facebook/metro v0.83.6

on GitHub

This release is on the 0.83.x branch

• [Feature]: Add keepalive "heartbeat" message to Fast Refresh connections (#1685 by @robhogan)
• [Feature]: Add changeId metadata on HMRClient update-done messages (1585e444284f by @huntie)
• [Fix]: Include user-defined Babel config in transformer cache key to ensure correctness (#1638 by @EvanBacon)
• [Fix]: Detection of contents of directories moved or cloned into a watched location (#1660 by @robhogan)
• [Fix]: Correctly detect contents as removed when a watched directory is moved, on macOS without Watchman (c9e9fe64a77c by @robhogan)
• [Performance]: Optimize PackageCache: use Map/Set, cache null results, eliminate per-hit allocations (877b64ea5967 by @robhogan)
• [Types]: Restore type exports from metro that were previously TypeScript-specific (#1672 by @robhogan)

NOTE: Experimental features are not covered by semver and can change at any time.

• [Experimental]: Add config.unstable_fileMapPlugins (567aa8b62b95 by @robhogan)