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feat: Add warning for missing Firefox extension ID in manifest #2293

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feat: Add warning for missing Firefox extension ID in manifest #2293

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1fddf85
fix: add warning for missing Firefox extension ID in manifest
Sbrjt Apr 23, 2026
4f4742b
fix: remove unnecessary blank lines
Sbrjt Apr 25, 2026
6f254a6
fix: add suppressWarnings option for missing Firefox extension ID
Sbrjt Apr 28, 2026
fcdf819
Merge branch 'main' into main
PatrykKuniczak Apr 28, 2026
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12 changes: 12 additions & 0 deletions packages/wxt/src/core/utils/manifest.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,16 @@ export async function generateManifest(
);
}

if (
wxt.config.browser === "firefox" &&
!manifest.browser_specific_settings?.gecko?.id
) {
wxt.logger.warn(
"Firefox requires extension ID for MV3 and recommends it for MV2.\n" +
"For more details, see: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/browser_specific_settings"
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);
}

addEntrypoints(manifest, entrypoints, buildOutput);

if (wxt.config.browser === 'firefox') {
Expand Down Expand Up @@ -162,6 +172,8 @@ export async function generateManifest(
"Manifest 'version' is missing. Either:\n1. Add a version in your <rootDir>/package.json\n2. Pass the version via the manifest option in your wxt.config.ts",
);
}

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return {
manifest,
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