@babel/plugin-syntax-unicode-sets-regex

What is @babel/plugin-syntax-unicode-sets-regex?

The @babel/plugin-syntax-unicode-sets-regex package allows Babel to parse regular expressions that use the Unicode property escapes syntax within character classes. This is part of the ECMAScript 2021 specification. The plugin itself does not transform these regular expressions; it only enables Babel to understand them during the parsing phase, which is useful when working with next-generation JavaScript features.

What are @babel/plugin-syntax-unicode-sets-regex's main functionalities?

Parsing Unicode property escapes in regex

This feature allows Babel to parse regular expressions that include Unicode property escapes, such as matching characters of a specific script like Hiragana. The 'u' flag is necessary for these expressions.

/\p{Script=Hiragana}+/u

Other packages similar to @babel/plugin-syntax-unicode-sets-regex

@babel/plugin-transform-unicode-regex

This package transforms Unicode regular expressions into equivalent ES5 syntax. It complements @babel/plugin-syntax-unicode-sets-regex by not only allowing Babel to parse but also transform Unicode regexes, making it more suitable for projects targeting older environments.

regexpu-core

A library that transforms ES2015 Unicode regular expressions into ES5. It's similar to @babel/plugin-transform-unicode-regex but can be used outside of the Babel ecosystem. It provides a lower-level API for working directly with regular expressions.

README

@babel/plugin-syntax-unicode-sets-regex

Parse regular expressions' unicodeSets (v) flag.

See our website @babel/plugin-syntax-unicode-sets-regex for more information.

Install

Using npm:

npm install --save-dev @babel/plugin-syntax-unicode-sets-regex

or using yarn:

yarn add @babel/plugin-syntax-unicode-sets-regex --dev

Changelog

v7.18.6 (2022-06-27)

:eyeglasses: Spec Compliance

• babel-parser
  • #14650 [ts] Disallow property access after instantiation expression (@nicolo-ribaudo)
  • #14636 [ts] Allow ...<...> followed by newline or binary operator (@nicolo-ribaudo)
• babel-generator, babel-parser, babel-preset-env, babel-template
  • #14668 JSON modules should be imported with default (@JLHwung)

:bug: Bug Fix

• babel-helper-remap-async-to-generator, babel-plugin-proposal-async-generator-functions
  • #14391 Transform await in computed class keys (@Yokubjon-J)
• babel-plugin-transform-parameters
  • #14694 fix: preserve function params type if possible (@magic-akari)
• babel-core
  • #14583 fix: Memory leak when deep cloning in babel-core (@liuxingbaoyu)
• babel-core, babel-helper-check-duplicate-nodes, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-proposal-destructuring-private, babel-plugin-proposal-optional-chaining, babel-plugin-transform-runtime
  • #14663 Fix import { types } from "@babel/core" with native ESM (@nicolo-ribaudo)

:house: Internal

• babel-standalone
  • #14697 Add proposal-unicode-sets-regex to @babel/standalone (@nicolo-ribaudo)
• Other
  • #14687 chore: Update bench baselines (@liuxingbaoyu)
• babel-generator, babel-types
  • #14685 enable TS compiler option: strictBindCallApply (@JLHwung)
• babel-code-frame, babel-core, babel-generator, babel-helper-annotate-as-pure, babel-helper-builder-binary-assignment-operator-visitor, babel-helper-builder-react-jsx, babel-helper-check-duplicate-nodes, babel-helper-compilation-targets, babel-helper-create-class-features-plugin, babel-helper-create-regexp-features-plugin, babel-helper-define-map, babel-helper-explode-assignable-expression, babel-helper-fixtures, babel-helper-function-name, babel-helper-hoist-variables, babel-helper-member-expression-to-functions, babel-helper-module-imports, babel-helper-module-transforms, babel-helper-optimise-call-expression, babel-helper-plugin-test-runner, babel-helper-plugin-utils, babel-helper-remap-async-to-generator, babel-helper-replace-supers, babel-helper-simple-access, babel-helper-split-export-declaration, babel-helper-transform-fixture-test-runner, babel-helper-validator-option, babel-helper-wrap-function, babel-helpers, babel-highlight, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-external-helpers, babel-plugin-proposal-async-generator-functions, babel-plugin-proposal-class-static-block, babel-plugin-proposal-decorators, babel-plugin-proposal-destructuring-private, babel-plugin-proposal-function-bind, babel-plugin-proposal-function-sent, babel-plugin-proposal-json-strings, 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-property-in-object, babel-plugin-proposal-record-and-tuple, babel-plugin-syntax-typescript, babel-plugin-transform-block-scoped-functions, 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-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-systemjs, babel-plugin-transform-modules-umd, babel-plugin-transform-object-super, babel-plugin-transform-parameters, babel-plugin-transform-property-mutators, babel-plugin-transform-proto-to-assign, babel-plugin-transform-react-constant-elements, babel-plugin-transform-react-display-name, babel-plugin-transform-react-inline-elements, babel-plugin-transform-react-jsx-compat, babel-plugin-transform-react-jsx-source, babel-plugin-transform-react-jsx, babel-plugin-transform-runtime, babel-plugin-transform-typescript, babel-plugin-transform-unicode-escapes, babel-preset-env, babel-preset-typescript, babel-standalone, babel-template, babel-traverse, babel-types
  • #14601 enable noImplicitAny (@JLHwung)
• babel-core, babel-helper-transform-fixture-test-runner, babel-plugin-transform-destructuring
  • #14659 Run Babel asynchronously in fixtures (@nicolo-ribaudo)