Limit the number of character allowed in a GraphQL query.

MCP server that checks a social post against a platform's real character limit — X t.co URL weighting, Bluesky graphemes, LinkedIn, Threads, Mastodon. Pure compute, no network.

A Gulp plugin for enforcing a character limit on file paths

Character limit extension for Typix — visual counter with overflow highlight and a useCharacterCount hook

A simple JavaScript module that applies a soft character limit to inputs and textareas.

Map of 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

Decode named character references

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

micromark utility to handle character codes

Run multiple promise-returning & async functions with limited concurrency

micromark utility to classify whether a character is whitespace or punctuation

Basic IP rate-limiting middleware for Express. Use to limit repeated requests to public APIs and/or endpoints such as password reset.

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 whitespace character

Check if a character is a word character