The string_decoder module from Node core
Safer Node.js Buffer API
Modern Buffer API polyfill without footguns
Node.js Buffer API, for the browser
ES2015 `Object.assign()` ponyfill
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
Fast deep equal
utility box for ECMAScript language tools
Require module from string
Unpipe a stream from all destinations
Efficient implementation of Levenshtein algorithm with locale-specific collator support.
Base64 encoding/decoding in pure JS
HTTP response freshness testing
Normalize slashes in a file path to be posix/unix-like forward slashes. Also condenses repeat slashes to a single slash and removes and trailing slashes, unless disabled.
Resolve the path of a module like `require.resolve()` but from a given path
Get the command from a shebang
JSDoc parser
Browser-friendly inheritance fully compatible with standard node.js inherits()
Compare strings containing a mix of letters and numbers in the way a human being would in sort order.
CLI arguments parser. Native port of python's argparse.
Fast (and loose) selective `process.env` replacer using js-tokens instead of an AST
parse a url with memoization
Get the native type of a value.
Merge multiple streams into one stream in sequence or parallel.