JSPM

Simple String Variable Replacement Formatter

sprintf parser and basic formatter

Opinionated HTML formatter focused towards making HTML diffs readable.

Customizable String Formatter

A string formatter and validator based on masks

Custom formatter that converts any string into Title Case

Angular Number Formatter - formats the number into human readable format when in Thousands, Millions and Billions.

A string manipulation toolbox, featuring a string formatter (inspired by sprintf), a variable inspector (output featuring ANSI colors and HTML) and various escape functions (shell argument, regexp, html, etc).

awesome string formatter

Custom string formatter that converts any string into [Title Case](http://www.grammar-monster.com/lessons/capital_letters_title_case.htm)

Number formatter for imperial measurements with support for vulgar fractions

Snake and camel case formatter

A barebones yet feature-rich string formatter.

Universal string formatter with pattern support (like 'XX XX XX')

A string formatter and validator based on masks

sprintf formatting targetted for CLI

fast formatter for dates

Tiny template string formatter with defaults and pipes.

format an error into string / json for log

Turkey Tel Number Formatter

String formatter like python in Nodejs

Jest snapshot serializer that beautifies HTML.

ANSI escape codes for styling strings in the terminal

Strip ANSI escape codes from a string

Regular expression for matching ANSI escape codes

Terminal string styling done right

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

A string manipulation toolbox, featuring a string formatter (inspired by sprintf), a variable inspector (output featuring ANSI colors and HTML) and various escape functions (shell argument, regexp, html, etc).

Escape RegExp special characters

Wordwrap a string with ANSI escape codes

Get the native type of a value.

The string_decoder module from Node core

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

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

Parse JSON with more helpful errors

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

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

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

Common formatter utilities to handle numbers, dates, times, etc.

A string formatter and validator based on masks

Modify strings, generate sourcemaps

ANSI escape codes for manipulating the terminal

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

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

Returns true if a string has an extglob.

Strip the final newline character from a string or Uint8Array

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

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

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.

Indent each line in a string

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

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

Measure the difference between two strings using the Levenshtein distance algorithm

ES5 spec-compliant shim for String.prototype.trim

Parse String to Number based on configuration

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

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 robust HTML entities encoder/decoder with full Unicode support.

Querystringify - Small, simple but powerful query string parser.

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.

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

Normalize a URL

A javascript module that scans through string to remove non-numerals and formats out any found numbers based on configuration passed to it.

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 unique random string

Generate a cryptographically strong 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.

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

Detect the indentation of code

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

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

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

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

Fastest Levenshtein distance implementation in JS.

Determine the East Asian Width of a Unicode character

mdast utility to get the plain text content of a node

Check if a string has ANSI escape codes

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

Parse regular expressions' unicodeSets (v) flag.

a few common utility template tags for ES2015

Check if a character is decimal

Functions for dealing with a PostgresSQL connection string

LZ-based compression algorithm

Wildcard matching tools

Insert supplied variable values into a format string.

Parse and stringify URL query strings

Compute ripemd160 of bytes or strings.

Convert object keys to camel case

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

Math and string formula parser.

Check if a character is hexadecimal

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`

Get the gzipped size of a string or buffer

Check if a character is alphabetical

Check if a character is alphanumerical

micromark utility to decode markdown strings

Convert a string to pascal case (upper camelcase).

Convert object keys from camel case

Create an array by repeating the given value n times.

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

Split a string on the first occurance of a given separator

Formatting Date objects as strings since 2013

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

Get the system locale

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

A collection of useful string formatting utilities

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

Convert a string index to its line and column position

Simple micro templating

Convert a string to a valid safe filename

Remove wrapping quotes from a string.

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

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

Useful utilities for working with Uint8Array (and Buffer)

Functional errors with formatted output

Various helper utilities

Convert a value to a ReadableStream

ES2017 spec-compliant String.prototype.padEnd shim.

Repeat a string - fast

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

Returns `true` if the value is a primitive.

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

Terminal string styling with tagged template literals

Remove the trailing spaces from a string.

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

Strip a substring from the start/end of a string

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

Simple wildcard matching

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

Stringify Object as tree structure

Check if a string is a URL

Escape strings for use as JavaScript string literals

Remove leading indentation from ES6 template literals.

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.

The color gray, in ansi.

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

Pluralize a word

Returns true if a windows file path has invalid characters.

Serializes any DOM node into a String

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

fast string hashing function

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

Newline character converter

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

A simple string template function based on named or indexed arguments

String manipulation extensions for Underscore.js javascript library.

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 whitespace character

Elegant spinner for interactive CLI apps

Native JS murmur hash implementation

Check if a string is SVG

Regular expression for matching HTML comments

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

Check if a character is a word character

Reduce function calls in a string, using a callback

Find multiple RegExp matches in a string

DOMParser.parseFromString for XML with IE8 fallback

Beautiful color gradients in terminal output

Pure-JS printf

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

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

Convert Unicode characters to Latin characters using transliteration

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

Remove any existing casing from a string.

ES2019 spec-compliant String.prototype.trimLeft shim.

Slugify a string

remove diacritics from strings

The color cyan, in ansi.

ES2017 spec-compliant String.prototype.padStart shim.

Check if a string is an IP address

The color red, in ansi.

Extensible string utility for converting, identifying and flipping string case

Convert a string to space case.

ES2019 spec-compliant String.prototype.trimLeft shim.

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

nlcst utility to transform a tree to a string

Various helper utilities for working with buffers and binary data

Returns true if the value passed is all whitespace.

String encoding utilitlies extracted from TweetNaCl.js

Math and string formula parser.

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

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

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

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

Serialises error object to normal object

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

Similar to String#trim() but removes only newlines

Write data to a random temporary file

Convert a string to camel case.

Zero-dependency unicode-aware string tools

strings comparison matchers for chai

Check if a string is HTML

Replace search occurrences with a replacement string.

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

Convert between POSIX and Windows paths.

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

Test if a value is a string.

Test if a value is a regular expression string.

Escape a regular expression string or pattern.

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

Create a regular expression from a regular expression string.

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

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

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

Regular expression for matching URLs

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

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

Escape a string for use in AppleScript

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

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

Iterator over lines in a string

Get the length of unicode strings

Tagged template literal for Sanity.io GROQ-queries

slugifies even utf-8 chars!

Parse parentheses from a string

Object & string diff rendering for all displays

The fast way to check if a string is blank

Generate string from a token array by interpolating values.

Pad strings to a given length

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

Allocate a buffer containing a provided string.

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

Strip ANSI color codes from a string. No dependencies.

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

Return a regular expression to parse a regular expression string.

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

Ethiopian Telephone Number Formatter

Convert a string into a stream (streams2)

Convert a string to lowercase.

Detect the indentation of code (commonjs fork)

Converts a Buffer/String into a readable stream

A fully Unicode-aware string reverser written in JavaScript.

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

parse a css color string

Left and right string padding

More than 130 Handlebars helpers in ~20 categories. Helpers can be used with Assemble, Generate, Verb, Ghost, gulp-handlebars, grunt-handlebars, consolidate, or any node.js/Handlebars project.

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