JSPM

Fastest Levenshtein distance implementation in JS.

Measure the difference between two strings using the Levenshtein distance algorithm

The most efficient JS implementation calculating the Levenshtein distance, i.e. the difference between two strings.

String and tree edit distance

SIFT distance algorithm

Ukkonens approximate string matching algorithm for finding edit distance similar to Levenshtein

The most efficient JS implementation calculating the Levenshtein distance, i.e. the difference between two strings.

a library for matching human-quality input to a list of potential matches using the Levenshtein distance algorithm

An implementation of weighted Damerau–Levenshtein distance.

Get Jaccard distance between strings.

Calculate string distance using Damerau–Levenshtein method.

Fast String Distance (SIFT) Algorithm

NPM package that calculates synchronously or asynchronously the Damerau-Levenshtein distance between strings

Calculates the Levenshtein (edit) distance between two strings.

A lightweight implementation of the Levenshtein distance algorithm.

Computes the Hamming distance between two sequences.

Calculate the Hamming distance between two strings.

String distance calculator

Finds measure of similarity/distance between two input sets.

Collection of string utilities. Edit-Distances, Search and Data structures. Offers for example trie, levenshtein distance.

Reasonably efficient and concise exact longest common subsequence and minimum edit-distance algorithm implementation for JavaScript

Returns a difference between two strings using soundex, levenshtein distance or both.

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Calculates de pair distance between two strings

Efficient implementation of Levenshtein algorithm with locale-specific collator support.

Search for a malformed string. Think of Levenshtein distance but in search.

Lazy brush - smooth drawing using mouse or finger

ANSI escape codes for styling strings in the terminal

Strip ANSI escape codes from a string

Terminal string styling done right

Regular expression for matching ANSI escape codes

Sort array of strings by Levenshtein (Sift4) distance

Get the visual width of a string - the number of columns required to display it

Escape RegExp special characters

Wordwrap a string with ANSI escape codes

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

Get the native type of a value.

The string_decoder module from Node core

Strip UTF-8 byte order mark (BOM) from a string

Convert a dash/dot/underscore/space separated string to camelCase or PascalCase: `foo-bar` → `fooBar`

Parse JSON with more helpful errors

Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data.

Get a stream as a string, Buffer, ArrayBuffer or array

ANSI escape codes for manipulating the terminal

Modify strings, generate sourcemaps

Returns true if a string has an extglob.

Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet

Slice a string with ANSI escape codes

Strip the final newline character from a string or Uint8Array

prelude.ls is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, LiveScript.

Heuristic Distance/Similarity Between Strings (sift4 and levenshtein distance)

Compare strings containing a mix of letters and numbers in the way a human being would in sort order.

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

Matches strings against configurable strings, globs, regular expressions, and/or functions

Indent each line in a string

Convert a camelized string into a lowercased one with a custom separator: unicornRainbow → unicorn_rainbow

ES5 spec-compliant shim for String.prototype.trim

Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Parse String to Number based on configuration

Finds degree of similarity between strings, based on Dice's Coefficient, which is mostly better than Levenshtein distance.

Get the real length of a string - by correctly counting astral symbols and ignoring ansi escape codes

A robust HTML entities encoder/decoder with full Unicode support.

Querystringify - Small, simple but powerful query string parser.

Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs).

Normalize a URL

Truncate a string to a specific width in the terminal

Strip leading whitespace from each line in a string

A JavaScript library for escaping CSS strings and identifiers while generating the shortest possible ASCII-only output.

Compile regular expressions' unicodeSets (v) flag.

Strip redundant indentation and indent the string

Small footprint URL parser that works seamlessly across Node.js and browser environments

Generate a unique random string

Returns true if a value exists, false if empty. Works with deeply nested values using object paths.

A robust & optimized `String.prototype.repeat` polyfill, based on the ECMAScript 6 specification.

Get the shortest leading whitespace from lines in a string

Robustly get an object's own property keys (strings and symbols), including non-enumerables when possible

Generate a cryptographically strong random string

Detect the indentation of code

Repeat the given string n times. Fastest implementation for repeating a string.

