBeCalledWith({
         debug: true,
@@ -289,14 +293,14 @@ describe('CLI', () => {
   describe('prepare', () => {
     it('should not pass any config when no flags are passed', async () => {
       mockArgv('prepare');
-      await import('../cli');
+      await importCli();
 
       expect(prepareMock).toBeCalledWith({});
     });
 
     it('should respect passing a custom root', async () => {
       mockArgv('prepare', 'path/to/root');
-      await import('../cli');
+      await importCli();
 
       expect(prepareMock).toBeCalledWith({
         root: 'path/to/root',
@@ -305,7 +309,7 @@ describe('CLI', () => {
 
     it('should respect a custom config file', async () => {
       mockArgv('prepare', '-c', './path/to/config.ts');
-      await import('../cli');
+      await importCli();
 
       expect(prepareMock).toBeCalledWith({
         configFile: './path/to/config.ts',
@@ -314,7 +318,7 @@ describe('CLI', () => {
 
     it('should respect passing --debug', async () => {
       mockArgv('prepare', '--debug');
-      await import('../cli');
+      await importCli();
 
       expect(prepareMock).toBeCalledWith({
         debug: true,
@@ -325,14 +329,14 @@ describe('CLI', () => {
   describe('clean', () => {
     it('should not pass any config when no flags are passed', async () => {
       mockArgv('clean');
-      await import('../cli');
+      await importCli();
 
       expect(cleanMock).toBeCalledWith(undefined);
     });
 
     it('should respect passing a custom root', async () => {
       mockArgv('clean', 'path/to/root');
-      await import('../cli');
+      await importCli();
 
       expect(cleanMock).toBeCalledWith('path/to/root');
     });
@@ -341,14 +345,14 @@ describe('CLI', () => {
   describe('init', () => {
     it('should not pass any options when no flags are passed', async () => {
       mockArgv('init');
-      await import('../cli');
+      await importCli();
 
       expect(initializeMock).toBeCalledWith({});
     });
 
     it('should respect the provided folder', async () => {
       mockArgv('init', 'path/to/folder');
-      await import('../cli');
+      await importCli();
 
       expect(initializeMock).toBeCalledWith({
         directory: 'path/to/folder',
@@ -357,7 +361,7 @@ describe('CLI', () => {
 
     it('should respect passing --template', async () => {
       mockArgv('init', '-t', 'vue');
-      await import('../cli');
+      await importCli();
 
       expect(initializeMock).toBeCalledWith({
         template: 'vue',
@@ -366,7 +370,7 @@ describe('CLI', () => {
 
     it('should respect passing --pm', async () => {
       mockArgv('init', '--pm', 'pnpm');
-      await import('../cli');
+      await importCli();
 
       expect(initializeMock).toBeCalledWith({
         packageManager: 'pnpm',

src/cli/cli-utils.ts

@@ -0,0 +1,102 @@
+import { CAC, Command } from 'cac';
+import consola, { LogLevels } from 'consola';
+import { printHeader } from '~/core/utils/log';
+import { formatDuration } from '~/core/utils/time';
+import { ValidationError } from '~/core/utils/validation';
+import { registerWxt } from '~/core/wxt';
+
+/**
+ * Wrap an action handler to add a timer, error handling, and maybe enable debug mode.
+ */
+export function wrapAction(
+  cb: (
+    ...args: any[]
+  ) => void | { isOngoing?: boolean } | Promise<void | { isOngoing?: boolean }>,
+  options?: {
+    disableFinishedLog?: boolean;
+  },
+) {
+  return async (...args: any[]) => {
+    // Enable consola's debug mode globally at the start of all commands when the `--debug` flag is
+    // passed
+    const isDebug = !!args.find((arg) => arg?.debug);
+    if (isDebug) {
+      consola.level = LogLevels.debug;
+    }
+
+    const startTime = Date.now();
+    try {
+      printHeader();
+
+      const status = await cb(...args);
+
+      if (!status?.isOngoing && !options?.disableFinishedLog)
+        consola.success(
+          `Finished in ${formatDuration(Date.now() - startTime)}`,
+        );
+    } catch (err) {
+      consola.fail(
+        `Command failed after ${formatDuration(Date.now() - startTime)}`,
+      );
+      if (err instanceof ValidationError) {
+        // Don't log these errors, they've already been logged
+      } else {
+        consola.error(err);
+      }
+      process.exit(1);
+    }
+  };
+}
+
+/**
+ * Array flags, when not passed, are either `undefined` or `[undefined]`. This function filters out
+ * the
+ */
+export function getArrayFromFlags<T>(
+  flags: any,
+  name: string,
+): T[] | undefined {
+  const array = [flags[name]].flat() as Array<T | undefined>;
+  const result = array.filter((item) => item != null) as T[];
+  return result.length ? result : undefined;
+}
+
+const aliasCommandNames = new Set<string>();
+/**
+ * @param base Command to add this one to
+ * @param name The command name to add
+ * @param alias The CLI tool being aliased
+ * @param bin The CLI tool binary name. Usually the same as the alias
+ * @param docsUrl URL to the docs for the aliased CLI tool
+ */
+export function createAliasedCommand(
+  base: CAC,
+  name: string,
+  alias: string,
+  bin: string,
+  docsUrl: string,
+) {
+  const aliasedCommand = base
+    .command(name, `Alias for ${alias} (${docsUrl})`)
+    .allowUnknownOptions()
+    .action(async () => {
+      try {
+        await registerWxt('build');
+
+        const args = process.argv.slice(
+          process.argv.indexOf(aliasedCommand.name) + 1,
+        );
+        const { execa } = await import('execa');
+        await execa(bin, args, {
+          stdio: 'inherit',
+        });
+      } catch {
+        // Let the other aliased CLI log errors, just exit
+        process.exit(1);
+      }
+    });
+  aliasCommandNames.add(aliasedCommand.name);
+}
+export function isAliasedCommand(command: Command | undefined): boolean {
+  return !!command && aliasCommandNames.has(command.name);
+}

src/cli/commands.ts

@@ -1,16 +1,12 @@
 import cac from 'cac';
-import { version } from '~/version';
 import { build, clean, createServer, initialize, prepare, zip } from '~/core';
-import consola, { LogLevels } from 'consola';
-import { printHeader } from '~/core/utils/log';
-import { formatDuration } from '~/core/utils/time';
-
-// TODO: Remove. See https://github.com/wxt-dev/wxt/issues/277
-process.env.VITE_CJS_IGNORE_WARNING = 'true';
+import {
+  createAliasedCommand,
+  getArrayFromFlags,
+  wrapAction,
+} from './cli-utils';
 
 const cli = cac('wxt');
-cli.help();
-cli.version(version);
 
 cli.option('--debug', 'enable debug mode');
 
@@ -139,53 +135,13 @@ cli
     ),
   );
 
-cli.parse(process.argv);
+// SUBMIT
+createAliasedCommand(
+  cli,
+  'submit',
+  'publish-extension',
+  'wxt-publish-extension',
+  'https://www.npmjs.com/publish-browser-extension',
+);
 
-/**
- * Wrap an action handler to add a timer, error handling, and maybe enable debug mode.
- */
-function wrapAction(
-  cb: (
-    ...args: any[]
-  ) => void | { isOngoing?: boolean } | Promise<void | { isOngoing?: boolean }>,
-  options?: {
-    disableFinishedLog?: boolean;
-  },
-) {
-  return async (...args: any[]) => {
-    // Enable consola's debug mode globally at the start of all commands when the `--debug` flag is
-    // passed
-    const isDebug = !!args.find((arg) => arg?.debug);
-    if (isDebug) {
-      consola.level = LogLevels.debug;
-    }
-
-    const startTime = Date.now();
-    try {
-      printHeader();
-
-      const status = await cb(...args);
-
-      if (!status?.isOngoing && !options?.disableFinishedLog)
-        consola.success(
-          `Finished in ${formatDuration(Date.now() - startTime)}`,
-        );
-    } catch (err) {
-      consola.fail(
-        `Command failed after ${formatDuration(Date.now() - startTime)}`,
-      );
-      consola.error(err);
-      process.exit(1);
-    }
-  };
-}
-
-/**
- * Array flags, when not passed, are either `undefined` or `[undefined]`. This function filters out
- * the
- */
-function getArrayFromFlags<T>(flags: any, name: string): T[] | undefined {
-  const array = [flags[name]].flat() as Array<T | undefined>;
-  const result = array.filter((item) => item != null) as T[];
-  return result.length ? result : undefined;
-}
+export default cli;

