React Native @reactnative.dev · Apr 8 Faster Metro startup Metro is >3x faster to cold start, with bigger speedups on larger projects - great news for monorepos and CI builds. This was achieved by deferring source hashing to only read files actually bundled, greatly reducing IO with negligible impact on build speed.
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Faster Android startup The startup time of all Android apps has been improved by skipping the compression step for the JavaScript bundle. For the Discord mobile app, the Margelo team measured a 12% time-to-interactive (TTI) improvement, which made the app start 400ms faster on a Samsung A14.