@babel/helper-call-delegate

:eyeglasses: Spec Compliance

• babel-parser

  • Add readonly to TypeScript type modifier (@tanhauhau)

  • TypeScript Constant contexts (@tanhauhau)

  • Update identifier parsing per Unicode v12 (@mathiasbynens)

  • Allow any reserved word in export {} from specifiers (@danez)

  • [TS] Disallow type casts in arrow parameters (@nicolo-ribaudo)

  • Refactor parsing object members (@danez)

  • Disallow duplicate params in methods (@danez)

  • Treat for loop body as part of loop scope (@danez)

• babel-parser, babel-plugin-transform-typescript

  • 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

  • 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

  • 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

  • Introduce scope tracking in the parser (@danez)

:rocket: 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

  • Update to core-js@3 (@zloirock)

• babel-template

  • Add %%placeholders%% support to @babel/template (@nicolo-ribaudo)

• babel-parser, babel-plugin-proposal-partial-application

  • Partial application plugin (@byara)

• babel-generator, babel-helper-create-class-features-plugin, babel-helpers, babel-plugin-proposal-private-methods

  • Private Static Class Methods (Stage 3) (@tim-mc)

• babel-generator, babel-types

  • Add placeholders support to @babel/types and @babel/generator (@nicolo-ribaudo)

• babel-parser

  • Add parser support for placeholders (@nicolo-ribaudo)

• babel-generator, babel-parser, babel-plugin-syntax-partial-application, babel-types

  • Partial Application Syntax: Stage 1 (@byara)

:bug: Bug Fix

• babel-helper-create-class-features-plugin, babel-helper-replace-supers, babel-plugin-proposal-private-methods

  • Fix super Method Calls in Class Private Methods (@tim-mc)

• babel-parser

  • Correctly parse TS TypeAssertions around arrow functions (@danez)

  • Fix scope check for 2nd+ lexical bindings (@danez)

  • [TS] Correctly forget awaits after parsing async arrows with type args (@nicolo-ribaudo)

  • Fix strict mode prescanning with EmptyStatement (@danez)

• babel-core, babel-plugin-transform-for-of

  • Correctly preserve reference to array in for-of loop (@danez)

• babel-plugin-transform-typescript

  • [plugin-transform-typescript] Fix transpiling of TS abstract classes with decorators (@agoldis)

• babel-traverse, babel-types

  • Fix TSFunctionType visitors definition (@penielse)

• babel-plugin-proposal-object-rest-spread

  • [proposal-object-rest-spread] fix templateLiteral in extractNormalizedKeys (@pnowak)

• babel-plugin-transform-modules-systemjs

  • System modules - Hoist classes like other variables (@guybedford)

• babel-generator, babel-parser

  • Disallow escape sequences in contextual keywords (@danez)

• babel-helper-split-export-declaration, babel-plugin-transform-modules-commonjs, babel-traverse

  • 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

  • [plugin-transform-typescript] Strip type imports used in Enums and object types (@echenley)

• babel-helper-call-delegate, babel-plugin-transform-parameters

  • 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

  • Mark FOO in "var { x: FOO }˝ as a binding, not as a reference (@nicolo-ribaudo)

• babel-preset-env

  • 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

  • Use for..of Object.keys instead of for..in (@nicolo-ribaudo)

:nail_care: Polish

• babel-parser

  • Remove input and length from state (@danez)

  • Reorganize token types and use a map for them (@danez)

  • Remove always false param allowExpressionBody (@danez)

• babel-standalone, babel-types

  • Make babel-standalone an ESModule and enable flow (@danez)

• babel-generator

  • change var name for coherence (@tanohzana)

:house: Internal

• Other

  • Publish to npm using a GitHub action (@nicolo-ribaudo)

  • Switch from rollup-stream to rollup (@danez)

  • Add WarningsToErrorsPlugin to webpack to avoid missing build problems on CI (@danez)

  • Update dependencies (@danez)

  • Add editorconfig for Makefile (@danez)

  • Update test262 (@danez)

  • Minify bundles on circle for repl (@danez)

• babel-register

  • Remove dependency on home-or-tmp package (@AmirS)