feat: add stripTypes in transpilation.

[knightedcodemonkey]

No description provided.

[Copilot]

Pull request overview

Adds a typescript: 'strip' mode to transpileJsxSource that erases TypeScript type-only declarations and inline type syntax (type annotations, as, satisfies, non-null assertions, type assertions) while still transpiling JSX.

Changes:

• New typescript option ('preserve' | 'strip') on TranspileJsxSourceOptions, with AST walking and MagicString-based edits to strip TS syntax
• TS wrapper handling inside the JSX compileExpression path so expressions within JSX attributes/children are also stripped
• Tests, README docs, and a roadmap note about potentially adopting oxc-transform in the future

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/transpile.ts	Core implementation: new types, strip-edit collection/application, TS wrapper handling in expression compilation
test/transpile.test.ts	Three new test cases covering preserve-default, strip with JSX, and strip without JSX
README.md	Documents the new typescript option
docs/next-steps.md	Roadmap item about evaluating oxc-transform
package.json	Version bump to 1.9.1
package-lock.json	Lockfile version bump

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[codecov]

Codecov Report

❌ Patch coverage is 88.15789% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 88.51%. Comparing base (3280173) to head (d1a68fb).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/transpile.ts	88.15%	3 Missing and 6 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #85      +/-   ##
==========================================
+ Coverage   88.44%   88.51%   +0.07%     
==========================================
  Files          25       25              
  Lines        1913     1986      +73     
  Branches      516      540      +24     
==========================================
+ Hits         1692     1758      +66     
- Misses         70       72       +2     
- Partials      151      156       +5     

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