ES6 Unicode regular expression transpiler

ES6:

enable s (dotAll) flag

enable Unicode property escapes (\p{…} and \P{…}

Transpiled to ES5: (run code, permalink)

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/);
console.log(match[1]);
// → '𝌆'

About this tool

This tool uses regexpu to transpile ES6 Unicode regular expressions (with a u flag) to equivalent ES5.

The Unicode property escapes functionality is based on a proposal and may or may not reflect what eventually gets specified. The same applies for the s (dotAll) flag.