#number

Pass two numbers, get a regex-compatible source string for matching ranges. Fast compiler, optimized regex, and validated against more than 2.78 million test assertions. Useful for creating regular expressions to validate numbers, ranges, years, etc.

Get the native JavaScript type of a value, fast. Used by superstruct, micromatch and many others!

Faster brace expansion for node.js. Besides being faster, braces is not subject to DoS attacks like minimatch, is more accurate, and has more complete support for Bash 4.3.

JavaScript/Node.js utility. Returns `true` if the value is a number or string number. Useful for checking regex match results, user input, parsed strings, etc.

Generate random numbers quickly.