An incremental regular expression parser in JavaScript; useful for input validation, RegExp

Generate an index from a directory

micromark extension to support MDX or MDX JS expressions

Pure-JS printf

Escape a regular expression string or pattern.

Check if a value is a regular expression

Regexp acceptor for ECMAScript 2018

Regular expression for matching a shebang line

Tiny helpers for processing regex syntax

Helper function to optimise call expression

Helper which skips types and parentheses

Helper function to replace certain member expressions with function calls

mdast extension to parse and serialize MDX (or MDX.js) expressions

A drop-in replacement for new RegExp() with types

A state machine compiler

Mathematical expression evaluator

Ensure that reserved words are quoted in property accesses

Check if a string is a scoped npm package name

Strip ANSI escape codes from a string

Efficient path tracking and pattern matching for XML/JSON parsers