Turn an Express-style path string such as /user/:name into a regular expression.


var pathToRegexp = require('path-to-regexp');

pathToRegexp(path, keys, options)

  • path A string in the express format, an array of such strings, or a regular expression
  • keys An array to be populated with the keys present in the url. Once the function completes, this will be an array of strings.
  • options
    • options.sensitive Defaults to false, set this to true to make routes case sensitive
    • options.strict Defaults to false, set this to true to make the trailing slash matter.
    • options.end Defaults to true, set this to false to only match the prefix of the URL.
var keys = [];
var exp = pathToRegexp('/foo/:bar', keys);
//keys = ['bar']
//exp = /^\/foo\/(?:([^\/]+?))\/?$/i

Live Demo

You can see a live demo of this library in use at express-route-tester.