Test Packages

Get the native type of a value.

Regular expression for matching ANSI escape codes

Get the first fulfilled promise that satisfies the provided testing function

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet

Returns true if a value is a plain object, array or function.

Regular expression for matching a shebang line

Match balanced character pairs, like "{" and "}"

Returns true if a string has an extglob.

Extended glob support for JavaScript. Adds (almost) the expressive power of regular expressions to glob patterns.

Check if a value is an object

Get details about the current Continuous Integration environment

Detect if the current environment is a CI server

Check if a string has ANSI escape codes

Create a javascript regular expression for matching everything except for the given string.

Generate a regex from a string or array of strings.

invariant

Check if a value is a plain object

Regular expression for matching IP addresses (IPv4 & IPv6)

Delightful JavaScript Testing.