ProgrammingSunday, June 28, 2026 8 min read
TypeScript 6.0 rewrites inference — here's what actually breaks
A pragmatic upgrade guide for teams shipping large codebases, including the three patterns you'll need to refactor.
PR
By Priya Rao
Staff Writer
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TypeScript 6 is the largest inference change since 3.7. Most projects will just work. Some won't.
Here are the three patterns we saw break in real-world migrations, and how to fix them cleanly.
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