#number

Excel Workbook Manager

Check if a character is alphanumerical

A Micro Library to Increment Lexical Ids

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.

Check if a character is hexadecimal

Check if a character is decimal

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

A Rust crate for producing string representations of numbers, formatted according to international standards

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.