Summary

Migrates deck.gl to Yarn 4.15 workspaces with nodeLinker: node-modules, and installs all package-managed examples from the repo root.

Changes

• Set root packageManager to yarn@4.15.0.
• Added .yarnrc.yml with:
  • enableScripts: true
  • nodeLinker: node-modules
  • targeted Yarn peer-warning filters for known legacy/third-party peer noise.
• Expanded root workspaces from modules/* to:
  • modules/*
  • examples/**
• Converted internal deck.gl / @deck.gl/* example deps to workspace:*.
• Added/fixed example workspace metadata and duplicate names.
• Kept Lerna publish/build scope limited to modules/*.
• Updated docs and example READMEs to use one root yarn install.
• Regenerated yarn.lock with Yarn 4.15.
• Updated stale internal @deck.gl/* peer ranges from ~9.3.0-alpha.1 to ~9.3.0-beta.2.

Verification

• corepack yarn --version -> 4.15.0
• corepack yarn install --mode=skip-build
• corepack yarn install --immutable --mode=skip-build
• corepack yarn workspaces list --json
  • 81 total workspaces
  • 64 examples
  • 16 modules
  • 0 duplicate names
• corepack yarn test-fast
• Representative example builds:
  • deckgl-example-react-basic
  • deckgl-example-pure-js-basic
  • deckgl-examples-scatterplot
  • deckgl-examples-gallery

Notes

Plain yarn install runs the existing root postinstall script (npx playwright install chromium). Lockfile verification used --mode=skip-build to avoid browser-install side effects during validation.