Bump babel to ^7.21.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@babel/code-frame (source)	^7.18.6 -> ^7.21.4
@babel/core (source)	^7.21.3 -> ^7.21.4
@babel/helper-module-imports (source)	^7.18.6 -> ^7.21.4
@babel/plugin-syntax-jsx (source)	^7.18.6 -> ^7.21.4
@babel/plugin-transform-runtime (source)	^7.21.0 -> ^7.21.4
@babel/preset-env (source)	^7.20.2 -> ^7.21.4
@babel/preset-typescript (source)	^7.21.0 -> ^7.21.4
@babel/traverse (source)	^7.21.3 -> ^7.21.4
@babel/types (source)	^7.21.3 -> ^7.21.4

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Release Notes

babel/babel

v7.21.4

Compare Source

🐛 Bug Fix

• babel-core, babel-helper-module-imports, babel-preset-typescript
  • #​15478 Fix support for import/export in .cts files (@​liuxingbaoyu)
• babel-generator
  • #​15496 Fix compact printing of non-null assertion operators (@​rtsao)

💅 Polish

• babel-helper-create-class-features-plugin, babel-plugin-proposal-class-properties, babel-plugin-transform-typescript, babel-traverse
  • #​15427 Fix moving comments of removed nodes (@​nicolo-ribaudo)

🏠 Internal

• Other
  • #​15519 Update Prettier integration test (@​fisker)
• babel-parser
  • #​15510 refactor: introduce lookaheadInLineCharCode (@​JLHwung)
• babel-code-frame, babel-highlight
  • #​15499 Polish babel-code-frame highlight test (@​JLHwung)

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[ZeeshanTamboli]

I think the PR babel/babel#15427 retains the comments of TypeScript types in the output JS files, which causes an issue for us (See this PR's CI failure) where the comments for the types should not be added in the JS files when transforming. It is irrelevant in the output.

Related Babel issue - babel/babel#9916 for babel/babel#15427.

I have raised the concern in babel/babel#15427 (comment) and babel/babel#15579.

[renovate]

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[ZeeshanTamboli]

@mui/core Regarding the above issue, I have added a tag @babel-ignore-comment-in-output to let babel identify and ignore that comment in the JS file. Please check.

Related babel issue - babel/babel#15579