Returns true if the given string is a POSIX bracket expression (POSIX character class).

Cheap structural priors for the runtime pipeline: character class, segmentation, known-format detection. Pure functions, no ML.

Map of named character references

Decode named character references

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

Map of named character references from HTML 4

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

micromark utility to handle character codes

micromark utility to classify whether a character is whitespace or punctuation

micromark utility to decode numeric character references

POSIX character classes for creating regular expressions.

Get the line and column number of a specific character in a string

A regex to match any full character, considering weird character ranges.

Check if a character is a word character

Check if a character is a whitespace character

Check if the character represented by a given Unicode code point is fullwidth

Detect the dominant newline character of a string

Check if a character is hexadecimal

The Yeoman character in your CLI. Like wat.

Check if a character is alphanumerical