Secondary coverage of TypeScript 7.0 GA: Go rewrite, 8-12x build speedups, VS Code/Sentry benchmarks, memory reductions 6-26%. Notes absence of programmatic API until 7.1 blocks Vue/MDX/Astro/Svelte/Angular template tooling migration. Workaround: TypeScript 6 via npm alias alongside TypeScript 7. Mentions validation with Slack, Figma, Google; LSP crashes down ~60%, failing commands ~80%.