[Project516]

vite build fails on any app that imports @project516/ffmpeg-wasm 0.17.0:

[plugin vite:worker-import-meta-url] .../@project516/ffmpeg-wasm/dist/esm/classes.js
Error: Expected worker options type property to be a literal value.

Vite only bundles new Worker(new URL(...), { type }) when type is a literal. The ESM build has passed WORKER_TYPE, a variable, since #6. The bundled worker branch in classes.ts now passes type: "module".

The UMD build keeps its classic worker. Webpack's worker plugin replaces the type of a worker it bundles with undefined when the output is not ESM, so dist/umd/ffmpeg.js still has {type:void 0}, the same as before. The classWorkerURL branch still uses WORKER_TYPE, because neither bundler handles that call.

Testing

• pnpm build and pnpm lint pass.
• dist/esm/classes.js has type: "module", and dist/umd/ffmpeg.js has {type:void 0} for the bundled worker.
• apps/sveltekit-app with Vite 8 fails vite build against the published 0.17.0 with the error above. With this one-line change applied to the installed classes.js, it builds and emits the worker chunk. On master the same app with Vite 6 fails the same way.
• CI runs the browser tests on the ESM and UMD builds.

[coderabbitai]

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Commits

Reviewing files that changed from the base of the PR and between b05c356 and b217cde.

Files selected for processing: 2

• CHANGELOG.md
• packages/ffmpeg/src/classes.ts

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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[project516-review-bot]

The PR fixes a Vite bundling failure by changing the worker type from a variable (WORKER_TYPE) to a literal string ("module") in the ESM build's bundled worker branch. Vite requires the type option to be a literal for static analysis. The UMD build is unaffected and continues to use the classic worker pattern. Testing confirms the fix works with Vite 6 and 8, and both pnpm build and pnpm lint pass.

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_{review-bot, model nvidia/nemotron-3-ultra-550b-a55b:free, verdict approve}