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[feature]: Remove unused dynamic imported chunks/Rolldown outputs unused dynamic imported chunks #2604

Description

@sapphi-red

Reproduction link or steps

  1. Open https://stackblitz.com/edit/github-xv4yss-atzcaf?file=src%2Fentry.js,src%2Fdep.js
  2. npm i runs automatically
  3. npm run build runs automatically
  4. See dist/typescript-*.js is output

What is expected?

Only dist/entry.js is output and dist/typescript-*.js is not output.

What is actually happening?

dist/typescript-*.js is output even if it's not used or is an entry point.

System Info

Stackblitz

  System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 18.20.3 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.2.3 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    rolldown: https://pkg.pr.new/rolldown@829d80a => 0.13.2

Any additional comments?

Found while trying to bundle Vite with Rolldown.

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