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TypeScript 5.9 RC

Official TypeScript changelog summary with source attribution, release tags, and community reactions.

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TypeScript8 months agoOct 1, 2025, 08:35 PMUsefulAI-assisted summary

score 0

+Recreated tag to point to the correct commit; npm package contains the proper content.
~Release notes available via the announcement; includes fixes for issues introduced in TypeScript 5.9.0 (Beta) and 5.9.1 (RC).
+Download the RC build directly from npm.

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TypeScript4 weeks agoMay 8, 2026, 03:00 PMUsefulmanual summary

score 15

May break your integration