JSPM

A collection of essential TypeScript types

User-friendly glob matching

Higher-order functions and common patterns for asynchronous code

Utility to parse a string bytes to bytes and vice-versa

Extend an object with the properties of additional objects. node.js/javascript util.

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.

HTTP and HTTPS modules that follow redirects.

Escape string for use in HTML

ES2019 spec-compliant String.prototype.trimEnd shim.

ES2019 spec-compliant String.prototype.trimStart shim.

Bindings for the Watchman file watching service

CLI app helper

Utility for normalizing a numeric range, with a wrapping function useful for polar coordinates

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

Type check values

Lazy-evaluating list of files, based on globs or regex patterns

unist utility to recursively walk over nodes, with ancestral information

unist utility to visit nodes

vfile utility to create a virtual message

mdast utility to get the plain text content of a node

unist utility to check if a node passes a test

unist utility to serialize a node, position, or point as a human readable location

A simple utility for conditionally joining classNames together

A small utility for creating warnings and emitting them.

Combines a list of arrays, returning a single array with unique values, using strict equality for comparisons.

micromark utility with symbols

micromark utility to handle character codes

micromark utility with a couple of typescript types

mdast utility to parse markdown

micromark utility to decode numeric character references

micromark utility to tokenize subtokens

micromark utility with list of html tag names

micromark utility to sanitize urls

micromark utility to classify whether a character is whitespace or punctuation

micromark utility to encode dangerous html characters

micromark utility to resolve subtokens

mdast utility to transform to hast

mdast utility to serialize markdown

micromark utility normalize identifiers (as found in references, definitions)

micromark utility to combine syntax or html extensions

micromark utility to splice and push with giant arrays

micromark utility to decode markdown strings

mdast utility to check if a node is phrasing content

unist utility to get the position of a node

hast utility to check if a node is inter-element whitespace

hast utility to create an element from a simple CSS selector

hast utility to create trees

mdast utility to find and replace text in a tree

mdast extension to parse and serialize GFM autolink literals

mdast extension to parse and serialize GFM strikethrough

Escape a string for use in HTML or the inverse

mdast extension to parse and serialize GFM tables

mdast extension to parse and serialize MDX or MDX.js JSX

mdast extension to parse and serialize GFM (GitHub Flavored Markdown)

Cypress's fork of a simplified HTTP request client.

mdast extension to parse and serialize GFM footnotes

mdast extension to parse and serialize GFM task list items

vfile utility to convert between positional (line and column-based) and offset (range-based) locations

mdast extension to parse and serialize MDX (or MDX.js) expressions

unist utility to remove positions from a tree

mdast utility to find definition nodes in a tree

mdast extension to parse and serialize MDX.js ESM (import/exports)

Correctly declare progressive enhancements for CSS Custom Properties.

hast utility to transform from a `parse5` AST

Utilities for watching file trees.

A fast 642B utility that makes reading multipart responses simple

hast utility to transform to preact, react, solid, svelte, vue, etc

easy to use progress-bar for command-line/terminal applications

hast utility to reparse a tree

hast utility to transform to a `parse5` AST

hast utility to check if a node is a (certain) element

Determine an app's root path from anywhere inside the app

unist utility to check if a node is generated

hast utility to serialize to HTML

Utility Types Collection for TypeScript

Coalesce for JavaScript. Returns the first value that is not undefined or null.

A small utility, used by Fastify itself, for generating consistent error objects across your codebase and plugins.

return whitelisted properties of an object

esast (and estree) utility to visit nodes

unist utility to create a new trees with a nice syntax

Lightweight and faster alternative to Ramda with included TS definitions

unist utility to get a position from an estree node

mdast extension to parse and serialize MDX (or MDX.js)

hast utility to transform to estree (JavaScript AST) JSX

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

Common utility functions for oas-kit

unist utility to find a node after another node

mdast extension to parse and serialize frontmatter (YAML, TOML, etc)

estree (and esast) utility to serialize to JavaScript

hast utility to parse from HTML

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

Type assertions aka less-broken `typeof`

unist utility to remove nodes from a tree

A cross platform Promise.allSettled polyfill

function binding utility

Prototype inheritance utility

hast utility to get the rank (or depth, level) of headings

Starts server, waits for URL, then runs test command; when the tests end, shuts down server

hast utility to check if a node has a property

Get the last or last n elements in an array.

Simplified HTTP request client.

Simple help and sanity checks for Node CLI bin scripts

Function argument validation for humans

unist utility to find nodes after another node

estree (and esast) utility to parse from JavaScript

Get all but the last element or last n elements of an array.

unist utility to modify direct children of a parent

mdast utility to remove empty paragraphs from a tree

esast utility to transform from estree

hast utility to sanitize nodes

nlcst utility to transform a tree to a string

mdast extension to parse and serialize math

Utilities for watching file trees.

