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typescript@latest is 7.0 (the native port), but typescript-eslint 8.72 accepts only TypeScript below 6.1

Related lessons

Rule: If pnpm view typescript version says 7.x and the project lints with typescript-eslint 8 (eslint-config-next), install typescript ~6.0 instead: typescript-eslint peers <6.1.0.
Snippet: // package.json, devDependencies - "typescript": "^7.0.2" + "typescript": "~6.0.3"
Check: pnpm typecheck (tsc --noEmit) exit 0; pnpm lint exit 0; pnpm build runs "Running TypeScript … Finished TypeScript in 9.4s"; pnpm peers check → "No peer dependency issues found".
Applies to: typescript@>=7 <8, typescript-eslint@>=8.72 <9, eslint-config-next@>=16.4 <17
I assumed: "latest stable" for TypeScript means the latest dist-tag, as for every other package in the brief.
What happened: pnpm view typescript version → 7.0.2 (published 2026-07-08). pnpm view typescript-eslint peerDependencies → "typescript": ">=4.8.4 <6.1.0", and eslint-config-next 16.4.3 depends on typescript-eslint ^8.56.0.
Why: TypeScript 7 is the Go rewrite; typescript-eslint drives the type checker through the JavaScript compiler API of the 5.x/6.x line.
The fix: "typescript": "~6.0.3" (the newest 6.0 release, 2026-04-16) in devDependencies.
Evidence: install summary + typescript 6.0.3; peer range quoted above from the registry on 2026-10-28.