src/cli/index.ts

@@ -0,0 +1,19 @@
+import cli from './commands';
+import { version } from '~/version';
+import { isAliasedCommand } from './cli-utils';
+
+// TODO: Remove. See https://github.com/wxt-dev/wxt/issues/277
+process.env.VITE_CJS_IGNORE_WARNING = 'true';
+
+// Grab the command that we're trying to run
+cli.parse(process.argv, { run: false });
+
+// If it's not an alias, add the help and version options, then parse again
+if (!isAliasedCommand(cli.matchedCommand)) {
+  cli.help();
+  cli.version(version);
+  cli.parse(process.argv, { run: false });
+}
+
+// Run the alias or command
+await cli.runMatchedCommand();

src/client/content-scripts/content-script-context.ts

@@ -10,6 +10,29 @@ import { createLocationWatcher } from './location-watcher';
  *
  * It also provides several utilities like `ctx.setTimeout` and `ctx.setInterval` that should be used in
  * content scripts instead of `window.setTimeout` or `window.setInterval`.
+ *
+ * To create context for testing, you can use the class's constructor:
+ *
+ * ```ts
+ * import { ContentScriptContext } from 'wxt/client';
+ *
+ * test("storage listener should be removed when context is invalidated", () => {
+ *   const ctx = new ContentScriptContext('test');
+ *   const item = storage.defineItem("local:count", { defaultValue: 0 });
+ *   const watcher = vi.fn();
+ *
+ *   const unwatch = item.watch(watcher);
+ *   ctx.onInvalidated(unwatch); // Listen for invalidate here
+ *
+ *   await item.setValue(1);
+ *   expect(watcher).toBeCalledTimes(1);
+ *   expect(watcher).toBeCalledWith(1, 0);
+ *
+ *   ctx.notifyInvalidated(); // Use this function to invalidate the context
+ *   await item.setValue(2);
+ *   expect(watcher).toBeCalledTimes(1);
+ * });
+ * ```
  */
 export class ContentScriptContext implements AbortController {
   private static SCRIPT_STARTED_MESSAGE_TYPE = 'wxt:content-script-started';

src/client/content-scripts/custom-events.ts

@@ -15,10 +15,12 @@ export class WxtLocationChangeEvent extends Event {
  * Returns an event name unique to the extension and content script that's running.
  */
 export function getUniqueEventName(eventName: string): string {
-  // During the build process, __ENTRYPOINT__ is not defined when importing entrypoints to get their
-  // metadata.
+  // During the build process, import.meta.env is not defined when importing
+  // entrypoints to get their metadata.
   const entrypointName =
-    typeof __ENTRYPOINT__ === 'undefined' ? 'build' : __ENTRYPOINT__;
+    typeof import.meta.env === 'undefined'
+      ? 'build'
+      : import.meta.env.ENTRYPOINT;
 
   return `${browser.runtime.id}:${entrypointName}:${eventName}`;
 }

src/client/content-scripts/ui/__tests__/index.test.ts

@@ -367,7 +367,7 @@ describe('Content Script UIs', () => {
       });
     });
 
-    describe.todo('after', () => {
+    describe('after', () => {
       it('should append the UI after the anchor', () => {
         const ui = createIntegratedUi(ctx, {
           position: 'inline',

src/client/content-scripts/ui/index.ts

@@ -119,19 +119,18 @@ export async function createShadowRootUi<TMounted>(
   let mounted: TMounted;
 
   const mount = () => {
-    // Mount UI inside shadow root
-    mounted = options.onMount(uiContainer, shadow, shadowHost);
-
     // Add shadow root element to DOM
     mountUi(shadowHost, options);
     applyPosition(shadowHost, shadow.querySelector('html'), options);
+    // Mount UI inside shadow root
+    mounted = options.onMount(uiContainer, shadow, shadowHost);
   };
 
   const remove = () => {
-    // Detatch shadow root from DOM
-    shadowHost.remove();
     // Cleanup mounted state
     options.onRemove?.(mounted);
+    // Detatch shadow root from DOM
+    shadowHost.remove();
     // Remove children from uiContainer
     while (uiContainer.lastChild)
       uiContainer.removeChild(uiContainer.lastChild);
@@ -211,20 +210,16 @@ function mountUi(
       anchor.append(root);
       break;
     case 'first':
-      if (anchor.firstChild) {
-        anchor.insertBefore(root, anchor.firstChild);
-      } else {
-        anchor.append(root);
-      }
+      anchor.prepend(root);
       break;
     case 'replace':
       anchor.replaceWith(root);
       break;
     case 'after':
-      anchor.replaceWith(anchor, root);
+      anchor.parentElement?.insertBefore(root, anchor.nextElementSibling);
       break;
     case 'before':
-      anchor.replaceWith(root, anchor);
+      anchor.parentElement?.insertBefore(root, anchor);
       break;
     default:
       options.append(anchor, root);
@@ -236,7 +231,9 @@ function mountUi(
  * Load the CSS for the current entrypoint.
  */
 async function loadCss(): Promise<string> {
-  const url = browser.runtime.getURL(`/content-scripts/${__ENTRYPOINT__}.css`);
+  const url = browser.runtime.getURL(
+    `/content-scripts/${import.meta.env.ENTRYPOINT}.css`,
+  );
   try {
     const res = await fetch(url);
     return await res.text();

src/core/build.ts

@@ -1,5 +1,6 @@
 import { BuildOutput, InlineConfig } from '~/types';
-import { getInternalConfig, internalBuild } from './utils/building';
+import { internalBuild } from './utils/building';
+import { registerWxt } from './wxt';
 
 /**
  * Bundles the extension for production. Returns a promise of the build result. Discovers the `wxt.config.ts` file in
@@ -15,6 +16,7 @@ import { getInternalConfig, internalBuild } from './utils/building';
  * })
  */
 export async function build(config?: InlineConfig): Promise<BuildOutput> {
-  const internalConfig = await getInternalConfig(config ?? {}, 'build');
-  return await internalBuild(internalConfig);
+  await registerWxt('build', config);
+
+  return await internalBuild();
 }

src/core/builders/vite/index.ts

@@ -3,19 +3,22 @@ import {
   BuildStepOutput,
   Entrypoint,
   InlineConfig,
-  InternalConfig,
+  ResolvedConfig,
   UserConfig,
   VirtualEntrypointType,
   WxtBuilder,
   WxtBuilderServer,
 } from '~/types';
 import * as wxtPlugins from './plugins';
-import { getEntrypointBundlePath } from '~/core/utils/entrypoints';
+import {
+  getEntrypointBundlePath,
+  isHtmlEntrypoint,
+} from '~/core/utils/entrypoints';
 
 export async function createViteBuilder(
   inlineConfig: InlineConfig,
   userConfig: UserConfig,
-  wxtConfig: Omit<InternalConfig, 'builder'>,
+  wxtConfig: Omit<ResolvedConfig, 'builder'>,
 ): Promise<WxtBuilder> {
   const vite = await import('vite');
 
@@ -44,6 +47,10 @@ export async function createViteBuilder(
     if (config.build.minify == null && wxtConfig.command === 'serve') {
       config.build.minify = false;
     }
+    // Enable inline sourcemaps for the dev command (so content scripts have sourcemaps)
+    if (config.build.sourcemap == null && wxtConfig.command === 'serve') {
+      config.build.sourcemap = 'inline';
+    }
 
     config.plugins ??= [];
     config.plugins.push(
@@ -59,9 +66,10 @@ export async function createViteBuilder(
       wxtPlugins.noopBackground(),
       wxtPlugins.globals(wxtConfig),
       wxtPlugins.excludeBrowserPolyfill(wxtConfig),
+      wxtPlugins.defineImportMeta(),
     );
     if (wxtConfig.analysis.enabled) {
-      config.plugins.push(wxtPlugins.bundleAnalysis());
+      config.plugins.push(wxtPlugins.bundleAnalysis(wxtConfig));
     }
 
