regexpu-core

What is regexpu-core?

The regexpu-core package is a utility that helps in transforming Unicode-aware regular expressions into ES5-compatible versions. This is particularly useful when you want to ensure your regular expressions work across environments that may not fully support ES6 Unicode features.

What are regexpu-core's main functionalities?

Transform Unicode regular expressions

This feature allows you to transform a Unicode regular expression into an ES5-compatible version. The example shows how to transform a pattern that matches any letter using Unicode property escapes.

const rewritePattern = require('regexpu-core');
const pattern = rewritePattern('\\p{L}', 'u');
console.log(pattern); // Transformed pattern that matches any letter

Use with flags

This feature enables the transformation of Unicode regular expressions with specific flags. In the example, the 'useUnicodeFlag' option is used to indicate that the Unicode flag should be preserved in the transformed pattern.

const rewritePattern = require('regexpu-core');
const pattern = rewritePattern('\\p{L}', 'u', { 'useUnicodeFlag': true });
console.log(pattern); // Transformed pattern with the Unicode flag enabled

Other packages similar to regexpu-core

xregexp

XRegExp provides augmented, extensible regular expressions. It includes support for additional syntax, flags, and methods beyond what is available in native JavaScript RegExp. It is similar to regexpu-core in that it enhances regular expressions, but it offers a broader set of features and an extended syntax.

regexp-tree

regexp-tree is a regular expression processor, which includes a parser, a regexp transformer, and an optimizer. It is similar to regexpu-core in its ability to transform regular expressions, but it also provides optimization capabilities and a more comprehensive analysis and manipulation API.