Update babel monorepo to v7.4.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
@​babel/core	devDependencies	minor	7.3.4 -> 7.4.0	homepage, source
@​babel/preset-env	devDependencies	minor	7.3.4 -> 7.4.0	homepage, source

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Release Notes

babel/babel

v7.4.0

Compare Source

👓 Spec Compliance

• babel-parser
  • #​9529 Add readonly to TypeScript type modifier (@​tanhauhau)
  • #​9534 TypeScript Constant contexts (@​tanhauhau)
  • #​9637 Update identifier parsing per Unicode v12 (@​mathiasbynens)
  • #​9616 Allow any reserved word in export {} from specifiers (@​danez)
  • #​9612 [TS] Disallow type casts in arrow parameters (@​nicolo-ribaudo)
  • #​9607 Refactor parsing object members (@​danez)
  • #​9599 Disallow duplicate params in methods (@​danez)
  • #​9586 Treat for loop body as part of loop scope (@​danez)
• babel-parser, babel-plugin-transform-typescript
  • #​9641 Allow context type annotation on getters/setters (@​matt-tingen)
• babel-plugin-proposal-unicode-property-regex, babel-plugin-transform-dotall-regex, babel-plugin-transform-unicode-regex
  • #​9636 Update babel-plugin-proposal-unicode-property-regex for Unicode v12 (@​mathiasbynens)
• babel-generator, babel-parser, babel-plugin-transform-flow-strip-types, babel-plugin-transform-modules-systemjs
  • #​9589 Check exported bindings are defined (@​danez)
• babel-generator, babel-parser, babel-plugin-transform-classes, babel-plugin-transform-flow-comments, babel-plugin-transform-flow-strip-types, babel-plugin-transform-new-target
  • #​9493 Introduce scope tracking in the parser (@​danez)

🚀 New Feature

• babel-helpers, babel-plugin-proposal-class-properties, babel-plugin-proposal-decorators, babel-plugin-proposal-object-rest-spread, babel-plugin-transform-runtime, babel-plugin-transform-typescript, babel-polyfill, babel-preset-env, babel-register, babel-runtime-corejs2, babel-runtime-corejs3
  • #​7646 Update to core-js@3 (@​zloirock)
• babel-template
  • #​9648 Add %%placeholders%% support to @​babel/template (@​nicolo-ribaudo)
• babel-parser, babel-plugin-proposal-partial-application
  • #​9474 Partial application plugin (@​byara)
• babel-generator, babel-helper-create-class-features-plugin, babel-helpers, babel-plugin-proposal-private-methods
  • #​9446 Private Static Class Methods (Stage 3) (@​tim-mc)
• babel-generator, babel-types
  • #​9542 Add placeholders support to @​babel/types and @​babel/generator (@​nicolo-ribaudo)
• babel-parser
  • #​9364 Add parser support for placeholders (@​nicolo-ribaudo)
• babel-generator, babel-parser, babel-plugin-syntax-partial-application, babel-types
  • #​9343 Partial Application Syntax: Stage 1 (@​byara)

🐛 Bug Fix

• babel-helper-create-class-features-plugin, babel-helper-replace-supers, babel-plugin-proposal-private-methods
  • #​9704 Fix super Method Calls in Class Private Methods (@​tim-mc)
• babel-parser
  • #​9699 Correctly parse TS TypeAssertions around arrow functions (@​danez)
  • #​9600 Fix scope check for 2nd+ lexical bindings (@​danez)
  • #​9593 [TS] Correctly forget awaits after parsing async arrows with type args (@​nicolo-ribaudo)
  • #​9585 Fix strict mode prescanning with EmptyStatement (@​danez)
• babel-core, babel-plugin-transform-for-of
  • #​9697 Correctly preserve reference to array in for-of loop (@​danez)
• babel-plugin-transform-typescript
  • #​9693 [plugin-transform-typescript] Fix transpiling of TS abstract classes with decorators (@​agoldis)
• babel-traverse, babel-types
  • #​9692 Fix TSFunctionType visitors definition (@​penielse)
• babel-plugin-proposal-object-rest-spread
  • #​9628 [proposal-object-rest-spread] fix templateLiteral in extractNormalizedKeys (@​pnowak)
• babel-plugin-transform-modules-systemjs
  • #​9639 System modules - Hoist classes like other variables (@​guybedford)
• babel-generator, babel-parser
  • #​9618 Disallow escape sequences in contextual keywords (@​danez)
• babel-helper-split-export-declaration, babel-plugin-transform-modules-commonjs, babel-traverse
  • #​9613 Don't add params of anonymous exported function decls to the outer scope (@​nicolo-ribaudo)
• babel-plugin-transform-parameters, babel-plugin-transform-typescript, babel-types
  • #​9605 [plugin-transform-typescript] Strip type imports used in Enums and object types (@​echenley)
• babel-helper-call-delegate, babel-plugin-transform-parameters
  • #​9601 Don't loose "this" in helper-call-delegate (@​nicolo-ribaudo)
• babel-plugin-proposal-object-rest-spread, babel-plugin-transform-modules-commonjs, babel-traverse, babel-types
  • #​9492 Mark FOO in "var { x: FOO }˝ as a binding, not as a reference (@​nicolo-ribaudo)
• babel-preset-env
  • #​9595 preset-env: Sort versions before determining lowest (@​jridgewell)
• babel-helper-define-map, babel-helper-hoist-variables, babel-parser, babel-plugin-proposal-object-rest-spread, babel-plugin-transform-block-scoping, babel-plugin-transform-destructuring, babel-plugin-transform-modules-systemjs, babel-traverse, babel-types
  • #​9518 Use for..of Object.keys instead of for..in (@​nicolo-ribaudo)

💅 Polish

• babel-parser
  • #​9646 Remove input and length from state (@​danez)
  • #​9645 Reorganize token types and use a map for them (@​danez)
  • #​9591 Remove always false param allowExpressionBody (@​danez)
• babel-standalone, babel-types
  • #​9025 Make babel-standalone an ESModule and enable flow (@​danez)
• babel-generator
  • #​9579 change var name for coherence (@​tanohzana)

🏠 Internal

• Other
  • #​9588 Publish to npm using a GitHub action (@​nicolo-ribaudo)
  • #​9640 Switch from rollup-stream to rollup (@​danez)
  • #​9647 Add WarningsToErrorsPlugin to webpack to avoid missing build problems on CI (@​danez)
  • #​9624 Update dependencies (@​danez)
  • #​9623 Add editorconfig for Makefile (@​danez)
  • #​9587 Update test262 (@​danez)
  • #​9582 Minify bundles on circle for repl (@​danez)
• babel-register
  • #​9678 Remove dependency on home-or-tmp package (@​AmirS)

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