feat(build): typecheck on TypeScript 7 (Go compiler), tooling stays on TS6 API#103
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…ays on TS6 API
Adopts TS7's native Go compiler for the ~10x-faster typecheck without breaking
tooling that needs the TS6 programmatic API (TS7 has no stable API until 7.1;
typescript-eslint + the proptest oracle crash on it).
- `typescript` stays real 6.0.3 → require("typescript") gives the full 6.x API to
typescript-eslint + proptest at runtime.
- `@typescript/native` (= TS7) added as a packages/core DEPENDENCY, so consumers
get the fast compiler too — the gate typechecks on TS7 everywhere, not just
in-repo. Both packages expose a `tsc` bin, so .bin/tsc is ambiguous; TS7 is
referenced by explicit package path:
* typecheck script → node_modules/@typescript/native/bin/tsc
* gate TSC_BIN → resolveTs7Tsc() walks up to @typescript/native (defensive
fallback to plain tsc keeps the gate functional if ever absent).
- Tests: gate-tool-paths.test.ts (TSC_BIN resolves TS7); gate-incremental.test.ts
now runs the gate's ACTUAL resolved binary, not a hardcoded .bin/tsc.
TS7 verified to honor the gate's flags (--strict --noUncheckedIndexedAccess
--incremental --tsBuildInfoFile) with identical diagnostics. Typecheck: multi-sec
→ ~0.34s. Full `bun run validate` green.
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Adopts TypeScript 7's native Go compiler for the typecheck (multi-second → ~0.34s) — used by both
bun run typecheck(CI/dev) and the build gate (the hot per-cycle typecheck during autonomous builds) — without breaking tooling that needs the TS 6 programmatic API.Why the split
TS 7 has no stable programmatic API until 7.1, and
typescript-eslint+ the proptest oracle crash on it (they needts.createProgram/TypeChecker/ModuleKind). So:typescriptstays real 6.0.3 →require("typescript")gives the full 6.x API to tooling at runtime.@typescript/native(= TS 7) is added as apackages/coredependency (consumers get it too), providing the fast compiler.Deterministic wiring
Both packages expose a
tscbin, so.bin/tscis ambiguous. TS 7 is referenced by explicit package path:node_modules/@typescript/native/bin/tscTSC_BIN→resolveTs7Tsc()— walks up for both the hoisted (monorepo) and direct-child (published install) layouts; a loud (non-silent) fallback to ambienttsckeeps the gate functional rather than crashing if TS 7 is ever absent.Verification
--strict --noUncheckedIndexedAccess --incremental --tsBuildInfoFile) with identical diagnostics.gate-incremental.test.tsnow runs the gate's actual resolved binary (not a hardcoded.bin/tsc); newgate-tool-paths.test.tscovers the resolver across layouts + fallback.bun run validategreen (gate typechecks generated code on TS 7).Addresses the TypeScript bump from the dev-toolchain group (#102); the group's TS7-built sonarjs/unicorn remain separate (they need TS 7's runtime API, which our tooling deliberately does not use).