is-regexp

What is is-regexp?

The is-regexp npm package is a utility that allows you to check if a given value is a regular expression. This can be useful in various scenarios where you need to validate or handle regular expressions specifically.

What are is-regexp's main functionalities?

Check if a value is a regular expression

This feature allows you to determine if a given value is a regular expression. The function returns true if the value is a regular expression and false otherwise.

const isRegexp = require('is-regexp');

console.log(isRegexp(/abc/)); // true
console.log(isRegexp('abc')); // false

Other packages similar to is-regexp

lodash.isregexp

The lodash.isregexp package is a part of the Lodash library that provides a similar functionality to is-regexp. It checks if a value is classified as a RegExp object. Compared to is-regexp, lodash.isregexp is part of a larger utility library, which means it can be more convenient if you are already using Lodash in your project.

is-regex

The is-regex package is another utility that checks if a value is a regular expression. It provides similar functionality to is-regexp but is maintained by a different author and may have different performance characteristics or additional features.

is

The is package is a comprehensive type-checking library that includes a method for checking if a value is a regular expression. It offers a broader range of type-checking utilities compared to is-regexp, making it a more versatile choice if you need to perform various type checks.

README

is-regexp

Check if a value is a regular expression

Install

$ npm install is-regexp

Usage

import isRegexp from 'is-regexp';

isRegexp('unicorn');
//=> false

isRegexp(/unicorn/);
//=> true

isRegexp(new RegExp('unicorn'));
//=> true

FAQ

Why not just use instanceof instead of this package?

Related

• is - Type check values

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