A robust polyfill for the `CSS.escape` utility method as defined in CSSOM.

Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.

Trim newlines from the start and/or end of a string

Get the visual width of the widest line in a string - the number of columns required to display it

mdast utility to get the plain text content of a node

Determine the East Asian Width of a Unicode character

a few common utility template tags for ES2015

A robust & optimized `String.prototype.includes` polyfill, based on the ECMAScript 6 specification.

Check if a string has ANSI escape codes

Convert object keys to camel case

Parse regular expressions' unicodeSets (v) flag.

Wildcard matching tools

Functions for dealing with a PostgresSQL connection string

LZ-based compression algorithm

Parse and stringify URL query strings

Check if a character is decimal

Get the gzipped size of a string or buffer

Check if a character is alphanumerical

Check if a character is hexadecimal

Calculate hamming distance for string and integer

Compute ripemd160 of bytes or strings.

Easy way to split a string on a given character unless it's quoted or escaped.

CommonJS version - The smallest and fastest command-line coloring package on the internet

Math and string formula parser.

Check if a character is alphabetical

Convert a string to pascal case (upper camelcase).

Convert milliseconds to a human readable string: `1337000000` → `15d 11h 23m 20s`

Convert object keys from camel case

micromark utility to decode markdown strings

A module that parses a string as regular expression and returns the parsed value.

Compare strings containing a mix of letters and numbers in the way a human being would in sort order.

Formatting Date objects as strings since 2013

Create an array by repeating the given value n times.

Hashing made simple. Get the hash of a buffer/string/stream/file.

Split a string on the first occurance of a given separator

Get the system locale

Isomorphic, functional type-checking for Javascript

Simple micro templating

Convert a string index to its line and column position

String manipulation library

Convert a string to a valid safe filename

Remove wrapping quotes from a string.

Mapping between standard locale identifiers and Windows locale identifiers (LCID)

An LCS Implementaion for Arrays and Strings

Compare alphanumeric strings the same way a human would, using a natural order algorithm

Various helper utilities

Useful utilities for working with Uint8Array (and Buffer)

Functional errors with formatted output

Convert a value to a ReadableStream

Repeat a string - fast

The smallest and fastest command-line coloring package on the internet

ES2017 spec-compliant String.prototype.padEnd shim.

Convert a string/promise/array/iterable/asynciterable/buffer/typedarray/arraybuffer/object into a stream

Trim a consecutively repeated substring: foo--bar---baz → foo-bar-baz

Terminal string styling with tagged template literals

Functions that surround a string with ansicolor codes so it prints in color.

Returns `true` if the value is a primitive.

Simple wildcard matching

Remove the trailing spaces from a string.

Strip a substring from the start/end of a string

Capitalize every word in a string: `unicorn cake` → `Unicorn Cake`

Stringify Object as tree structure

Serializes any DOM node into a String

hast utility to get the plain-text value of a node

Lightweight and performant natural sorting of arrays and collections by differentiating between unicode characters, numbers, dates, etc.

Check if a string is a URL

Escape strings for use as JavaScript string literals

The color gray, in ansi.

Remove leading indentation from ES6 template literals.

Strip a byte order mark (BOM) from a string.

Iterate any iterable JS value. Works robustly in all environments, all versions.

Returns true if a windows file path has invalid characters.

Pluralize a word

Stringify is to `eval` as `JSON.stringify` is to `JSON.parse`

A simple string template function based on named or indexed arguments

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

fast string hashing function

Newline character converter

Text diff algorithm based on 'An O(NP) Sequence Comparison Algorithm' from Sun Wu, Udi Manber and Gene Myers

Compare Strings Similarity Based on Levenshtein Distance Algorithm

Native JS murmur hash implementation

Check if a character is a whitespace character

String manipulation extensions for Underscore.js javascript library.

hast utility to get the plain-text value of a node according to the `innerText` algorithm

Parse JavaScript one character at a time to look for snippets in Templates. This is not a validator, it's just designed to allow you to have sections of JavaScript delimited by brackets robustly.

Check if a character is a word character

How similar are these two strings?

