Ref: facebook/react#16604

This issues tracks what is missing before this plugin attains "feature-parity" with the RN implementation and is representative of the "fast-refresh" branding.

Tasks

• Error Recovery
  • Module Import Errors
    • Static Imports
    • Dynamic Imports (Lazy)
    • Add/Remove Imports
    • Concurrent Mode
  • Syntax Errors
    • File Level
    • Component Level
    • Life-cycle Method Level
    • Function Return Level
  • Runtime Errors
    • Rendering Errors
    • React-related Errors
  • Root Mounting Errors (Full Refresh)
    • Error on Initial Mount
    • Accidental Root Unmount
• Component Auto-Registration
  • Function Components (via Babel plugin)
    • Loader would also pickup false-negatives from the plugin
  • Class Components (via packaged loader)
  • Mutating Exports (add/remove/change)
• Error Box Integration (iframe) feat: error integration #3
  • Compilation Errors (via Socket)
    • Renders Error Message
    • Dismissal after Error Recovery (via tracking of Hot status)
  • Runtime Errors (via console injection)
    • Renders Error Message (optional source trace? source-map support?)
    • Dismissal after Error Recovery (via hook in window)
• Webpack Advanced Integration
  • Supports __resourceQuery (wait for WDS v4) Add custom sockHost/sockPort/sockPath #52
  • Allow custom socket integrations (through transportMode or a plugin option with a similar footprint) feat: allow socket runtime to be configurable #64
  • Express-like middleware to cater advanced WDM users
• Webpack@5 Support feat: add webpack 5 support #123
  • Correctly detects context.hot
  • Update hook footprints to match new object types
  • Detects and support multi-compilers and child-compilers (Obsolete for now, this plugin won't break in those scenarios)
  • Better integration with the new modular HMR system feat: add support for HMR Invalidation API #89
  • Release after Webpack@5 hits beta stage (0.4.0-beta.6+)
• Tests
  • Fast refresh conformance tests test: set up conformance testing architecture for React Refresh #93 test: add more tests from metro #96
  • Fast refresh error recovery regression tests
  • Plugin unit tests test: overhaul of testing infra and add more tests #127