Update submodule with ES5 removals #1963
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Pull Request Overview
This PR updates the TypeScript submodule to incorporate ES5 code generation removals from the stable TypeScript compiler. The changes primarily reflect the removal of ES5-specific transformations, resulting in cleaner generated JavaScript that uses modern ES6+ syntax.
Key Changes
- Updated TypeScript submodule from
bf40cd86to763d8821 - Removed ES5 compatibility transformations including IIFE class wrappers,
vartoconstconversions, and helper function polyfills - Updated baseline test outputs to reflect modern ES6+ code generation patterns
Reviewed Changes
Copilot reviewed 300 out of 1192 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
_submodules/TypeScript |
Updated submodule commit to include ES5 removal changes |
testdata/baselines/reference/submodule/compiler/* |
Updated baseline snapshots reflecting ES6+ class syntax without IIFE wrappers and var replaced with const |
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andrewbranch
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Oct 28, 2025
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Also removes some code that was ported but did not need to be.