JSPM

Terminal string styling done right

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

Looks up the first non-whitespace character to the left/right of a given index

Left and right string padding

Terminal string styling done right

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

Terminal string styling done right

Right pad a string.

Node.js module for reshaping Right-To-Left (Arabic/Persian) charators in string

This method removes whitespace from the left and right end of a string.

Compare primitives the right way (using `<`, `>` and `==`)

Right pad a string.

String right pad

Terminal and Console string styling done right.

This method removes whitespace from the end of a string.

Right pad a string.

Terminal string styling done right

add characters to the right of a string such that its total length is n

Strip ANSI escape codes from a string

Pads characters on right sides of a source string.

Left and right string padding with advanced features.

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Terminal string styling done right

Check if a string has ANSI escape codes

Slice a string with ANSI escape codes

Terminal string styling done right (+ CommonJS build)

Similar to String#trim() but removes only newlines

Detect the indentation of code

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

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

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ANSI escape codes for styling strings in the terminal

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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

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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

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Parse JSON with more helpful errors

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`

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

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

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.

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

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

Terminal string styling done right. This package is both cjs/esm compatible!

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

ES5 spec-compliant shim for String.prototype.trim

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.

Parse String to Number based on configuration

Measure the difference between two strings using the Levenshtein distance algorithm

Combine left, right and center pad modules in lack of a working alternative

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

Normalize a URL

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

Compile regular expressions' unicodeSets (v) flag.

Detect the indentation of code (commonjs fork)

Truncate a string to a specific width in the terminal

Strip redundant indentation and indent the string

Pad strings to a given length

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

Generate a unique random string

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.

Get the shortest leading whitespace from lines in a string

Generate a cryptographically strong random string

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

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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.

mdast utility to get the plain text content of a node

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

Parse regular expressions' unicodeSets (v) flag.

a few common utility template tags for ES2015

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

LZ-based compression algorithm

Functions for dealing with a PostgresSQL connection string

Wildcard matching tools

Parse and stringify URL query strings

Fastest Levenshtein distance implementation in JS.

Convert object keys to camel case

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

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

Check if a character is alphabetical

Math and string formula parser.

micromark utility to decode markdown strings

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

Convert object keys from camel case

Convert a string to pascal case (upper camelcase).

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

Create an array by repeating the given value n times.

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.

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

Split a string on the first occurance of a given separator

Isomorphic, functional type-checking for Javascript

Get the system locale

Lazy brush - smooth drawing using mouse or finger

Convert a string index to its line and column position

Convert a string to a valid safe filename

Pads a string on the left and right sides to center a source string.

Simple micro templating

Remove wrapping quotes from a string.

Left and right padder.

Format spaces from the left and right end of a string and between strings

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

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

Various helper utilities

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

Functional errors with formatted output

Useful utilities for working with Uint8Array (and Buffer)

Repeat a string - fast

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

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.

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

Simple wildcard matching

Strip a substring from the start/end of a string

Remove the trailing spaces from a string.

Extract the first JSON object or array from a string

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

Check if a string or buffer ends with a given string

wraps words based on arbitrary 2D glyphs

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

Stringify Object as tree structure

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

Check if a string is a URL

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

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`

Returns true if a windows file path has invalid characters.

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.

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

Check if a character is a whitespace character

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.

Terminal string styling done right

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

Terminal string styling done right

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

Opinionated HTML formatter focused towards making HTML diffs readable.

Regular expression for matching HTML comments

Pure-JS printf

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.

Jest snapshot serializer that beautifies HTML.

Convert Unicode characters to Latin characters using transliteration

Slugify a string

Remove any existing casing from a string.

sprintf parser and basic formatter

Fast and correct clip functions for HTML and plain text.

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.

The color red, in ansi.

Extensible string utility for converting, identifying and flipping string case

Convert a character or character code to string

ES2017 spec-compliant String.prototype.padStart shim.

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

sprintf formatting targetted for CLI

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

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

Math and string formula parser.

ES2019 spec-compliant String.prototype.trimLeft shim.

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.

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

Check if a string only contains alphanumeric characters

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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

Zero-dependency unicode-aware string tools

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

Terminal string styling done right

Check if a string is HTML

Replace search occurrences with a replacement string.

Test if a value is a string.

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

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

Insert supplied variable values into a format string.

Escape a regular expression string or pattern.

Test if a value is a regular expression string.

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

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

Iterator over lines in a string

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

Parse parentheses from a string

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.

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.

Generate string from a token array by interpolating values.

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