@babel/generator

Thanks @joelvh, @liuliangsir and @mondeja for your first PRs!

:eyeglasses: Spec Compliance

• babel-helpers, babel-plugin-transform-block-scoping

  • Throw a TypeError when reassigning a const (@nicolo-ribaudo)

:bug: Bug Fix

• babel-parser

  • fix: support string assertion key in assert entries (@JLHwung)

  • fix: disallow import assertions in export without from (@JLHwung)

  • Handle exprAllowed before ObjectLike is parsed (@JLHwung)

  • Refactor yield await classification (@JLHwung)

  • Allows the interface to be used as an Identifier for flow plugin (@sosukesuzuki)

  • [ts] Error on invalid type casts in JSX (@existentialism)

  • [ts] Allow optional binding pattern parameters within types/interfaces (@existentialism)

  • Fix parsing of imports with module string name in flow plugin (@sosukesuzuki)

• babel-parser, babel-types

  • Make assertions optional and update AST spec (@sosukesuzuki)

• babel-template, babel-types

  • fix: babel-types: ImportDeclaration: add assertions (@coderaiser)

• babel-generator

  • Do not use currentColumn to indent comments when retainLines=true (@ian-craig)

• babel-generator, babel-parser

  • Support Import Assertions for re-export statement (@sosukesuzuki)

• babel-plugin-proposal-numeric-separator

  • fix: support bigInt in numeric-separator transform (@JLHwung)

• babel-helper-replace-supers, babel-plugin-transform-classes

  • fix: support optionalCall in replace super handler (@JLHwung)

• babel-standalone

  • packages/babel-standalone: make data-type="module" option avilable without data-presets option (@hirochachacha)

:nail_care: Polish

• babel-compat-data

  • chore: bump compat-table and electron-to-chromium (@JLHwung)

• babel-parser, babel-preset-env

  • Polish parser errors (@JLHwung)

:house: Internal

• Other

  • chore: avoid duplicate coverage data upload (@JLHwung)

  • chore: bump Jest to v26 (@JLHwung)

  • chore: test on node 15 (@JLHwung)

• babel-generator, babel-helper-module-imports, babel-helper-replace-supers, babel-parser, babel-traverse

  • add declare to class properties type annotations (@JLHwung)

• babel-traverse, babel-types

  • Mark ThisExpression and Super as Purish (@nicolo-ribaudo)

• babel-helper-compilation-targets, babel-preset-env

  • Update to Browserslist 4.14.5 (@nicolo-ribaudo)