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)

Snake and camel case formatter

Number formatter for imperial measurements with support for vulgar fractions

A barebones yet feature-rich string formatter.

A string formatter and validator based on masks

fast formatter for dates

sprintf formatting targetted for CLI

Tiny TypeScript utilities: strings & date formatter

Tiny template string formatter with defaults and pipes.

format an error into string / json for log

Turkey Tel Number Formatter

Jest snapshot serializer that beautifies HTML.

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

ANSI escape codes for styling strings in the terminal

Strip ANSI escape codes from a string

Terminal string styling done right

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).

Regular expression for matching ANSI escape codes

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

String formatter like python in Nodejs

A dull string formatter

A string formatter and validator based on masks

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

Parse JSON with more helpful errors

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

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

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.

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

Returns true if a string has an extglob.

Strip the final newline character from a string or Uint8Array

Slice a string with ANSI escape codes

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

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

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

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

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

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

Measure the difference between two strings using the Levenshtein distance algorithm

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

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

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).

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.

Normalize a URL

Compile regular expressions' unicodeSets (v) flag.

Truncate a string to a specific width in the terminal

Strip redundant indentation and indent the string

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

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

Generate a unique random string

Generate a cryptographically strong random string

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

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

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

Detect the indentation of code

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

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

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

mdast utility to get the plain text content of a node

Parse regular expressions' unicodeSets (v) flag.

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

Wildcard matching tools

Check if a string has ANSI escape codes

Functions for dealing with a PostgresSQL connection string

a few common utility template tags for ES2015

LZ-based compression algorithm

Insert supplied variable values into a format string.

Fastest Levenshtein distance implementation in JS.

Convert object keys to camel case

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 hexadecimal

Check if a character is alphanumerical

Compute ripemd160 of bytes or strings.

Check if a character is alphabetical

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.

micromark utility to decode markdown strings

Convert object keys from camel case

Convert a string to pascal case (upper camelcase).

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

Formatting Date objects as strings since 2013

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

Create an array by repeating the given value n times.

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

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

Isomorphic, functional type-checking for Javascript

Split a string on the first occurance of a given separator

Get the system locale

Convert a string index to its line and column position

Convert a string to a valid safe filename

Simple micro templating

String formatter utility for Javascript

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.

Various helper utilities

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

Functional errors with formatted output

Useful utilities for working with Uint8Array (and Buffer)

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

Repeat a string - fast

Convert a value to a ReadableStream

ES2017 spec-compliant String.prototype.padEnd shim.

Terminal string styling with tagged template literals

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

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

Returns `true` if the value is a primitive.

Strip a substring from the start/end of a string

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

Simple wildcard matching

Remove the trailing spaces from a string.

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

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

Stringify Object as tree structure

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

Check if a string is a URL

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

Serializes any DOM node into a String

Escape strings for use as JavaScript string literals

The color gray, in ansi.

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

Remove leading indentation from ES6 template literals.

Returns true if a windows file path has invalid characters.

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

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

Pluralize a word

A simple string template function based on named or indexed arguments

fast string hashing function

Newline character converter

String manipulation extensions for Underscore.js javascript library.

Native JS murmur hash implementation

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

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

Check if a character is a word character

Elegant spinner for interactive CLI apps

Check if a string is SVG

Find multiple RegExp matches in a string

Reduce function calls in a string, using a callback

Beautiful color gradients in terminal output

Regular expression for matching HTML comments

Various helper utilities for working with buffers and binary data

DOMParser.parseFromString for XML with IE8 fallback

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

Pure-JS printf

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.

Ethiopian Telephone Number Formatter

Slugify a string

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

Check if a string is an IP address

The color cyan, in ansi.

ES2017 spec-compliant String.prototype.padStart shim.

Extensible string utility for converting, identifying and flipping string case

The color red, in ansi.

Returns true if the value passed is all whitespace.

ES2019 spec-compliant String.prototype.trimLeft shim.

remove diacritics from strings

nlcst utility to transform a tree to a string

Convert a string to space case.

String encoding utilitlies extracted from TweetNaCl.js

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

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

Math and string formula parser.

ES2019 spec-compliant String.prototype.trimLeft shim.

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

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

Simple converters from case to case for string and Record. It can canvert below cases each other.

Serialises error object to normal object

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

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

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

Check if a string only contains alphanumeric characters

Convert a string to camel case.

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

Write data to a random temporary file

strings comparison matchers for chai

Zero-dependency unicode-aware string tools

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)

Similar to String#trim() but removes only newlines

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

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

Test if a value is a regular expression string.

Test if a value is a string.

Escape a regular expression string or pattern.

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

Iterator over lines in a string

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

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

Parse parentheses from a string

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

Convert between POSIX and Windows paths.

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

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

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

Escape a string for use in AppleScript

Generate string from a token array by interpolating values.

Pad strings to a given length

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

slugifies even utf-8 chars!

Create a regular expression from a regular expression string.

Get the length of unicode strings

The fast way to check if a string is blank

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

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

Return a regular expression to parse a regular expression string.

Allocate a buffer containing a provided string.

Tagged template literal for Sanity.io GROQ-queries

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

Regular expression for matching URLs

Strip ANSI color codes from a string. No dependencies.

parse a css color string

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

Detect the indentation of code (commonjs fork)

small function to append a query string to a URL

Convert a string to lowercase.

A collection of personal utilities to live a happier life

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.