TypeScript 6 stableTypeOrdering and TS 7 Context Reference
TypeScript 6 is partly a bridge release toward TypeScript 7. One of the migration tools added in TS 6 is --stableTypeOrdering.
What --stableTypeOrdering Is For
npx tsc --noEmit --stableTypeOrderingUse it when:
- comparing TS 6 and TS 7 behavior
- reducing noisy declaration-output diffs during migration work
- investigating type-order-sensitive inference changes
What It Is Not For
- normal development builds
- CI defaults for everyday projects
- performance tuning
It can add noticeable type-checking overhead.
If It Reveals New Errors
That usually means previous inference depended on unstable ordering. The fix is usually to make intent explicit.
// Prefer explicit annotations when inference starts to wobble
const config: SomeExplicitType = buildConfig();
someFunction<SomeExplicitType>(config);TS 7 Context
Keep TS 7 context high-level in TS 6 work:
- TS 6 is the practical migration surface today
- TS 7 context matters because TS 6 deprecations are preparing for that future
- Do not treat TS 7 preview behavior as the default answer unless the user explicitly targets it