     return config;
@@ -71,23 +79,7 @@ export async function createViteBuilder(
    * Return the basic config for building an entrypoint in [lib mode](https://vitejs.dev/guide/build.html#library-mode).
    */
   const getLibModeConfig = (entrypoint: Entrypoint): vite.InlineConfig => {
-    let virtualEntrypointType: VirtualEntrypointType | undefined;
-    switch (entrypoint.type) {
-      case 'background':
-      case 'unlisted-script':
-        virtualEntrypointType = entrypoint.type;
-        break;
-      case 'content-script':
-        virtualEntrypointType =
-          entrypoint.options.world === 'MAIN'
-            ? 'content-script-main-world'
-            : 'content-script-isolated-world';
-        break;
-    }
-    const entry = virtualEntrypointType
-      ? `virtual:wxt-${virtualEntrypointType}?${entrypoint.inputPath}`
-      : entrypoint.inputPath;
-
+    const entry = getRollupEntry(entrypoint);
     const plugins: NonNullable<vite.UserConfig['plugins']> = [
       wxtPlugins.entrypointGroupGlobals(entrypoint),
     ];
@@ -144,6 +136,9 @@ export async function createViteBuilder(
    * Return the basic config for building multiple entrypoints in [multi-page mode](https://vitejs.dev/guide/build.html#multi-page-app).
    */
   const getMultiPageConfig = (entrypoints: Entrypoint[]): vite.InlineConfig => {
+    const htmlEntrypoints = new Set(
+      entrypoints.filter(isHtmlEntrypoint).map((e) => e.name),
+    );
     return {
       mode: wxtConfig.mode,
       plugins: [
@@ -153,14 +148,18 @@ export async function createViteBuilder(
       build: {
         rollupOptions: {
           input: entrypoints.reduce<Record<string, string>>((input, entry) => {
-            input[entry.name] = entry.inputPath;
+            input[entry.name] = getRollupEntry(entry);
             return input;
           }, {}),
           output: {
             // Include a hash to prevent conflicts
             chunkFileNames: 'chunks/[name]-[hash].js',
-            // Include a hash to prevent conflicts
-            entryFileNames: 'chunks/[name]-[hash].js',
+            entryFileNames: ({ name }) => {
+              // HTML main JS files go in the chunks folder
+              if (htmlEntrypoints.has(name)) return 'chunks/[name]-[hash].js';
+              // Scripts are output in the root folder
+              return '[name].js';
+            },
             // We can't control the "name", so we need a hash to prevent conflicts
             assetFileNames: 'assets/[name]-[hash].[ext]',
           },
@@ -230,6 +229,9 @@ export async function createViteBuilder(
         async listen() {
           await viteServer.listen(info.port);
         },
+        async close() {
+          await viteServer.close();
+        },
         transformHtml(...args) {
           return viteServer.transformIndexHtml(...args);
         },
@@ -256,3 +258,26 @@ function getBuildOutputChunks(
   if (Array.isArray(result)) return result.flatMap(({ output }) => output);
   return result.output;
 }
+
+/**
+ * Returns the input module ID (virtual or real file) for an entrypoint. The returned string should
+ * be passed as an input to rollup.
+ */
+function getRollupEntry(entrypoint: Entrypoint): string {
+  let virtualEntrypointType: VirtualEntrypointType | undefined;
+  switch (entrypoint.type) {
+    case 'background':
+    case 'unlisted-script':
+      virtualEntrypointType = entrypoint.type;
+      break;
+    case 'content-script':
+      virtualEntrypointType =
+        entrypoint.options.world === 'MAIN'
+          ? 'content-script-main-world'
+          : 'content-script-isolated-world';
+      break;
+  }
+  return virtualEntrypointType
+    ? `virtual:wxt-${virtualEntrypointType}?${entrypoint.inputPath}`
+    : entrypoint.inputPath;
+}

src/core/builders/vite/plugins/__tests__/devHtmlPrerender.test.ts

@@ -0,0 +1,64 @@
+import { describe, expect, it } from 'vitest';
+import { Window } from 'happy-dom';
+import { pointToDevServer } from '../devHtmlPrerender';
+import {
+  fakeDevServer,
+  fakeResolvedConfig,
+} from '~/core/utils/testing/fake-objects';
+import { normalizePath } from '~/core/utils/paths';
+import { resolve } from 'node:path';
+
+describe('Dev HTML Prerender Plugin', () => {
+  describe('pointToDevServer', () => {
+    it.each([
+      // File paths should be resolved
+      ['style.css', 'http://localhost:5173/entrypoints/popup/style.css'],
+      ['./style.css', 'http://localhost:5173/entrypoints/popup/style.css'],
+      ['../style.css', 'http://localhost:5173/entrypoints/style.css'],
+      ['~/assets/style.css', 'http://localhost:5173/assets/style.css'],
+      ['~~/assets/style.css', 'http://localhost:5173/assets/style.css'],
+      ['~local/style.css', 'http://localhost:5173/style.css'],
+      ['~absolute/style.css', 'http://localhost:5173/assets/style.css'],
+      ['~file', 'http://localhost:5173/example.css'],
+      // Absolute paths are loaded with the `/@fs/` base path
+      [
+        '~outside/test.css',
+        `http://localhost:5173/@fs${
+          process.platform === 'win32'
+            ? '/' + normalizePath(resolve('/some/non-root/test.css')) // "/D:/some/non-root/test.css"
+            : '/some/non-root/test.css'
+        }`,
+      ],
+      // URLs should not be changed
+      ['https://example.com/style.css', 'https://example.com/style.css'],
+    ])('should transform "%s" into "%s"', (input, expected) => {
+      const { document } = new Window({
+        url: 'http://localhost',
+      });
+      const root = '/some/root';
+      const config = fakeResolvedConfig({
+        root,
+        alias: {
+          '~local': '.',
+          '~absolute': `${root}/assets`,
+          '~file': `${root}/example.css`,
+          '~outside': `${root}/../non-root`,
+          '~~': root,
+          '~': root,
+        },
+      });
+      const server = fakeDevServer({
+        hostname: 'localhost',
+        port: 5173,
+        origin: 'http://localhost:5173',
+      });
+      const id = root + '/entrypoints/popup/index.html';
+
+      document.head.innerHTML = `<link rel="stylesheet" href="${input}" />`;
+      pointToDevServer(config, server, id, document as any, 'link', 'href');
+
+      const actual = document.querySelector('link')!;
+      expect(actual.getAttribute('href')).toBe(expected);
+    });
+  });
+});

src/core/builders/vite/plugins/bundleAnalysis.ts

@@ -1,12 +1,25 @@
 import type * as vite from 'vite';
-import { visualizer } from 'rollup-plugin-visualizer';
+import { visualizer } from '@aklinker1/rollup-plugin-visualizer';
+import { ResolvedConfig } from '~/types';
+import path from 'node:path';
 
 let increment = 0;
 
-export function bundleAnalysis(): vite.Plugin {
+export function bundleAnalysis(
+  config: Omit<ResolvedConfig, 'builder'>,
+): vite.Plugin {
   return visualizer({
-    emitFile: true,
     template: 'raw-data',
-    filename: `stats-${increment++}.json`,
-  }) as vite.Plugin;
+    filename: path.resolve(
+      config.analysis.outputDir,
+      `${config.analysis.outputName}-${increment++}.json`,
+    ),
+  });
+}
+
+/**
+ * @deprecated FOR TESTING ONLY.
+ */
+export function resetBundleIncrement() {
+  increment = 0;
 }

src/core/builders/vite/plugins/cssEntrypoints.ts

@@ -1,5 +1,5 @@
 import type * as vite from 'vite';
-import { Entrypoint, InternalConfig } from '~/types';
+import { Entrypoint, ResolvedConfig } from '~/types';
 import { getEntrypointBundlePath } from '~/core/utils/entrypoints';
 
 /**
@@ -14,7 +14,7 @@ import { getEntrypointBundlePath } from '~/core/utils/entrypoints';
  */
 export function cssEntrypoints(
   entrypoint: Entrypoint,
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.Plugin {
   return {
     name: 'wxt:css-entrypoint',

src/core/builders/vite/plugins/defineImportMeta.ts

@@ -0,0 +1,19 @@
+/**
+ * Overrides definitions for `import.meta.*`
+ *
+ * - `import.meta.url`: Without this, background service workers crash trying to access
+ *   `document.location`, see https://github.com/wxt-dev/wxt/issues/392
+ */
+export function defineImportMeta() {
+  return {
+    name: 'wxt:define',
+    config() {
+      return {
+        define: {
+          // This works for all extension contexts, including background service worker
+          'import.meta.url': 'self.location.href',
+        },
+      };
+    },
+  };
+}

src/core/builders/vite/plugins/devHtmlPrerender.ts

@@ -1,8 +1,9 @@
 import type * as vite from 'vite';
-import { InternalConfig } from '~/types';
+import { ResolvedConfig, WxtDevServer } from '~/types';
 import { getEntrypointName } from '~/core/utils/entrypoints';
 import { parseHTML } from 'linkedom';
-import { dirname, isAbsolute, relative, resolve } from 'node:path';
+import { dirname, relative, resolve } from 'node:path';
+import { normalizePath } from '~/core/utils/paths';
 
 // Cache the preamble script for all devHtmlPrerender plugins, not just one
 let reactRefreshPreamble = '';
@@ -11,12 +12,12 @@ let reactRefreshPreamble = '';
  * Pre-renders the HTML entrypoints when building the extension to connect to the dev server.
  */
 export function devHtmlPrerender(
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.PluginOption {
   const htmlReloadId = '@wxt/reload-html';
   const resolvedHtmlReloadId = resolve(
-    config.root,
-    'node_modules/wxt/dist/virtual/reload-html.js',
+    config.wxtModuleDir,
+    'dist/virtual/reload-html.js',
   );
   const virtualReactRefreshId = '@wxt/virtual-react-refresh';
   const resolvedVirtualReactRefreshId = '\0' + virtualReactRefreshId;
@@ -47,25 +48,10 @@ export function devHtmlPrerender(
 
         const { document } = parseHTML(code);
 
