NORAD Alpha-5 designator codec — encode/decode satellite catalog IDs between integers and the 5-character Space-Track format.

Check if a character is a whitespace character

micromark factory to parse markdown space (found in lots of places)

Collapse white space

Check if a character is hexadecimal

Map of named character references from HTML 4

Map of named character references

List of legacy HTML named character references that don’t need a trailing semicolon

Decode named character references

Map of invalid numeric character references to their replacements, according to HTML

An output formatter for markdownlint-cli2 that produces the same output as markdownlint-cli

micromark utility to handle character codes

Parse and stringify space separated tokens

Check the text is ends with period mark.

JSON for humans and machines

micromark utility to classify whether a character is whitespace or punctuation

Determine the East Asian Width of a Unicode character

Convert a string of words to a JavaScript identifier

micromark utility to decode numeric character references

POSIX character classes for creating regular expressions.