JSPM

Check if a string has ANSI escape codes

Fastest Levenshtein distance implementation in JS.

Regular expression for matching email addresses

Replace search occurrences with a replacement string.

Calculates similarity between two strings

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

Strip ANSI escape codes from a string

Terminal string styling done right

Escape RegExp special characters

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

Simple wildcard matching

Generate string from a token array by interpolating values.

Test if a value is a string.

Convert between POSIX and Windows paths.

Insert supplied variable values into a format string.

Wordwrap a string with ANSI escape codes

Escape a regular expression string or pattern.

Human-friendly replacements.

Test if a value is a regular expression string.

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

Return a regular expression to parse a regular expression string.

Convert a string to lowercase.

Create a regular expression from a regular expression string.

Allocate a buffer containing a provided string.

Matching IPs using [micromatch][] and [ip-filter][] - glob patterns, RegExp, string or array of globs. Returns matcher function.

Get the native type of a value.

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

Simple string matching / globbing / RegEx matching

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

Replace text patterns with applause.

Returns true if a windows file path has invalid characters.

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

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

Parse JSON with more helpful errors

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

Modify strings, generate sourcemaps

Tagged template string regular expression compiler.

Regular expression for matching HTML comments

Detect the indentation of code (commonjs fork)

ANSI escape codes for manipulating the terminal

Check if a string is an IP address

Replaces strings in a stream.

Strip the final newline character from a string or Uint8Array

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

Get all URLs in a string

Slice a string with ANSI escape codes

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.

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

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

Indent each line in a string

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

Returns true if the value passed is all whitespace.

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

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

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

Customisable string match sorting features

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

ES5 spec-compliant shim for String.prototype.trim

Strip leading whitespace from each line in a string

Regular expression for matching JavaScript comments

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).

[](https://www.npmjs.com/package/levenary) [](https://github.com/tanhauhau/levenary/actions)

Normalize a URL

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

Truncate a string to a specific width in the terminal

Strip redundant indentation and indent the string

Compile regular expressions' unicodeSets (v) flag.

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

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

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

Generate a unique random string

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

Parse regular expressions' unicodeSets (v) flag.

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

LZ-based compression algorithm

Determine the East Asian Width of a Unicode character

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

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

Functions for dealing with a PostgresSQL connection string

Replace text patterns with applause.

The string_decoder module from Node core

mdast utility to get the plain text content of a node

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

Check if a character is alphabetical

a few common utility template tags for ES2015

Convert object keys to camel case

Wildcard matching tools

Parse and stringify URL query strings

Compute ripemd160 of bytes or strings.

Check if a character is decimal

a library that provides a simple and efficient way to match string against glob patterns.

Check if a character is hexadecimal

Get the gzipped size of a string or buffer

Check if a character is alphanumerical

Unpacks the content found within a text, delimited by an opening char and a closing char, e.g., 'Can extract (only the content found here within these parentheses)'

Human-friendly replacements.

Replace text patterns with applause.

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

Create an array by repeating the given value n times.

micromark utility to decode markdown strings

Math and string formula parser.

StringScanner performs lexical scanning operations on a string.

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

Convert a string to lowercase.

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

Convert a string to pascal case (upper camelcase).

Convert object keys from camel case

Strip ANSI color codes from a string. No dependencies.

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

Formatting Date objects as strings since 2013

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

Isomorphic, functional type-checking for Javascript

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

Get the system locale

Various helper utilities

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

Convert a string index to its line and column position

Simple micro templating

Repeat a string - fast

Convert a string to a valid safe filename

Remove wrapping quotes from a string.

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

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

Functional errors with formatted output

Convert a value to a ReadableStream

Useful utilities for working with Uint8Array (and Buffer)

ES2017 spec-compliant String.prototype.padEnd shim.

Strip a substring from the start/end of a string

Terminal string styling with tagged template literals

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

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

Returns `true` if the value is a primitive.

Return the first index at which a given element can be found.

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

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

Remove the trailing spaces from a string.

Check if a string is an IP address

A high performance library to match discontinuous strings

String manipulation functions.

Check if a string is a URL

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

Escape strings for use as JavaScript string literals

Stringify Object as tree structure

Remove leading indentation from ES6 template literals.

fast string hashing function

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

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

Serializes any DOM node into a String

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

String manipulation extensions for Underscore.js javascript library.

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

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

The color gray, in ansi.

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

A simple string template function based on named or indexed arguments

Elegant spinner for interactive CLI apps

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.

Native JS murmur hash implementation

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

Check if a character is a whitespace character

Check if a string is SVG

Check if a character is a word character

Handlebars + Helpers = Fumanchu

Beautiful color gradients in terminal output

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

Jest snapshot serializer that beautifies HTML.

DOMParser.parseFromString for XML with IE8 fallback

Opinionated HTML formatter focused towards making HTML diffs readable.

Reduce function calls in a string, using a callback

ES2017 spec-compliant String.prototype.padStart shim.

Convert Unicode characters to Latin characters using transliteration

Slugify a string

Various helper utilities for working with buffers and binary data

Pure-JS printf

This package includes the [core-js](https://github.com/zloirock/core-js) polyfill for `String#replaceAll`, along with TypeScript typings.

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

Remove any existing casing from a string.

sprintf parser and basic formatter

The color cyan, in ansi.

ES2019 spec-compliant String.prototype.trimLeft shim.

nlcst utility to transform a tree to a string

Convert a string to space case.

The color red, in ansi.

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

Extensible string utility for converting, identifying and flipping string case

remove diacritics from strings

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

ES2019 spec-compliant String.prototype.trimLeft shim.

String encoding utilitlies extracted from TweetNaCl.js

Find lexicographical points between strings

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

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

sprintf formatting targetted for CLI

Math and string formula parser.

Run replace on a string and update it asynchronous

Build and evaluate JavaScript strings safely via tagged template literals

Serialises error object to normal object

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

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

Trim whitespace characters from the beginning and end of a string.

Check if a string only contains alphanumeric characters

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

Convert a string to camel case.

Similar to String#trim() but removes only newlines

Write data to a random temporary file

strings comparison matchers for chai

Zero-dependency unicode-aware string tools

Check if a string is HTML

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

Pad strings to a given length

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

The fast way to check if a string is blank

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

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

String matcher that output the input string replacing the match.

Iterator over lines in a string

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

A pure (functional) version of Joshaven Potter's string_score package which doesn't alter the String prototype.

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

Parse parentheses from a string

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

Get the length of unicode strings

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

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

Escape a string for use in AppleScript

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

Test if an array-like value contains a search value.

Tagged template literal for Sanity.io GROQ-queries

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

slugifies even utf-8 chars!

Regular expression for matching URLs

parse a css color string

alters a string by replacing multiple range fragments in one fast pass

Convert a string into a stream (streams2)

A fully Unicode-aware string reverser written in JavaScript.

A library for finding the most similar word from a list of words, supporting Japanese (including kanji). / 最も似た単語を単語群から検索する日本語(漢字含む)対応のライブラリ

Converts a Buffer/String into a readable stream

String comparison in length constant time

Simple implmentation of Stream.Readable and Stream.Writable holding the data in memory.

A collection of personal utilities to live a happier life

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

Regular expression matching for email addresses. Maintained, configurable, more accurate, and browser-friendly alternative to email-regex. Works in Node v14+ and browsers. Made for Spam Scanner and Forward Email.

small function to append a query string to a URL