-        const pointToDevServer = (
-          querySelector: string,
-          attr: string,
-        ): void => {
-          document.querySelectorAll(querySelector).forEach((element) => {
-            const src = element.getAttribute(attr);
-            if (!src) return;
-
-            if (isAbsolute(src)) {
-              element.setAttribute(attr, server.origin + src);
-            } else if (src.startsWith('.')) {
-              const abs = resolve(dirname(id), src);
-              const pathname = relative(config.root, abs);
-              element.setAttribute(attr, `${server.origin}/${pathname}`);
-            }
-          });
-        };
-        pointToDevServer('script[type=module]', 'src');
-        pointToDevServer('link[rel=stylesheet]', 'href');
+        const _pointToDevServer = (querySelector: string, attr: string) =>
+          pointToDevServer(config, server, id, document, querySelector, attr);
+        _pointToDevServer('script[type=module]', 'src');
+        _pointToDevServer('link[rel=stylesheet]', 'href');
 
         // Add a script to add page reloading
         const reloader = document.createElement('script');
@@ -146,3 +132,63 @@ export function devHtmlPrerender(
     },
   ];
 }
+
+export function pointToDevServer(
+  config: Omit<ResolvedConfig, 'builder'>,
+  server: WxtDevServer,
+  id: string,
+  document: Document,
+  querySelector: string,
+  attr: string,
+) {
+  document.querySelectorAll(querySelector).forEach((element) => {
+    const src = element.getAttribute(attr);
+    if (!src || isUrl(src)) return;
+
+    let resolvedAbsolutePath: string | undefined;
+
+    // Check if src uses a project alias
+    const matchingAlias = Object.entries(config.alias).find(([key]) =>
+      src.startsWith(key),
+    );
+    if (matchingAlias) {
+      // Matches a import alias
+      const [alias, replacement] = matchingAlias;
+      resolvedAbsolutePath = resolve(
+        config.root,
+        src.replace(alias, replacement),
+      );
+    } else {
+      // Some file path relative to the HTML file
+      resolvedAbsolutePath = resolve(dirname(id), src);
+    }
+
+    // Apply the final file path
+    if (resolvedAbsolutePath) {
+      const relativePath = normalizePath(
+        relative(config.root, resolvedAbsolutePath),
+      );
+
+      if (relativePath.startsWith('.')) {
+        // Outside the config.root directory, serve the absolute path
+        let path = normalizePath(resolvedAbsolutePath);
+        // Add "/" to start of windows paths ("D:/some/path" -> "/D:/some/path")
+        if (!path.startsWith('/')) path = '/' + path;
+        element.setAttribute(attr, `${server.origin}/@fs${path}`);
+      } else {
+        // Inside the project, use relative path
+        const url = new URL(relativePath, server.origin);
+        element.setAttribute(attr, url.href);
+      }
+    }
+  });
+}
+
+function isUrl(str: string): boolean {
+  try {
+    new URL(str);
+    return true;
+  } catch {
+    return false;
+  }
+}

src/core/builders/vite/plugins/devServerGlobals.ts

@@ -1,11 +1,11 @@
 import { Plugin } from 'vite';
-import { InternalConfig } from '~/types';
+import { ResolvedConfig } from '~/types';
 
 /**
  * Defines global constants about the dev server. Helps scripts connect to the server's web socket.
  */
 export function devServerGlobals(
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): Plugin {
   return {
     name: 'wxt:dev-server-globals',

src/core/builders/vite/plugins/download.ts

@@ -1,5 +1,5 @@
 import { Plugin } from 'vite';
-import { InternalConfig } from '~/types';
+import { ResolvedConfig } from '~/types';
 import { fetchCached } from '~/core/utils/network';
 
 /**
@@ -9,7 +9,7 @@ import { fetchCached } from '~/core/utils/network';
  * @example
  * import "url:https://google-tagmanager.com/gtag?id=XYZ";
  */
-export function download(config: Omit<InternalConfig, 'builder'>): Plugin {
+export function download(config: Omit<ResolvedConfig, 'builder'>): Plugin {
   return {
     name: 'wxt:download',
     resolveId(id) {

src/core/builders/vite/plugins/entrypointGroupGlobals.ts

@@ -14,7 +14,7 @@ export function entrypointGroupGlobals(
       const define: vite.InlineConfig['define'] = {};
       let name = Array.isArray(entrypointGroup) ? 'html' : entrypointGroup.name;
       for (const global of getEntrypointGlobals(name)) {
-        define[global.name] = JSON.stringify(global.value);
+        define[`import.meta.env.${global.name}`] = JSON.stringify(global.value);
       }
       return {
         define,

src/core/builders/vite/plugins/excludeBrowserPolyfill.ts

@@ -1,4 +1,4 @@
-import { InternalConfig } from '~/types';
+import { ResolvedConfig } from '~/types';
 import type * as vite from 'vite';
 
 /**
@@ -7,7 +7,7 @@ import type * as vite from 'vite';
  * virtual module.
  */
 export function excludeBrowserPolyfill(
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.Plugin {
   const virtualId = 'virtual:wxt-webextension-polyfill-disabled';
 

src/core/builders/vite/plugins/globals.ts

@@ -1,16 +1,16 @@
 import type * as vite from 'vite';
-import { InternalConfig } from '~/types';
+import { ResolvedConfig } from '~/types';
 import { getGlobals } from '~/core/utils/globals';
 
 export function globals(
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.PluginOption {
   return {
     name: 'wxt:globals',
     config() {
       const define: vite.InlineConfig['define'] = {};
       for (const global of getGlobals(config)) {
-        define[global.name] = JSON.stringify(global.value);
+        define[`import.meta.env.${global.name}`] = JSON.stringify(global.value);
       }
       return {
         define,

src/core/builders/vite/plugins/index.ts

@@ -12,3 +12,4 @@ export * from './globals';
 export * from './webextensionPolyfillMock';
 export * from './excludeBrowserPolyfill';
 export * from './entrypointGroupGlobals';
+export * from './defineImportMeta';

src/core/builders/vite/plugins/multipageMove.ts

@@ -1,5 +1,5 @@
 import type * as vite from 'vite';
-import { Entrypoint, InternalConfig } from '~/types';
+import { Entrypoint, ResolvedConfig } from '~/types';
 import { dirname, extname, resolve, join } from 'node:path';
 import { getEntrypointBundlePath } from '~/core/utils/entrypoints';
 import fs, { ensureDir } from 'fs-extra';
@@ -20,7 +20,7 @@ import { normalizePath } from '~/core/utils/paths';
  */
 export function multipageMove(
   entrypoints: Entrypoint[],
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.Plugin {
   return {
     name: 'wxt:multipage-move',

src/core/builders/vite/plugins/tsconfigPaths.ts

@@ -1,8 +1,8 @@
-import { InternalConfig } from '~/types';
+import { ResolvedConfig } from '~/types';
 import type * as vite from 'vite';
 
 export function tsconfigPaths(
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.Plugin {
   return {
     name: 'wxt:aliases',

src/core/builders/vite/plugins/unimport.ts

@@ -1,6 +1,5 @@
 import { createUnimport } from 'unimport';
-import { InternalConfig } from '~/types';
-import { getUnimportOptions } from '~/core/utils/unimport';
+import { ResolvedConfig } from '~/types';
 import type * as vite from 'vite';
 import { extname } from 'path';
 
@@ -17,9 +16,9 @@ const ENABLED_EXTENSIONS = new Set([
  * Inject any global imports defined by unimport
  */
 export function unimport(
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.PluginOption {
-  const options = getUnimportOptions(config);
+  const options = config.imports;
   if (options === false) return [];
 
   const unimport = createUnimport(options);
@@ -36,7 +35,11 @@ export function unimport(
       // Don't transform non-js files
       if (!ENABLED_EXTENSIONS.has(extname(id))) return;
 
