babel-plugin-transform-es2015-unicode-regex

What is babel-plugin-transform-es2015-unicode-regex?

The babel-plugin-transform-es2015-unicode-regex package is a Babel plugin that transforms ES2015 Unicode regexes into equivalent ES5 regexes. This allows developers to use Unicode regex features in environments that do not natively support them.

What are babel-plugin-transform-es2015-unicode-regex's main functionalities?

Transform Unicode Regex

This feature allows you to write Unicode regex patterns using the ES2015 syntax and have them transformed into equivalent ES5-compatible regex patterns. This is useful for ensuring compatibility across different JavaScript environments.

const regex = /\u{1F4A9}/u; // ES2015 Unicode regex
const transformedRegex = new RegExp('\\u{1F4A9}', 'u'); // Transformed to ES5 compatible regex

Other packages similar to babel-plugin-transform-es2015-unicode-regex

regexpu-core

regexpu-core is a package that transforms Unicode-aware regular expressions to ES5-compatible regular expressions. It provides similar functionality to babel-plugin-transform-es2015-unicode-regex but can be used independently of Babel.

regexgen

regexgen is a tool that generates regular expressions from a list of strings. While it does not specifically focus on Unicode transformations, it can be used to create optimized regex patterns that may include Unicode characters.

README

babel-plugin-transform-es2015-unicode-regex

Compile ES2015 unicode regex to ES5

Example

In

var string = "foo💩bar";
var match = string.match(/foo(.)bar/u);

Out

var string = "foo💩bar";
var match = string.match(/foo((?:[\0-\t\x0B\f\x0E-\u2027\u202A-\uD7FF\uE000-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]))bar/);

Installation

npm install --save-dev babel-plugin-transform-es2015-unicode-regex

Usage

Via .babelrc (Recommended)

.babelrc

{
  "plugins": ["transform-es2015-unicode-regex"]
}

Via CLI

babel --plugins transform-es2015-unicode-regex script.js

Via Node API

require("babel-core").transform("code", {
  plugins: ["transform-es2015-unicode-regex"]
});