Check if a string is SVG

Elegant spinner for interactive CLI apps

Find multiple RegExp matches in a string

Reduce function calls in a string, using a callback

Regular expression for matching HTML comments

Opinionated HTML formatter focused towards making HTML diffs readable.

Beautiful color gradients in terminal output

Pure-JS printf

DOMParser.parseFromString for XML with IE8 fallback

Jest snapshot serializer that beautifies HTML.

Convert Unicode characters to Latin characters using transliteration

Slugify a string

A robust & optimized `String.fromCodePoint` polyfill, based on the ECMAScript 6 specification.

Remove any existing casing from a string.

Right pad a string with zeros or a specified string. Fastest implementation.

Returns true if a file path does not contain any invalid characters.

sprintf parser and basic formatter

Various helper utilities for working with buffers and binary data

ES2019 spec-compliant String.prototype.trimLeft shim.

The color cyan, in ansi.

The color red, in ansi.

Extensible string utility for converting, identifying and flipping string case

A lightning-fast implementation of the Levenshtein distance algorithm. Written in AssemblyScript, compiled to WebAssembly, and optimized for speed.

ES2017 spec-compliant String.prototype.padStart shim.

Check if a string is an IP address

remove diacritics from strings

Returns true if the value passed is all whitespace.

ES2019 spec-compliant String.prototype.trimLeft shim.

String encoding utilitlies extracted from TweetNaCl.js

Convert a string to space case.

nlcst utility to transform a tree to a string

Returns `true` if an array has a glob pattern.

sprintf formatting targetted for CLI

Convert HTML entities to HTML characters, e.g. `>` converts to `>`.

Math and string formula parser.

String formatting inspired by Python's str.format()

Serialises error object to normal object

A robust & optimized `String.prototype.codePointAt` polyfill, based on the ECMAScript 6 specification.

Check if a string only contains alphanumeric characters

Lightweight format utility for the browser, based on util.format().

Convert efficiently index to/from line-column in a string

Convert a string to camel case.

Write data to a random temporary file

strings comparison matchers for chai

JavaScript port of the fast Damerau-Levenshtein string distance calculation algorithm used in Git

Zero-dependency unicode-aware string tools

Similar to String#trim() but removes only newlines

Get a pretty output of the original, minified, gzipped size of a string or buffer: 130 B → 91 B → 53 B (gzip)

Check if a string is HTML

Replace search occurrences with a replacement string.

Test if a value is a string.

Base64 and base64url to string or arraybuffer, and back. Node, Deno or browser.

Ansi codes, figlet fonts, and ascii art. 100% JS

parses number and unit, '20px' into [20, 'px']

Insert supplied variable values into a format string.

Escape a regular expression string or pattern.

Iterator over lines in a string

Test if a value is a regular expression string.

Convert HTML/XML source code or DOM nodes to React elements

Returns true if the given number is odd, and is an integer that does not exceed the JavaScript MAXIMUM_SAFE_INTEGER.

Convert between POSIX and Windows paths.

Parse parentheses from a string

Convert a camelized/dasherized/underscored string into a humanized one: `fooBar-Baz_Faz` → `Foo bar baz faz`

Generate string from a token array by interpolating values.

Tokenize a string into an array of string parts and format identifier objects.

Get a property from an object using dot (object path) notation.

Consume a stream of data into a binary Buffer as efficiently as possible

Create a regular expression from a regular expression string.

Get the length of unicode strings

Escape a string for use in AppleScript

easier than regex string matching patterns for urls and other strings. turn strings into data or data into strings.

slugifies even utf-8 chars!

Return a regular expression to parse a regular expression string.

Contains some util methods for converting numbers into words, ordinal words and ordinal numbers.

Regular expression for matching URLs

Tagged template literal for Sanity.io GROQ-queries

The fast way to check if a string is blank

Allocate a buffer containing a provided string.

Pad strings to a given length

Split string by any separator excluding brackets, quotes and escaped characters

A robust & character encoding–agnostic JavaScript implementation of the `Quoted-Printable` content transfer encoding as defined by RFC 2045.

parse a css color string

Strip ANSI color codes from a string. No dependencies.

Left pad a string with zeros or a specified string. Fastest implementation.