Takes a string, such as "1,2,3-10,5-8" and turns it into an array of numbers

React utility to merge refs.

mdast extension to parse and serialize generic directives (`:cite[smith04]`)

unist utility to visit direct children of a parent

hast utility to create a tree from the DOM

Small, performant & immutable iteration utilities for Arrays and Objects

hast utility that turns HTML into a syntax tree (while being small in browsers)

Utility data structure used in discord.js

Similar to String#trim() but removes only newlines

mdast utility to make a tree compact

unist utility to create a new tree with nodes that pass a filter

vfile utility to create a report for a file

vfile utility to count messages per category: failures, warnings, etc

hast utility for `querySelector`, `querySelectorAll`, and `matches`

vfile utility to sort messages by line/column

hast utility to check if a node is an embedded element

A utility library for JavaScript and Typescript.

A JavaScript library for internationalization and localization that leverages the official Unicode CLDR JSON data.

Require Node module and immediately remove it from module cache to force loading again next time

hast utility to check if a link element is “Body OK”

unist utility to inspect nodes

hast utility to check if a node is phrasing content

vfile utility to read and write to the file system

Return a normal number `y` and exponent `exp` satisfying `x = y * 2^exp`.

Ethereum RPC and Provider errors.

Detect native Symbol.toStringTag support.

Test if an object has a specified property.

Define (or modify) an object property.

Detect native Symbol support.

Test if a value is a string.

Insert supplied variable values into a format string.

Escape a regular expression string or pattern.

Test if a value is a boolean.

Test if a value is a function.

Replace search occurrences with a replacement string.

Return the current working directory.

Test if a value is a Float64Array.

Detect native Float32Array support.

Ethereum RPC and Provider errors

Detect native Uint32Array support.

Test if a value is a Uint32Array.

Determine the specification defined classification of an object.

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

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

Determine a value's type.

Detect native Buffer support.

Generate string from a token array by interpolating values.

Detect native Float64Array support.

Test if a value is an array.

Test if a value is object-like.

Determine the name of a value's constructor.

Convert between POSIX and Windows paths.

Test if a value is a Uint8Array.

Test if a value is a Buffer object.

Detect native Uint16Array support.

Test if a value is a Uint16Array.

Define a non-enumerable read-only property.

Add a callback to the next tick queue.

Return the global object.

Test if a value is a regular expression.

Read data from stdin.

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

Function which does nothing.

Split a double-precision floating-point number into a higher order word and a lower order word.

Convert a double-precision floating-point number to the nearest single-precision floating-point number.

Return an integer corresponding to the unbiased exponent of a double-precision floating-point number.

Check if an environment is big endian.

Test if a double-precision floating-point numeric value is infinite.

Test if a double-precision floating-point numeric value is NaN.

Platform float word order.

Check if an environment is little endian.

Return the prototype of a provided object.

Test if a value is an object.

Test if a value is a plain object.

Detect native Uint8Array support.

Test if a value is a Float32Array.

Test if a value is a number.

Platform byte order.

Create a regular expression from a regular expression string.

Test if a value is a regular expression string.

Return an unsigned 32-bit integer corresponding to the more significant 32 bits of a double-precision floating-point number.

Command-line interface.

Convenience wrapper for Got to interact with the GitHub API

Convert a string to lowercase.

Create a double-precision floating-point number from a higher order word and a lower order word.

mdast utility to generate a table of contents from a tree

(IEC) Utility to parse a string bytes to bytes and vice-versa

UI utilities

Tiny wrapper around ansi-colors to add colored symbols and a timestamp.

vfile utility to parse the YAML front matter in a file

A collection of useful utilities.

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.

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Simple CLDR traverser

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Escape regular expression special characters

mdast utility to parse a comment marker

Merge two lists, trying to preserve the order of both

Flattens React children and fragments to an array with predictable and stable keys

A crawling file watcher.

Return a copy of the object only containing the whitelisted properties.

unist utility to select nodes with CSS-like selectors

Minimum utility toolbelt

Utility to make vitest tests fail when console.error() or console.warn() are used

Flatten a nested array.

Get unique values of an array. Really, like deeply unique.

Ultra tiny, opinionated, positioning engine.

A minimal dom utility toolbelt

Transform deprecated styling attributes on HAST table cells to inline styles

unist utility to create a new tree by mapping all nodes

mdast utility to transform to nlcst

mdast utility to get the style of a heading

hast utility to find and replace text in a tree

🔧 Fast, modern, and practical utility library for FP in TypeScript.

Various utility functions

Cross-browser type assertions (less broken typeof)

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.

Escape regular expression special characters

Recursively omit empty properties from an object. Omits empty objects, arrays, strings or zero.

Simple function that return the first non null or undefined argument

hast utility to merge class names together

Convert Errors & Objects into an easily-serialized vanilla Object.

Get the prototype chain of any value as an Array

Gets you the Cypress test command log as JSON on failure

Returns a shallow copy of an object without blacklisted properties

Convert react components to plain text without any HTML markup

less broken typeof

Simplified, lightweight HTTP client library

Easy way to mock process.env during BDD testing

here-document on node.js

unist utility to find a node

A library of Javascript utility functions with an emphasis on Functional Programming.

Format an error message for production.

A collection of decorators using lodash at it's core.

es-escape-html rewrite for ESM

Reduces an object to a value that is the accumulated result of running each property in the object through a callback. Executes the callback function once for each own enumerable property in the object, receiving four arguments: the initial value (or valu

Blazing fast, tree-shakeable, type-safe, modern utility library to sort any type of array in less than 1 KB!