JSPM

Match the case of `value` to that of `base`

Match substrings on the left or right of a given index, ignoring whitespace

JavaScript replaceLast function - Replaces last match for pattern in string with replacement

A regex to match astral symbols that supports unicode strings.

Get all the matches for a regular expression in a string.

match-string is a javascript function who return a regexp for match a string with all of his accents possible

Replace strings in webpack modules, with configurable apply-stage and match-count requirements.

replace strings that match a particular pattern with a React Component, recursively

Generate a random string match a given regular expression, suitable for mocking strings.

Get the line number for each regex match found in a string.

Regular expression for matching ANSI escape codes

Advanced RegExp assertions for Chai.js

match the string

Validates given IPs (IPv4 and IPv6) using [micromatch][] - glob patterns, RegExp, string or array of globs. If match returns the IP, otherwise null.

A collection of string matching algorithms built with React Select in mind

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

Convert strings to match a pattern

Find multiple RegExp matches in a string

a search util that gives match strength of a query against a sentence

`String.prototype.matchAll` ponyfill.

A React component for finding matches within a split string.

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

Match Emoji combinations according to unicode emoji specification

ANSI escape codes for styling strings in the terminal

The string_decoder module from Node core

Replace all substring matches in a string

Replace search occurrences with a replacement string.

String#replace for React components

Detect the indentation of code

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

Split a string on the first occurance of a given separator

Returns true if a string has an extglob.

Measure the difference between two strings using the Levenshtein distance algorithm

Asynchronous String.prototype.replace()

Yet another javascript fuzzy matching library

Pluralize a word

A function to extract any colors from a string

Fuzzy filtering and string similarity scoring - compatible with fuzzaldrin

String Tokenization Library for JavaScript

Newline character converter

Check if a string has ANSI escape codes

Fastest Levenshtein distance implementation in JS.

Replace search occurrences with a replacement string.

Regular expression for matching email addresses

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

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

Escape RegExp special characters

Simple wildcard matching

Generate string from a token array by interpolating values.

Escape a regular expression string or pattern.

Test if a value is a string.

Wordwrap a string with ANSI escape codes

Insert supplied variable values into a format string.

Human-friendly replacements.

Test if a value is a regular expression string.

Convert between POSIX and Windows paths.

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

Return a regular expression to parse a regular expression string.

Create a regular expression from a regular expression string.

Convert a string to lowercase.

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

Allocate a buffer containing a provided string.

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

Returns true if a windows file path has invalid characters.

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

Replace text patterns with applause.

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.

Tagged template string regular expression compiler.

Modify strings, generate sourcemaps

Detect the indentation of code (commonjs fork)

Regular expression for matching HTML comments

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.

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

Indent each line in a string

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

Customisable string match sorting features

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

Regular expression for matching JavaScript comments

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

Strip leading whitespace from each line in a string

ES5 spec-compliant shim for String.prototype.trim

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

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).

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

Querystringify - Small, simple but powerful query string parser.

[](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

Compile regular expressions' unicodeSets (v) flag.

Strip redundant indentation and indent the string

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

Generate a unique 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.

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

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

Parse regular expressions' unicodeSets (v) flag.

LZ-based compression algorithm

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

Determine the East Asian Width of a Unicode character

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

Replace text patterns with applause.

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

Functions for dealing with a PostgresSQL connection string

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.

Wildcard matching tools

a few common utility template tags for ES2015

Convert object keys to camel case

Compute ripemd160 of bytes or strings.

Check if a character is alphabetical

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

Check if a character is decimal

Parse and stringify URL query strings

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)'

Check if a character is hexadecimal

Get the gzipped size of a string or buffer

Human-friendly replacements.

Check if a character is alphanumerical

Replace text patterns with applause.

micromark utility to decode markdown strings

StringScanner performs lexical scanning operations on a string.

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

Math and string formula parser.

Create an array by repeating the given value n times.

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

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

Convert a string to lowercase.

Convert object keys from camel case

Convert a string to pascal case (upper camelcase).

Strip ANSI color codes from a string. No dependencies.

Formatting Date objects as strings since 2013

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.

Isomorphic, functional type-checking for Javascript

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

Get the system locale

Convert a string index to its line and column position

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

Various helper utilities

Convert a string to a valid safe filename

Simple micro templating

Remove wrapping quotes from a string.

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

Repeat a string - fast

Functional errors with formatted output

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

Convert a value to a ReadableStream

ES2017 spec-compliant String.prototype.padEnd shim.

Useful utilities for working with Uint8Array (and Buffer)

Terminal string styling with tagged template literals

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

Strip a substring from the start/end of a string

Returns `true` if the value is a primitive.

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

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

Check if a string is a URL

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

String manipulation functions.

Escape strings for use as JavaScript string literals

Remove leading indentation from ES6 template literals.

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

Stringify Object as tree structure

fast string hashing function

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

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

Serializes any DOM node into a String

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

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

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

The color gray, in ansi.

String manipulation extensions for Underscore.js javascript library.

A simple string template function based on named or indexed arguments

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.

Elegant spinner for interactive CLI apps

Native JS murmur hash implementation

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

Handlebars + Helpers = Fumanchu

Check if a character is a whitespace character

Check if a character is a word character

Check if a string is SVG

DOMParser.parseFromString for XML with IE8 fallback

Beautiful color gradients in terminal output

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

Jest snapshot serializer that beautifies HTML.

Reduce function calls in a string, using a callback

Opinionated HTML formatter focused towards making HTML diffs readable.

Various helper utilities for working with buffers and binary data

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

Convert Unicode characters to Latin characters using transliteration

Slugify a string

Pure-JS printf

ES2017 spec-compliant String.prototype.padStart shim.

Remove any existing casing from a string.

sprintf parser and basic formatter

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

The color cyan, in ansi.

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

ES2019 spec-compliant String.prototype.trimLeft shim.

Extensible string utility for converting, identifying and flipping string case

remove diacritics from strings

ES2019 spec-compliant String.prototype.trimLeft shim.

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

Find lexicographical points between strings

String encoding utilitlies extracted from TweetNaCl.js

Math and string formula parser.

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

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

Run replace on a string and update it asynchronous

sprintf formatting targetted for CLI

Build and evaluate JavaScript strings safely via tagged template literals

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

Serialises error object to normal object

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

Write data to a random temporary file