TypeScript 7 in production: a CI migration decision guide
TypeScript 7.0 reached general availability on 8 July 2026 with the Go-native compiler, cutting full builds by 8x to 12x and memory use by up to a quarter on Microsoft's published benchmarks. The release ships without a stable programmatic API until 7.1, which blocks typescript-eslint, framework template checking and Next.js detection, so the right move depends on which of three migration profiles your repo fits.
TypeScript 5.x to 7.0: What Breaks and What It Buys
TypeScript 7.0 is a native Go port of the compiler, and Microsoft measured type-checking the VS Code codebase falling from 125.7 seconds to 10.6 seconds at default settings. A team still on 5.8 is two majors behind, so this is the staged route through 6.0, the changed defaults and removals that actually break builds, and who should wait for the 7.1 API.