-      return unimport.injectImports(code, id);
+      const injected = await unimport.injectImports(code, id);
+      return {
+        code: injected.code,
+        map: injected.s.generateMap({ hires: 'boundary', source: id }),
+      };
     },
   };
 }

src/core/builders/vite/plugins/virtualEntrypoint.ts

@@ -1,5 +1,5 @@
 import { Plugin } from 'vite';
-import { InternalConfig, VirtualEntrypointType } from '~/types';
+import { ResolvedConfig, VirtualEntrypointType } from '~/types';
 import fs from 'fs-extra';
 import { resolve } from 'path';
 import { normalizePath } from '~/core/utils/paths';
@@ -9,7 +9,7 @@ import { normalizePath } from '~/core/utils/paths';
  */
 export function virtualEntrypoint(
   type: VirtualEntrypointType,
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): Plugin {
   const virtualId = `virtual:wxt-${type}?`;
   const resolvedVirtualId = `\0${virtualId}`;
@@ -30,10 +30,7 @@ export function virtualEntrypoint(
 
       const inputPath = id.replace(resolvedVirtualId, '');
       const template = await fs.readFile(
-        resolve(
-          config.root,
-          `node_modules/wxt/dist/virtual/${type}-entrypoint.js`,
-        ),
+        resolve(config.wxtModuleDir, `dist/virtual/${type}-entrypoint.js`),
         'utf-8',
       );
       return template.replace(`virtual:user-${type}`, inputPath);

src/core/builders/vite/plugins/webextensionPolyfillMock.ts

@@ -1,6 +1,6 @@
 import path from 'node:path';
 import type * as vite from 'vite';
-import { InternalConfig } from '~/types';
+import { ResolvedConfig } from '~/types';
 
 /**
  * Mock `webextension-polyfill` by inlining all dependencies that import it and adding a custom
@@ -16,7 +16,7 @@ import { InternalConfig } from '~/types';
  * `npm list` and inline them automatically.
  */
 export function webextensionPolyfillMock(
-  config: Omit<InternalConfig, 'builder'>,
+  config: Omit<ResolvedConfig, 'builder'>,
 ): vite.PluginOption {
   return {
     name: 'wxt:testing-inline-deps',
@@ -26,8 +26,8 @@ export function webextensionPolyfillMock(
           alias: {
             // Alias to use a mocked version of the polyfill
             'webextension-polyfill': path.resolve(
-              config.root,
-              'node_modules/wxt/dist/virtual/mock-browser',
+              config.wxtModuleDir,
+              'dist/virtual/mock-browser',
             ),
           },
         },

src/core/create-server.ts

@@ -2,14 +2,12 @@ import {
   BuildStepOutput,
   EntrypointGroup,
   InlineConfig,
-  InternalConfig,
   ServerInfo,
   WxtDevServer,
 } from '~/types';
 import {
   getEntrypointBundlePath,
-  getEntrypointOutputFile,
-  resolvePerBrowserOption,
+  isHtmlEntrypoint,
 } from '~/core/utils/entrypoints';
 import {
   getContentScriptCssFiles,
@@ -17,7 +15,6 @@ import {
 } from '~/core/utils/manifest';
 import {
   internalBuild,
-  getInternalConfig,
   detectDevChanges,
   rebuild,
   findEntrypoints,
@@ -27,6 +24,9 @@ import { consola } from 'consola';
 import { Mutex } from 'async-mutex';
 import pc from 'picocolors';
 import { relative } from 'node:path';
+import { registerWxt, wxt } from './wxt';
+import { unnormalizePath } from './utils/paths';
+import { mapWxtOptionsToRegisteredContentScript } from './utils/content-scripts';
 
 /**
  * Creates a dev server and pre-builds all the files that need to exist before loading the extension.
@@ -49,28 +49,60 @@ export async function createServer(
     origin,
   };
 
+  const buildAndOpenBrowser = async () => {
+    // Build after starting the dev server so it can be used to transform HTML files
+    server.currentOutput = await internalBuild();
+
+    // Add file watchers for files not loaded by the dev server. See
+    // https://github.com/wxt-dev/wxt/issues/428#issuecomment-1944731870
+    try {
+      server.watcher.add(getExternalOutputDependencies(server));
+    } catch (err) {
+      wxt.config.logger.warn('Failed to register additional file paths:', err);
+    }
+
+    // Open browser after everything is ready to go.
+    await runner.openBrowser();
+  };
+
+  /**
+   * Stops the previous runner, grabs the latest config, and recreates the runner.
+   */
+  const closeAndRecreateRunner = async () => {
+    await runner.closeBrowser();
+    await wxt.reloadConfig();
+    runner = await createExtensionRunner();
+  };
+
   // Server instance must be created first so its reference can be added to the internal config used
   // to pre-render entrypoints
   const server: WxtDevServer = {
     ...serverInfo,
-    watcher: undefined as any, // Filled out later down below
-    ws: undefined as any, // Filled out later down below
-    currentOutput: undefined as any, // Filled out later down below
+    get watcher() {
+      return builderServer.watcher;
+    },
+    get ws() {
+      return builderServer.ws;
+    },
+    currentOutput: undefined,
     async start() {
       await builderServer.listen();
-      config.logger.success(`Started dev server @ ${serverInfo.origin}`);
-
-      // Build after starting the dev server so it can be used to transform HTML files
-      server.currentOutput = await internalBuild(config);
-
-      // Open browser after everything is ready to go.
-      await runner.openBrowser(config);
+      wxt.logger.success(`Started dev server @ ${serverInfo.origin}`);
+      await buildAndOpenBrowser();
+    },
+    async stop() {
+      await runner.closeBrowser();
+      await builderServer.close();
+    },
+    async restart() {
+      await closeAndRecreateRunner();
+      await buildAndOpenBrowser();
     },
     transformHtml(url, html, originalUrl) {
       return builderServer.transformHtml(url, html, originalUrl);
     },
-    reloadContentScript(contentScript) {
-      server.ws.send('wxt:reload-content-script', contentScript);
+    reloadContentScript(payload) {
+      server.ws.send('wxt:reload-content-script', payload);
     },
     reloadPage(path) {
       server.ws.send('wxt:reload-page', path);
@@ -78,34 +110,28 @@ export async function createServer(
     reloadExtension() {
       server.ws.send('wxt:reload-extension');
     },
+    async restartBrowser() {
+      await closeAndRecreateRunner();
+      await runner.openBrowser();
+    },
   };
 
-  const getLatestConfig = () =>
-    getInternalConfig(inlineConfig ?? {}, 'serve', server);
-  let config = await getLatestConfig();
+  await registerWxt('serve', inlineConfig, server);
 
-  const [runner, builderServer] = await Promise.all([
-    createExtensionRunner(config),
-    config.builder.createServer(server),
+  let [runner, builderServer] = await Promise.all([
+    createExtensionRunner(),
+    wxt.config.builder.createServer(server),
   ]);
 
-  server.watcher = builderServer.watcher;
-  server.ws = builderServer.ws;
-
   // Register content scripts for the first time after the background starts up since they're not
   // listed in the manifest
   server.ws.on('wxt:background-initialized', () => {
-    reloadContentScripts(server.currentOutput.steps, config, server);
+    if (server.currentOutput == null) return;
+    reloadContentScripts(server.currentOutput.steps, server);
   });
 
   // Listen for file changes and reload different parts of the extension accordingly
-  const reloadOnChange = createFileReloader({
-    server,
-    getLatestConfig,
-    updateConfig(newConfig) {
-      config = newConfig;
-    },
-  });
+  const reloadOnChange = createFileReloader(server);
   server.watcher.on('all', reloadOnChange);
 
   return server;
@@ -120,49 +146,50 @@ async function getPort(): Promise<number> {
  * Returns a function responsible for reloading different parts of the extension when a file
  * changes.
  */
-function createFileReloader(options: {
-  server: WxtDevServer;
-  getLatestConfig: () => Promise<InternalConfig>;
-  updateConfig: (config: InternalConfig) => void;
-}) {
-  const { server, getLatestConfig, updateConfig } = options;
+function createFileReloader(server: WxtDevServer) {
   const fileChangedMutex = new Mutex();
   const changeQueue: Array<[string, string]> = [];
 
   return async (event: string, path: string) => {
-    const config = await getLatestConfig();
-    updateConfig(config);
+    await wxt.reloadConfig();
 
     // Here, "path" is a non-normalized path (ie: C:\\users\\... instead of C:/users/...)
-    if (path.startsWith(config.outBaseDir)) return;
+    if (path.startsWith(wxt.config.outBaseDir)) return;
     changeQueue.push([event, path]);
 
     await fileChangedMutex.runExclusive(async () => {
-      const fileChanges = changeQueue.splice(0, changeQueue.length);
+      if (server.currentOutput == null) return;
+
+      const fileChanges = changeQueue
+        .splice(0, changeQueue.length)
+        .map(([_, file]) => file);
       if (fileChanges.length === 0) return;
 
       const changes = detectDevChanges(fileChanges, server.currentOutput);
       if (changes.type === 'no-change') return;
 
