feat: build and ship a Firefox target from the same source - #1
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Sharp was Chrome-only in three places, none of them deep: Firefox has no extension service worker, needs an add-on ID and a version floor, and answers runtime messages with a returned promise rather than a claimed channel. scripts/manifest.mjs derives Firefox's manifest from the one in the repository, which stays Chrome's so the checkout is still loadable unpacked. The build takes --target=firefox and compiles a second, complete build into firefox/. The target is an esbuild constant, so each bundle carries only its own browser's branch -- verified in the minified output. bun run release now produces a zip per target. Host permissions are the one real behavioural difference. Chrome grants declared host_permissions at install; Firefox treats them as optional, so until the reader grants them the content scripts never inject and the provider is unreachable, which is indistinguishable from a broken extension. The popup checks permissions.contains for the filtered sites and the configured provider's origin, says which are missing, and offers a button that asks for exactly those. The request has to be the first thing the click does, or Firefox rejects it as outside the user gesture. Also declares data_collection_permissions, which AMO requires, as websiteContent: nothing reaches the developer, but post content goes to the provider the reader chose. web-ext lint reports no errors on the Firefox build. Two bugs found on the way, both of which bite Firefox harder than Chrome: - An orphaned content script reads chrome.runtime.id to notice it has been unloaded, inside a promise failure handler. Chrome empties it; Firefox throws, which would have turned the handler into an unhandled rejection and left posts stuck behind their placeholders forever. orphaned() now absorbs both. - The privacy policy listed x.com and the provider APIs but not www.youtube.com, which the manifest has requested since YouTube support landed.
The 0.3.0 release now carries sharp-0.3.0-firefox.zip alongside the Chrome zip, which keeps its original name and URL: the published binary predates this branch and rebuilding it would put different bytes behind a link people have already downloaded. From 0.4.0 both are named by target.
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📝 WalkthroughWalkthroughThe extension now supports separate Chrome and Firefox builds, manifests, release archives, runtime behavior, host-permission requests, and Firefox-specific documentation. ChangesFirefox target support
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Developer
participant BuildScript
participant ManifestHelpers
participant FirefoxExtension
participant Popup
Developer->>BuildScript: run Firefox build
BuildScript->>ManifestHelpers: derive Firefox manifest and assets
ManifestHelpers-->>BuildScript: Firefox manifest and asset list
BuildScript->>FirefoxExtension: write bundled output to firefox/
FirefoxExtension->>Popup: load target-specific popup
Popup->>Popup: check required host permissions
Popup->>FirefoxExtension: request missing permissions
Merge Risk: 🟡 Moderate · up to Publishing version 0.3.0 would remove the established Chrome download filename and document an incorrect replacement. Preserve the compatibility filename and document the one-release exception before merging. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 41.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 12 functions across 12 files. (6 skipped: 6 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@CONTRIBUTING.md`:
- Line 121: Update the release asset naming guidance around “bun run release” to
document that version 0.3.0 produces sharp-0.3.0.zip without the “-chrome”
suffix, while retaining the existing sharp-<version>-chrome.zip pattern
for releases starting with 0.4.0.
In `@scripts/release.mjs`:
- Line 25: Update the archive-name construction around output so release 0.3.0
omits the target suffix, producing sharp-0.3.0.zip, while versions 0.4.0 and
later retain target suffixes for both archives.
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.gitignore.prettierignoreCONTRIBUTING.mdREADME.mdpackage.jsonprivacy-policy.mdscripts/build.mjsscripts/manifest.mjsscripts/release.mjssrc/background/index.tssrc/common/build.tssrc/common/messages.tssrc/common/settings.tssrc/popup/App.tsxsrc/popup/GeneralPanel.tsxsrc/x/controller.tstests/manifest.test.tstests/messages.test.ts
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The release script names both archives by target, but 0.3.0 shipped its Chrome build as sharp-0.3.0.zip before there was a second one, and keeps that name so the URL people already have goes on working. Say so where a releaser reads it.
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Sharp was Chrome-only in three places, none of them deep: Firefox has no
extension service worker, needs an add-on ID and a version floor, and answers
runtime messages with a returned promise rather than a claimed channel.
scripts/manifest.mjs derives Firefox's manifest from the one in the repository,
which stays Chrome's so the checkout is still loadable unpacked. The build takes
--target=firefox and compiles a second, complete build into firefox/. The target
is an esbuild constant, so each bundle carries only its own browser's branch --
verified in the minified output. bun run release now produces a zip per target.
Host permissions are the one real behavioural difference. Chrome grants declared
host_permissions at install; Firefox treats them as optional, so until the reader
grants them the content scripts never inject and the provider is unreachable,
which is indistinguishable from a broken extension. The popup checks
permissions.contains for the filtered sites and the configured provider's origin,
says which are missing, and offers a button that asks for exactly those. The
request has to be the first thing the click does, or Firefox rejects it as
outside the user gesture.
Also declares data_collection_permissions, which AMO requires, as websiteContent:
nothing reaches the developer, but post content goes to the provider the reader
chose. web-ext lint reports no errors on the Firefox build.
Two bugs found on the way, both of which bite Firefox harder than Chrome:
unloaded, inside a promise failure handler. Chrome empties it; Firefox throws,
which would have turned the handler into an unhandled rejection and left posts
stuck behind their placeholders forever. orphaned() now absorbs both.
which the manifest has requested since YouTube support landed.
Summary by CodeRabbit