@babel/generator

:eyeglasses: Spec Compliance

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

  • Fix evaluation order with object spread, 2 (@jridgewell)

  • Fix evaluation order with object spread (@Zzzen)

• babel-helper-replace-supers, babel-plugin-proposal-class-properties, babel-plugin-transform-classes

  • Super property eval order (@jridgewell)

:rocket: New Feature

• babel-traverse, babel-types

  • Adding createFlowUnionType in place of createUnionTypeAnnotation without breaking change (@Beraliv)

:bug: Bug Fix

• babel-helper-create-class-features-plugin, babel-helpers, babel-plugin-transform-modules-commonjs, babel-preset-env

  • Fix helpers.unsupportedIterableToArray for Map and Set (@ChintanAcharya)

• babel-traverse

  • handle objectMethod in scope.isPure (@Zzzen)

• babel-plugin-transform-typescript

  • Throw error for TypeScript declare const enum (@dosentmatter)

• babel-compat-data

  • chore: add node.js 14 support data (@JLHwung)

• babel-parser

  • Set exprAllowed to false for star token (@existentialism)

  • fix: disallow expression after binding identifier of (@JLHwung)

  • fix: report missing plugins on type exports (@JLHwung)

  • fix: do not push new token context when function is following dot/questionDot (@JLHwung)

• babel-helper-create-class-features-plugin, babel-plugin-proposal-class-properties

  • Fix redeclaring private in nested class's superClass (@jridgewell)

  • Fix nested classes reference private fields (@jridgewell)

• babel-traverse, babel-types

  • transform-spread: create TS types (not Flow) when using TS (@Beraliv)

• babel-standalone

  • chore: update stage preset in babel-standalone (@JLHwung)

• babel-plugin-transform-runtime

  • fix: replace backslashes with forward slashes from resolved path for … (@johannes-z)

• babel-generator, babel-plugin-proposal-decorators, babel-plugin-proposal-pipeline-operator, babel-plugin-proposal-throw-expressions, babel-plugin-transform-async-to-generator

  • Unify parens printing for postfix-like expressions (@nicolo-ribaudo)

:nail_care: Polish

• babel-parser

  • Add some parser missing plugins errors (@JLHwung)

  • fix: report missing plugins on type exports (@JLHwung)

• babel-core

  • polish: recommend preset for js extensions (@JLHwung)

  • fix: add classPrivateProperties and classPrivateMethods to missing plugin helper (@JLHwung)

:memo: Documentation

• babel-parser

  • docs: update AST spec (@JLHwung)

• Other

  • Add note about experimental nature of @babel/eslint-* packages (@kaicataldo)

  • contributing.md updates [skip ci] (@hzoo)

:house: Internal

• babel-compat-data, babel-preset-env

  • Update compat table script (@nicolo-ribaudo)

  • Update compat data (@JLHwung)

• Other

  • Canary build of packages using CodeSandbox CI + mini repl (@hzoo)

  • chore: test against node.js 14 (@JLHwung)

  • remove < x.y.z engines specification (@JLHwung)

  • chore: remove included proposal plugins (@JLHwung)

  • chore: upgrade @babel/* deps (@JLHwung)

• babel-node

  • refactor(babel-node): Refactor babel-node tests configuration (@arku)

:running_woman: Performance

• babel-helpers, babel-plugin-proposal-class-properties, babel-plugin-proposal-decorators, babel-plugin-transform-classes, babel-plugin-transform-function-name, babel-plugin-transform-parameters, babel-plugin-transform-react-jsx, babel-plugin-transform-runtime, babel-plugin-transform-typescript, babel-preset-env

  • Speed up the createSuper helper (@jridgewell)