worker: strip types in Web Worker module entries - #66085
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Strip TypeScript from file-backed module worker entries before evaluating the fetched source. Add regression coverage and document the supported entry types. Assisted-by: Codex Signed-off-by: Hubert Walczak <hubertwalczak8@gmail.com>
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #66085 +/- ##
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+ Coverage 90.27% 90.28% +0.01%
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Files 789 789
Lines 271623 271642 +19
Branches 51847 51860 +13
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+ Hits 245196 245250 +54
+ Misses 16910 16861 -49
- Partials 9517 9531 +14
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The experimental Web Worker module entries don't perform TypeScript stripping: type annotations in the entry file cause a SyntaxError, even though a JavaScript-compatible entry importing files with TypeScript annotations succeeds.
The proposed solution is to strip types from file-backed .ts, .mts, and .cts module-worker entries before evaluation, preserving existing fetching and worker-type semantics.