+      if (changes.type === 'full-restart') {
+        wxt.logger.info('Config changed, restarting server...');
+        server.restart();
+        return;
+      }
+
+      if (changes.type === 'browser-restart') {
+        wxt.logger.info('Runner config changed, restarting browser...');
+        server.restartBrowser();
+        return;
+      }
+
       // Log the entrypoints that were effected
-      config.logger.info(
-        `Changed: ${Array.from(new Set(fileChanges.map((change) => change[1])))
-          .map((file) => pc.dim(relative(config.root, file)))
+      wxt.logger.info(
+        `Changed: ${Array.from(new Set(fileChanges))
+          .map((file) => pc.dim(relative(wxt.config.root, file)))
           .join(', ')}`,
       );
-      const rebuiltNames = changes.rebuildGroups
-        .flat()
-        .map((entry) => {
-          return pc.cyan(
-            relative(config.outDir, getEntrypointOutputFile(entry, '')),
-          );
-        })
-        .join(pc.dim(', '));
 
       // Rebuild entrypoints on change
-      const allEntrypoints = await findEntrypoints(config);
+      const allEntrypoints = await findEntrypoints();
       const { output: newOutput } = await rebuild(
-        config,
         allEntrypoints,
         // TODO: this excludes new entrypoints, so they're not built until the dev command is restarted
         changes.rebuildGroups,
@@ -174,15 +201,23 @@ function createFileReloader(options: {
       switch (changes.type) {
         case 'extension-reload':
           server.reloadExtension();
+          consola.success(`Reloaded extension`);
           break;
         case 'html-reload':
-          reloadHtmlPages(changes.rebuildGroups, server, config);
+          const { reloadedNames } = reloadHtmlPages(
+            changes.rebuildGroups,
+            server,
+          );
+          consola.success(`Reloaded: ${getFilenameList(reloadedNames)}`);
           break;
         case 'content-script-reload':
-          reloadContentScripts(changes.changedSteps, config, server);
+          reloadContentScripts(changes.changedSteps, server);
+          const rebuiltNames = changes.rebuildGroups
+            .flat()
+            .map((entry) => entry.name);
+          consola.success(`Reloaded: ${getFilenameList(rebuiltNames)}`);
           break;
       }
-      consola.success(`Reloaded: ${rebuiltNames}`);
     });
   };
 }
@@ -190,35 +225,25 @@ function createFileReloader(options: {
 /**
  * From the server, tell the client to reload content scripts from the provided build step outputs.
  */
-function reloadContentScripts(
-  steps: BuildStepOutput[],
-  config: InternalConfig,
-  server: WxtDevServer,
-) {
-  if (config.manifestVersion === 3) {
+function reloadContentScripts(steps: BuildStepOutput[], server: WxtDevServer) {
+  if (wxt.config.manifestVersion === 3) {
     steps.forEach((step) => {
+      if (server.currentOutput == null) return;
+
       const entry = step.entrypoints;
       if (Array.isArray(entry) || entry.type !== 'content-script') return;
 
-      const js = [getEntrypointBundlePath(entry, config.outDir, '.js')];
+      const js = [getEntrypointBundlePath(entry, wxt.config.outDir, '.js')];
       const cssMap = getContentScriptsCssMap(server.currentOutput, [entry]);
       const css = getContentScriptCssFiles([entry], cssMap);
 
       server.reloadContentScript({
-        allFrames: resolvePerBrowserOption(
-          entry.options.allFrames,
-          config.browser,
+        registration: entry.options.registration,
+        contentScript: mapWxtOptionsToRegisteredContentScript(
+          entry.options,
+          js,
+          css,
         ),
-        excludeMatches: resolvePerBrowserOption(
-          entry.options.excludeMatches,
-          config.browser,
-        ),
-        matches: resolvePerBrowserOption(entry.options.matches, config.browser),
-        runAt: resolvePerBrowserOption(entry.options.runAt, config.browser),
-        // @ts-expect-error: Chrome accepts this, not typed in webextension-polyfill (https://developer.chrome.com/docs/extensions/reference/scripting/#type-RegisteredContentScript)
-        world: resolvePerBrowserOption(entry.options.world, config.browser),
-        js,
-        css,
       });
     });
   } else {
@@ -229,10 +254,51 @@ function reloadContentScripts(
 function reloadHtmlPages(
   groups: EntrypointGroup[],
   server: WxtDevServer,
-  config: InternalConfig,
-) {
-  groups.flat().forEach((entry) => {
-    const path = getEntrypointBundlePath(entry, config.outDir, '.html');
+): { reloadedNames: string[] } {
+  // groups might contain other files like background/content scripts, and we only care about the HTMl pages
+  const htmlEntries = groups.flat().filter(isHtmlEntrypoint);
+
+  htmlEntries.forEach((entry) => {
+    const path = getEntrypointBundlePath(entry, wxt.config.outDir, '.html');
     server.reloadPage(path);
   });
+
+  return {
+    reloadedNames: htmlEntries.map((entry) => entry.name),
+  };
+}
+
+function getFilenameList(names: string[]): string {
+  return names
+    .map((name) => {
+      return pc.cyan(name);
+    })
+    .join(pc.dim(', '));
+}
+
+/**
+ * Based on the current build output, return a list of files that are:
+ * 1. Not in node_modules
+ * 2. Not inside project root
+ */
+function getExternalOutputDependencies(server: WxtDevServer) {
+  return (
+    server.currentOutput?.steps
+      .flatMap((step, i) => {
+        if (Array.isArray(step.entrypoints) && i === 0) {
+          // Dev server is already watching all HTML/esm files
+          return [];
+        }
+
+        return step.chunks.flatMap((chunk) => {
+          if (chunk.type === 'asset') return [];
+          return chunk.moduleIds;
+        });
+      })
+      .filter(
+        (file) => !file.includes('node_modules') && !file.startsWith('\x00'),
+      )
+      .map(unnormalizePath)
+      .filter((file) => !file.startsWith(wxt.config.root)) ?? []
+  );
 }

src/core/initialize.ts

@@ -90,26 +90,25 @@ interface Template {
 
 async function listTemplates(): Promise<Template[]> {
   try {
-    const res = await fetch(
-      'https://api.github.com/repos/wxt-dev/wxt/contents/templates',
-      {
-        headers: {
-          Accept: 'application/vnd.github+json',
-          'X-GitHub-Api-Version': '2022-11-28',
-        },
-      },
-    );
+    const res = await fetch('https://ungh.cc/repos/wxt-dev/wxt/files/main');
     if (res.status >= 300)
       throw Error(`Request failed with status ${res.status} ${res.statusText}`);
 
-    const data = (await res.json()) as Array<{
-      type: 'file' | 'dir';
-      name: string;
-      path: string;
-    }>;
-    return data
-      .filter((item: any) => item.type === 'dir')
-      .map((item) => ({ name: item.name, path: item.path }))
+    const data = (await res.json()) as {
+      meta: {
+        sha: string;
+      };
+      files: Array<{
+        path: string;
+        mode: string;
+        sha: string;
+        size: number;
+      }>;
+    };
+    return data.files
+      .map((item) => item.path.match(/templates\/(.+)\/package\.json/)?.[1])
+      .filter((name) => name != null)
+      .map((name) => ({ name: name!, path: `templates/${name}` }))
       .sort((l, r) => {
         const lWeight = TEMPLATE_SORT_WEIGHT[l.name] ?? Number.MAX_SAFE_INTEGER;
         const rWeight = TEMPLATE_SORT_WEIGHT[r.name] ?? Number.MAX_SAFE_INTEGER;

src/core/package-managers/__tests__/bun.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, it } from 'vitest';
+import path from 'node:path';
+import { bun } from '../bun';
+
+const cwd = path.resolve(__dirname, 'fixtures/bun-project');
+
+describe.skipIf(() => process.platform === 'win32')(
+  'Bun Package Management Utils',
+  () => {
+    describe('listDependencies', () => {
+      it('should list direct dependencies', async () => {
+        const actual = await bun.listDependencies({ cwd });
+        expect(actual).toEqual([
+          { name: 'flatten', version: '1.0.3' },
+          { name: 'mime-types', version: '2.1.35' },
+        ]);
+      });
+
+      it('should list all dependencies', async () => {
+        const actual = await bun.listDependencies({ cwd, all: true });
+        expect(actual).toEqual([
+          { name: 'flatten', version: '1.0.3' },
+          { name: 'mime-db', version: '1.52.0' },
+          { name: 'mime-types', version: '2.1.35' },
+        ]);
+      });
+    });
+  },
+);

src/core/package-managers/__tests__/fixtures/bun-project/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "bun-ls",
+  "dependencies": {
+    "mime-types": "2.1.35"
+  },
+  "devDependencies": {
+    "flatten": "1.0.3"
+  }
+}

