Unstable File Invalidations

[gorakong]

↪️ Pull Request

This PR allows passing in file paths through FS Event objects as an option through Parcel's node API. These are then converted to events and invalidated in the RequestTracker. This should support the ability to invalidate node_module packages in CI when combined with a list that is generated by comparing an old vs new copy of the yarn.lock (of the project being built).

💻 Examples

Example usage:

const bundler = new Parcel({
  entries: 'src/entry.tsx',
  shouldDisableCache: false,
  unstableFileInvalidations: [
    {path: 'node_modules/react-dom/profiling.js', type: 'create'},
    {
      path: 'node_modules/react/cjs/react.production.min.js',
      type: 'create',
    },
    {
      path: 'src/foo.tsx',
      type: 'update',
    },
  ]
});

🚨 Test instructions

(These reference the example above):

• Did a build of src/entry.tsx without unstableFileInvalidations
• Then did another build of the same entry (without clearing the cache) with unstableFileInvalidations passed in as an option
• Verified that both node_modules/react-dom/profiling.js, node_modules/react/cjs/react.production.min.js, and src/foo.tsx are all rebuilt

[JakeLane]

Awesome work!