Regular expressions for rgb, rgba, hex, hexa, hsl & hsla colors

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

A regular expression to match all Emoji-only symbols as per the Unicode Standard.

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

Regular expression for testing if a file path is a windows UNC file path. Can also be used as a component of another regexp via the `.source` property.

Give a regex, get a robust predicate function that tests it against a string.

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

Generate a regex from a string or array of strings.

Regular expression for matching a shebang line

Regular expression for matching ANSI escape codes

Compile regular expressions using named groups to ES5.

Compile Unicode property escapes in Unicode regular expressions to ES5.

detect possibly catastrophic, exponential-time regular expressions

Compile regular expressions using the `s` (`dotAll`) flag to ES5.

Memoize the results of a call to the RegExp constructor, avoiding repetitious runtime compilation of the same string and options, resulting in surprising performance improvements.

Compile regular expressions' unicodeSets (v) flag.

Compile regular expressions using duplicate named groups to index-based groups.

Regular expression for matching astral symbols

Parse regular expressions' unicodeSets (v) flag.

Regular expression for matching file names, with or without extension.