src/core/package-managers/__tests__/fixtures/npm-project/package-lock.json

@@ -0,0 +1,42 @@
+{
+  "name": "npm-ls",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "npm-ls",
+      "dependencies": {
+        "mime-types": "2.1.35"
+      },
+      "devDependencies": {
+        "flatten": "1.0.3"
+      }
+    },
+    "node_modules/flatten": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/flatten/-/flatten-1.0.3.tgz",
+      "integrity": "sha512-dVsPA/UwQ8+2uoFe5GHtiBMu48dWLTdsuEd7CKGlZlD78r1TTWBvDuFaFGKCo/ZfEr95Uk56vZoX86OsHkUeIg==",
+      "deprecated": "flatten is deprecated in favor of utility frameworks such as lodash.",
+      "dev": true
+    },
+    "node_modules/mime-db": {
+      "version": "1.52.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
+      "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/mime-types": {
+      "version": "2.1.35",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
+      "integrity": "sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==",
+      "dependencies": {
+        "mime-db": "1.52.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    }
+  }
+}

src/core/package-managers/__tests__/fixtures/npm-project/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "npm-ls",
+  "dependencies": {
+    "mime-types": "2.1.35"
+  },
+  "devDependencies": {
+    "flatten": "1.0.3"
+  }
+}

src/core/package-managers/__tests__/fixtures/pnpm-project/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "pnpm-ls",
+  "dependencies": {
+    "mime-types": "2.1.35"
+  },
+  "devDependencies": {
+    "flatten": "1.0.3"
+  }
+}

src/core/package-managers/__tests__/fixtures/pnpm-project/pnpm-lock.yaml

@@ -0,0 +1,34 @@
+lockfileVersion: '6.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+dependencies:
+  mime-types:
+    specifier: 2.1.35
+    version: 2.1.35
+
+devDependencies:
+  flatten:
+    specifier: 1.0.3
+    version: 1.0.3
+
+packages:
+
+  /flatten@1.0.3:
+    resolution: {integrity: sha512-dVsPA/UwQ8+2uoFe5GHtiBMu48dWLTdsuEd7CKGlZlD78r1TTWBvDuFaFGKCo/ZfEr95Uk56vZoX86OsHkUeIg==}
+    deprecated: flatten is deprecated in favor of utility frameworks such as lodash.
+    dev: true
+
+  /mime-db@1.52.0:
+    resolution: {integrity: sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /mime-types@2.1.35:
+    resolution: {integrity: sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==}
+    engines: {node: '>= 0.6'}
+    dependencies:
+      mime-db: 1.52.0
+    dev: false

src/core/package-managers/__tests__/fixtures/yarn-project/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "yarn-ls",
+  "packageManager": "yarn@1.22.19",
+  "dependencies": {
+    "mime-types": "2.1.35"
+  },
+  "devDependencies": {
+    "flatten": "1.0.3"
+  }
+}

src/core/package-managers/__tests__/fixtures/yarn-project/yarn.lock

@@ -0,0 +1,20 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+flatten@1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/flatten/-/flatten-1.0.3.tgz#c1283ac9f27b368abc1e36d1ff7b04501a30356b"
+  integrity sha512-dVsPA/UwQ8+2uoFe5GHtiBMu48dWLTdsuEd7CKGlZlD78r1TTWBvDuFaFGKCo/ZfEr95Uk56vZoX86OsHkUeIg==
+
+mime-db@1.52.0:
+  version "1.52.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.52.0.tgz#bbabcdc02859f4987301c856e3387ce5ec43bf70"
+  integrity sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==
+
+mime-types@2.1.35:
+  version "2.1.35"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.35.tgz#381a871b62a734450660ae3deee44813f70d959a"
+  integrity sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==
+  dependencies:
+    mime-db "1.52.0"

src/core/package-managers/__tests__/npm.test.ts

@@ -0,0 +1,46 @@
+import { beforeAll, describe, expect, it } from 'vitest';
+import path from 'node:path';
+import { npm } from '../npm';
+import { execaCommand } from 'execa';
+import { exists } from 'fs-extra';
+
+const cwd = path.resolve(__dirname, 'fixtures/npm-project');
+
+describe('NPM Package Management Utils', () => {
+  beforeAll(async () => {
+    // NPM needs the modules installed for 'npm ls' to work
+    await execaCommand('npm i', { cwd });
+  });
+
+  describe('listDependencies', () => {
+    it('should list direct dependencies', async () => {
+      const actual = await npm.listDependencies({ cwd });
+      expect(actual).toEqual([
+        { name: 'flatten', version: '1.0.3' },
+        { name: 'mime-types', version: '2.1.35' },
+      ]);
+    });
+
+    it('should list all dependencies', async () => {
+      const actual = await npm.listDependencies({ cwd, all: true });
+      expect(actual).toEqual([
+        { name: 'flatten', version: '1.0.3' },
+        { name: 'mime-types', version: '2.1.35' },
+        { name: 'mime-db', version: '1.52.0' },
+      ]);
+    });
+  });
+
+  describe('downloadDependency', () => {
+    it('should download the dependency as a tarball', async () => {
+      const downloadDir = path.resolve(cwd, 'dist');
+      const id = 'mime-db@1.52.0';
+      const expected = path.resolve(downloadDir, 'mime-db-1.52.0.tgz');
+
+      const actual = await npm.downloadDependency(id, downloadDir);
+
+      expect(actual).toEqual(expected);
+      expect(await exists(actual)).toBe(true);
+    });
+  });
+});

src/core/package-managers/__tests__/pnpm.test.ts

@@ -0,0 +1,34 @@
+import { beforeAll, describe, expect, it } from 'vitest';
+import path from 'node:path';
+import { pnpm } from '../pnpm';
+import { execaCommand } from 'execa';
+
+const cwd = path.resolve(__dirname, 'fixtures/pnpm-project');
+
+process.env.WXT_PNPM_IGNORE_WORKSPACE = 'true';
+
+describe('PNPM Package Management Utils', () => {
+  beforeAll(async () => {
+    // PNPM needs the modules installed, or 'pnpm ls' will return a blank list.
+    await execaCommand('pnpm i --ignore-workspace', { cwd });
+  });
+
+  describe('listDependencies', () => {
+    it('should list direct dependencies', async () => {
+      const actual = await pnpm.listDependencies({ cwd });
+      expect(actual).toEqual([
+        { name: 'flatten', version: '1.0.3' },
+        { name: 'mime-types', version: '2.1.35' },
+      ]);
+    });
+
+    it('should list all dependencies', async () => {
+      const actual = await pnpm.listDependencies({ cwd, all: true });
+      expect(actual).toEqual([
+        { name: 'flatten', version: '1.0.3' },
+        { name: 'mime-types', version: '2.1.35' },
+        { name: 'mime-db', version: '1.52.0' },
+      ]);
+    });
+  });
+});

src/core/package-managers/__tests__/yarn.test.ts

@@ -0,0 +1,27 @@
+import { describe, expect, it } from 'vitest';
+import path from 'node:path';
+import { yarn } from '../yarn';
+
+const cwd = path.resolve(__dirname, 'fixtures/yarn-project');
+
+describe('Yarn Package Management Utils', () => {
+  describe('listDependencies', () => {
+    it('should list direct dependencies', async () => {
+      const actual = await yarn.listDependencies({ cwd });
+      expect(actual).toEqual([
+        { name: 'mime-db', version: '1.52.0' },
+        { name: 'flatten', version: '1.0.3' },
+        { name: 'mime-types', version: '2.1.35' },
+      ]);
+    });
+
+    it('should list all dependencies', async () => {
+      const actual = await yarn.listDependencies({ cwd, all: true });
+      expect(actual).toEqual([
+        { name: 'mime-db', version: '1.52.0' },
+        { name: 'flatten', version: '1.0.3' },
+        { name: 'mime-types', version: '2.1.35' },
+      ]);
+    });
+  });
+});

src/core/package-managers/bun.ts

@@ -0,0 +1,27 @@
+import { dedupeDependencies, npm } from './npm';
+import { WxtPackageManagerImpl } from './types';
+
+export const bun: WxtPackageManagerImpl = {
+  overridesKey: 'overrides', // But also supports "resolutions"
+  downloadDependency(...args) {
+    return npm.downloadDependency(...args);
+  },
+  async listDependencies(options) {
+    const args = ['pm', 'ls'];
+    if (options?.all) {
+      args.push('--all');
+    }
+    const { execa } = await import('execa');
+    const res = await execa('bun', args, { cwd: options?.cwd });
+    return dedupeDependencies(
+      res.stdout
+        .split('\n')
+        .slice(1) // Skip the first line, is not a dependency
+        .map((line) => line.trim())
+        .map((line) => /.* (@?\S+)@(\S+)$/.exec(line))
+        // @ts-expect-error: Filtering to known non-null matches
+        .filter<RegExpExecArray>((match) => !!match)
+        .map(([_, name, version]) => ({ name, version })),
+    );
+  },
+};

