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Generated on Apr 30, 2024 via pnpm

path-to-regexp 0.1.7

Express style path to RegExp utility
Package summary
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MIT
Package created
1 Aug 2012
Version published
28 Jul 2015
Maintainers
5
Total deps
1
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License
MIT

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MIT License

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1 Packages, Including:
path-to-regexp@0.1.7
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Frequently Asked Questions

What does path-to-regexp do?

Path-to-regexp is a powerful npm package that leverages the flexibility of JavaScript's regular expression handling capabilities to transform route or path strings into regular expressions. This can be particularly helpful in designing and decoding URL routes within a web application. For instance, for a URL like /user/:name, path-to-regexp can build a regular expression that extracts variable parts (like the user's name) from the URL string. This Express-style path to RegExp utility is instrumental in parsing dynamic URLs, allowing for more interactive and responsive web navigation.

How do you use path-to-regexp?

To use path-to-regexp, you first need to install it using npm as follows:

npm install path-to-regexp --save

Then, you can import path-to-regexp into your JavaScript file and use its functions.

Here's an example of extracting variables from a path using path-to-regexp:

const { pathToRegexp } = require('path-to-regexp');
const keys = [];
const regexp = pathToRegexp('/user/:name', keys);
const result = regexp.exec('/user/john');
console.log(result[1]); // Outputs: john

In this case, ":name" in the URL becomes a placeholder, and the actual value (in this case "john") can be extracted and used elsewhere in your application.

Moreover, functions like match, parse, and compile provided by path-to-regexp, each serve unique purposes - from matching a path and returning a function for transforming paths into parameters, to parsing a path string into a list of strings/keys, and even generating a path string from parameter data.

Where are the path-to-regexp docs?

Path-to-RegExp's documentation, along with usage examples and additional details about the utility and its functions, can be found directly within its repository on GitHub (https://github.com/pillarjs/path-to-regexp). The README file within the repository serves as the main source of documentation, offering guidance on installation, usage, parameters, and compatibility. For real-time use case scenarios, users can also check out the live demo at express-route-tester (http://forbeslindesay.github.io/express-route-tester/).