[zhsama]

Summary

part of #44448

Try tsrs 0.18.0 (7.1.0-dev.20260930.4, microsoft/TypeScript@b85298b6a81f) as the type-check compiler. The tsc bin on PATH is @typescript/native (typescript@7.0.2). vp check still uses Oxlint's type-aware checker, and library imports still use TypeScript 6.

On an Apple M4, a hot web check (--noEmit, median of 3 runs) was:

Compiler	Wall	Peak RSS
tsgo 7.0.2, 4 checkers	8.05 s	8.13 GiB
tsgo 7.1.0-dev.20260930.4, 4 checkers	6.21 s	7.24 GiB
tsrs 0.18.0, 4 checkers	1.54 s	1.57 GiB

tsrs reported the same diagnostics as the tsgo build of that TypeScript commit on every workspace package. Against tsgo 7.0.2, web gained 8 TS7031 errors on test mocks of the form async ({ query } = {}). Those callbacks now use the mock's parameter type. The four touched test files pass (116 tests).

packages/contracts still fails type-check with the same two pre-existing TS2307 errors under both compilers.

pnpm trustPolicy: no-downgrade rejects tsrs@0.18.0-ts7.1.0-dev.20260929. The version is published by the oxc-project GitHub Actions trusted publisher and has SLSA provenance; the exclude is limited to that exact version.

Screenshots

Not a UI change.

Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've verified the change and added or updated tests where meaningful regression risk justifies coverage.
• I've updated the documentation accordingly.
• I ran make lint && make type-check (backend) and vp staged (frontend) to appease the lint gods

From Grok

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.05%. Comparing base (0d06488) to head (25f2b12).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #44562   +/-   ##
=======================================
  Coverage   89.05%   89.05%           
=======================================
  Files        5616     5616           
  Lines      337627   337627           
  Branches    67554    67554           
=======================================
+ Hits       300674   300675    +1     
+ Misses      31707    31706    -1     
  Partials     5246     5246           

Flag	Coverage Δ
cli	94.27% <ø> (ø)
dify-ui	91.67% <ø> (ø)
web	88.69% <ø> (+<0.01%)	⬆️

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