src/core/package-managers/index.ts

@@ -0,0 +1,76 @@
+import {
+  detectPackageManager,
+  addDependency,
+  addDevDependency,
+  ensureDependencyInstalled,
+  installDependencies,
+  removeDependency,
+  PackageManager,
+  PackageManagerName,
+} from 'nypm';
+import { WxtPackageManager } from '~/types';
+import { bun } from './bun';
+import { WxtPackageManagerImpl } from './types';
+import { yarn } from './yarn';
+import { pnpm } from './pnpm';
+import { npm } from './npm';
+
+export async function createWxtPackageManager(
+  root: string,
+): Promise<WxtPackageManager> {
+  const pm = await detectPackageManager(root, {
+    includeParentDirs: true,
+  });
+
+  // Use requirePm to prevent throwing errors before the package manager utils are used.
+  const requirePm = <T>(cb: (pm: PackageManager) => T) => {
+    if (pm == null) throw Error('Could not detect package manager');
+    return cb(pm);
+  };
+
+  return {
+    get name() {
+      return requirePm((pm) => pm.name);
+    },
+    get command() {
+      return requirePm((pm) => pm.command);
+    },
+    get version() {
+      return requirePm((pm) => pm.version);
+    },
+    get majorVersion() {
+      return requirePm((pm) => pm.majorVersion);
+    },
+    get lockFile() {
+      return requirePm((pm) => pm.lockFile);
+    },
+    get files() {
+      return requirePm((pm) => pm.files);
+    },
+    addDependency,
+    addDevDependency,
+    ensureDependencyInstalled,
+    installDependencies,
+    removeDependency,
+    get overridesKey() {
+      return requirePm((pm) => packageManagers[pm.name].overridesKey);
+    },
+    downloadDependency(...args) {
+      return requirePm((pm) =>
+        packageManagers[pm.name].downloadDependency(...args),
+      );
+    },
+    listDependencies(...args) {
+      return requirePm((pm) =>
+        packageManagers[pm.name].listDependencies(...args),
+      );
+    },
+  };
+}
+
+const packageManagers: Record<PackageManagerName, WxtPackageManagerImpl> = {
+  npm,
+  pnpm,
+  bun,
+  yarn,
+};

src/core/package-managers/npm.ts

@@ -0,0 +1,85 @@
+import { Dependency } from '~/types';
+import { WxtPackageManagerImpl } from './types';
+import path from 'node:path';
+import { ensureDir } from 'fs-extra';
+
+export const npm: WxtPackageManagerImpl = {
+  overridesKey: 'overrides',
+  async downloadDependency(id, downloadDir) {
+    await ensureDir(downloadDir);
+    const { execa } = await import('execa');
+    const res = await execa('npm', ['pack', id, '--json'], {
+      cwd: downloadDir,
+    });
+    const packed: PackedDependency[] = JSON.parse(res.stdout);
+    return path.resolve(downloadDir, packed[0].filename);
+  },
+  async listDependencies(options) {
+    const args = ['ls', '--json'];
+    if (options?.all) {
+      args.push('--depth', 'Infinity');
+    }
+    const { execa } = await import('execa');
+    const res = await execa('npm', args, { cwd: options?.cwd });
+    const project: NpmListProject = JSON.parse(res.stdout);
+
+    return flattenNpmListOutput([project]);
+  },
+};
+
+export function flattenNpmListOutput(projects: NpmListProject[]): Dependency[] {
+  const queue: Record<string, NpmListDependency>[] = projects.flatMap(
+    (project) => {
+      const acc: Record<string, NpmListDependency>[] = [];
+      if (project.dependencies) acc.push(project.dependencies);
+      if (project.devDependencies) acc.push(project.devDependencies);
+      return acc;
+    },
+  );
+  const dependencies: Dependency[] = [];
+  while (queue.length > 0) {
+    Object.entries(queue.pop()!).forEach(([name, meta]) => {
+      dependencies.push({
+        name,
+        version: meta.version,
+      });
+      if (meta.dependencies) queue.push(meta.dependencies);
+      if (meta.devDependencies) queue.push(meta.devDependencies);
+    });
+  }
+  return dedupeDependencies(dependencies);
+}
+
+export function dedupeDependencies(dependencies: Dependency[]): Dependency[] {
+  const hashes = new Set<string>();
+  return dependencies.filter((dep) => {
+    const hash = `${dep.name}@${dep.version}`;
+    if (hashes.has(hash)) {
+      return false;
+    } else {
+      hashes.add(hash);
+      return true;
+    }
+  });
+}
+
+export interface NpmListProject {
+  name: string;
+  dependencies?: Record<string, NpmListDependency>;
+  devDependencies?: Record<string, NpmListDependency>;
+}
+
+export interface NpmListDependency {
+  version: string;
+  resolved?: string;
+  overridden?: boolean;
+  dependencies?: Record<string, NpmListDependency>;
+  devDependencies?: Record<string, NpmListDependency>;
+}
+
+interface PackedDependency {
+  id: string;
+  name: string;
+  version: string;
+  filename: string;
+}

src/core/package-managers/pnpm.ts

@@ -0,0 +1,28 @@
+import { NpmListProject, flattenNpmListOutput, npm } from './npm';
+import { WxtPackageManagerImpl } from './types';
+
+export const pnpm: WxtPackageManagerImpl = {
+  overridesKey: 'resolutions', // "pnpm.overrides" has a higher priority, but I don't want to deal with nesting
+  downloadDependency(...args) {
+    return npm.downloadDependency(...args);
+  },
+  async listDependencies(options) {
+    const args = ['ls', '-r', '--json'];
+    if (options?.all) {
+      args.push('--depth', 'Infinity');
+    }
+    // Helper for testing - since WXT uses pnpm workspaces, folders inside it don't behave like
+    // standalone projects unless you pass the --ignore-workspace flag.
+    if (
+      typeof process !== 'undefined' &&
+      process.env.WXT_PNPM_IGNORE_WORKSPACE === 'true'
+    ) {
+      args.push('--ignore-workspace');
+    }
+    const { execa } = await import('execa');
+    const res = await execa('pnpm', args, { cwd: options?.cwd });
+    const projects: NpmListProject[] = JSON.parse(res.stdout);
+
+    return flattenNpmListOutput(projects);
+  },
+};

src/core/package-managers/types.ts

@@ -0,0 +1,6 @@
+import { WxtPackageManager } from '~/types';
+
+export type WxtPackageManagerImpl = Pick<
+  WxtPackageManager,
+  'downloadDependency' | 'listDependencies' | 'overridesKey'
+>;

src/core/package-managers/yarn.ts

@@ -0,0 +1,54 @@
+import { Dependency } from '~/types';
+import { WxtPackageManagerImpl } from './types';
+import { dedupeDependencies, npm } from './npm';
+
+export const yarn: WxtPackageManagerImpl = {
+  overridesKey: 'resolutions',
+  downloadDependency(...args) {
+    return npm.downloadDependency(...args);
+  },
+  async listDependencies(options) {
+    const args = ['list', '--json'];
+    if (options?.all) {
+      args.push('--depth', 'Infinity');
+    }
+    const { execa } = await import('execa');
+    const res = await execa('yarn', args, { cwd: options?.cwd });
+    const tree = res.stdout
+      .split('\n')
+      .map<JsonLine>((line) => JSON.parse(line))
+      .find((line) => line.type === 'tree')?.data as JsonLineTree | undefined;
+    if (tree == null) throw Error("'yarn list --json' did not output a tree");
+
+    const queue = [...tree.trees];
+    const dependencies: Dependency[] = [];
+
+    while (queue.length > 0) {
+      const { name: treeName, children } = queue.pop()!;
+      const match = /(@?\S+)@(\S+)$/.exec(treeName);
+      if (match) {
+        const [_, name, version] = match;
+        dependencies.push({ name, version });
+      }
+      if (children != null) {
+        queue.push(...children);
+      }
+    }
+
+    return dedupeDependencies(dependencies);
+  },
+};
+
+type JsonLine =
+  | { type: unknown; data: unknown }
+  | { type: 'tree'; data: JsonLineTree };
+
+interface JsonLineTree {
+  type: 'list';
+  trees: Tree[];
+}
+
+interface Tree {
+  name: string;
+  children?: Tree[];
+}

src/core/prepare.ts

@@ -1,15 +1,11 @@
 import { InlineConfig } from '~/types';
-import {
-  findEntrypoints,
-  generateTypesDir,
-  getInternalConfig,
-} from '~/core/utils/building';
+import { findEntrypoints, generateTypesDir } from '~/core/utils/building';
+import { registerWxt, wxt } from './wxt';
 
 export async function prepare(config: InlineConfig) {
-  const internalConfig = await getInternalConfig(config, 'build');
+  await registerWxt('build', config);
+  wxt.logger.info('Generating types...');
 
-  internalConfig.logger.info('Generating types...');
-
-  const entrypoints = await findEntrypoints(internalConfig);
-  await generateTypesDir(entrypoints, internalConfig);
+  const entrypoints = await findEntrypoints();
+  await generateTypesDir(entrypoints);
 }