chore(deps): update babel monorepo to v8

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@babel/core (source)	^7.29.0 → ^8.0.0
@babel/plugin-proposal-decorators (source)	^7.29.0 → ^8.0.0

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Release Notes

babel/babel (@​babel/core)

v8.0.1

Compare Source

💥 Breaking Change

• babel-core, babel-plugin-transform-object-rest-spread, babel-plugin-transform-runtime, babel-preset-env, babel-standalone
  • #​18079 Actually remove preset-env's useBuiltIns (@​nicolo-ribaudo)

v8.0.0

Compare Source

👓 Spec Compliance

• babel-core
  • #​18039 perf: Only extract source map comments at the end of the file (@​liuxingbaoyu)

💥 Breaking Change

• babel-cli, babel-node, babel-plugin-proposal-decorators, babel-plugin-transform-classes, babel-plugin-transform-function-name, babel-plugin-transform-modules-commonjs, babel-plugin-transform-object-rest-spread, babel-plugin-transform-parameters, babel-plugin-transform-react-constant-elements, babel-plugin-transform-regenerator, babel-preset-env, babel-register
  • #​18069 Fallback to assuming ESM support with modules: auto (@​nicolo-ribaudo)
• babel-plugin-transform-runtime, babel-runtime-corejs3, babel-runtime
  • #​18036 Remove corejs exports for @babe/runtime-corejs3 (@​liuxingbaoyu)
• babel-parser
  • #​18034 Remove locations: "packed" (@​liuxingbaoyu)

🐛 Bug Fix

• babel-generator
  • #​18046 fix(generator): improve new callee parens check (@​JLHwung)
• babel-plugin-transform-modules-systemjs
  • #​18032 fix(systemjs): support proto as an export name (@​JLHwung)

📝 Documentation

• #​18070 Add EOL date for Babel 7 (end of June 2027) to SECURITY.md (@​nicolo-ribaudo)

🏠 Internal

• #​18018 ci: enforce yarn integrity (@​JLHwung)

🏃‍♀️ Performance

• babel-core
  • #​18039 perf: Only extract source map comments at the end of the file (@​liuxingbaoyu)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.34%. Comparing base (89e1968) to head (61cc803).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #980   +/-   ##
=======================================
  Coverage   74.34%   74.34%           
=======================================
  Files          66       66           
  Lines        3461     3461           
=======================================
  Hits         2573     2573           
  Misses        688      688           
  Partials      200      200           

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[eternal-flame-AD]

I'm not super sure what's the right thing to do other than this duct tape fix : it seems like something went wrong with the setup now that everything gets transpiled before super() instead of after. @jmattheis do you know anything?

[renovate]

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[jmattheis]

I'll have a look at this on the weekend.

[jmattheis]

@eternal-flame-AD FYI: The babel updates rewrites the class constructor super(); into a sequence expression super(), _init_extra(this);. The transform from oxc (used by vite) has trouble with this, and generates invalid JavaScript code.

There is already a PR, which fixes similar stuff. I added this error case as comment, maybe it will be included. oxc-project/oxc#20529 (review)