v0.160.0

New Features:

• The ide, fs and watchman lazy modes have been merged into a single mode. The new mode is now SCM-aware with or without Watchman; when the server starts, it queries Git or Mercurial and checks all existing local changes (changes since the mergebase).

  The file_watcher.watchman.mergebase_with config option has been renamed to file_watcher.mergebase_with; set this to the name of your default remote branch (e.g. origin/main).

  Flowconfig setting migration:

  • lazy_mode=watchman -> lazy_mode=true, file_watcher=watchman
  • lazy_mode=fs -> lazy_mode=true
  • lazy_mode=ide -> lazy_mode=true
  • lazy_mode=none -> lazy_mode=false

• Added parser support for import.meta

• Added type checking support for new.target and import.meta as mixed

Library Definitions:

• Add type for queueMicrotask

Notable bug fixes:

• Improve codemod performance on large codebases
• Fix a bug that could cause "unused suppression" warnings to appear incorrectly when using lazy mode