@babel/compat-data

:eyeglasses: Spec Compliance

• babel-plugin-transform-block-scoping

  • fix: check constant violation inside loops (@nicolo-ribaudo)

• babel-helpers, babel-plugin-proposal-destructuring-private, babel-plugin-proposal-object-rest-spread, babel-plugin-transform-destructuring

  • Disallow rest object destructuring of null/undefined (@nicolo-ribaudo)

:bug: Bug Fix

• babel-plugin-transform-react-jsx-development, babel-plugin-transform-typescript, babel-types

  • Fix: properly scope variables in TSModuleBlock (@The-x-Theorist)

• babel-plugin-transform-destructuring, babel-plugin-transform-react-constant-elements, babel-traverse

  • fix: mark var declarations in loops as not constant (@nicolo-ribaudo)

• babel-helper-string-parser, babel-parser, babel-types

  • Never throw for invalid escapes in tagged templates (@nicolo-ribaudo)

• babel-generator, babel-parser

  • Improve module expression parsing/printing (@JLHwung)

• babel-plugin-transform-destructuring

  • Fix holes handling in optimized array destructuring (@nicolo-ribaudo)

:nail_care: Polish

• babel-cli, babel-core, babel-generator, babel-helper-create-class-features-plugin, babel-helper-fixtures, babel-helper-simple-access, babel-helper-transform-fixture-test-runner, babel-helpers, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-external-helpers, babel-plugin-proposal-async-do-expressions, babel-plugin-proposal-async-generator-functions, babel-plugin-proposal-class-properties, babel-plugin-proposal-class-static-block, babel-plugin-proposal-decorators, babel-plugin-proposal-destructuring-private, babel-plugin-proposal-do-expressions, babel-plugin-proposal-duplicate-named-capturing-groups-regex, babel-plugin-proposal-dynamic-import, babel-plugin-proposal-function-bind, babel-plugin-proposal-function-sent, babel-plugin-proposal-json-strings, babel-plugin-proposal-logical-assignment-operators, babel-plugin-proposal-nullish-coalescing-operator, babel-plugin-proposal-object-rest-spread, babel-plugin-proposal-optional-chaining, babel-plugin-proposal-partial-application, babel-plugin-proposal-pipeline-operator, babel-plugin-proposal-private-methods, babel-plugin-proposal-private-property-in-object, babel-plugin-proposal-record-and-tuple, babel-plugin-syntax-typescript, babel-plugin-transform-arrow-functions, babel-plugin-transform-async-to-generator, babel-plugin-transform-block-scoping, babel-plugin-transform-classes, babel-plugin-transform-computed-properties, babel-plugin-transform-destructuring, babel-plugin-transform-duplicate-keys, babel-plugin-transform-exponentiation-operator, babel-plugin-transform-flow-comments, babel-plugin-transform-flow-strip-types, babel-plugin-transform-for-of, babel-plugin-transform-function-name, babel-plugin-transform-jscript, babel-plugin-transform-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-systemjs, babel-plugin-transform-modules-umd, babel-plugin-transform-new-target, babel-plugin-transform-object-super, babel-plugin-transform-parameters, babel-plugin-transform-proto-to-assign, babel-plugin-transform-react-constant-elements, babel-plugin-transform-react-inline-elements, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx-self, babel-plugin-transform-react-jsx, babel-plugin-transform-react-pure-annotations, babel-plugin-transform-regenerator, babel-plugin-transform-runtime, babel-plugin-transform-shorthand-properties, babel-plugin-transform-spread, babel-plugin-transform-strict-mode, babel-plugin-transform-template-literals, babel-plugin-transform-typeof-symbol, babel-plugin-transform-typescript, babel-plugin-transform-unicode-escapes, babel-preset-env, babel-preset-react, babel-preset-typescript, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime, babel-traverse

  • Improve comments generation (@liuxingbaoyu)

• babel-cli, babel-core, babel-generator, babel-helper-fixtures, babel-helper-transform-fixture-test-runner, babel-plugin-transform-destructuring, babel-plugin-transform-modules-commonjs, babel-traverse

  • Improve source map generation (@liuxingbaoyu)

:house: Internal

• Other

  • Run test262 again (@nicolo-ribaudo)

• babel-compat-data, babel-preset-env

  • Internally rename proposal-* to transform-* in preset-env (@nicolo-ribaudo)