JSPM

Set a function's name property

Check if something is a generator function

Determine if a function is a native async function.

Create a promise that can be canceled

A function that returns the normally hidden `AsyncFunction` constructor

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

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

Make a function mimic another one

Run the supplied function exactly one time (once)

Visit a method over the items in an object, or map visit over the objects in an array.

Extract names from functions

Delay function calls until a set time elapses after the last invocation

Throttle a function to limit its execution rate

Call a specified method on each value in the given object.

Map `visit` over an array of objects.

Get the path of the caller function

Isomorphic, functional type-checking for Javascript

Get the callsite of the caller function

Automatically bind methods to their class instance

Module that helps you write generated functions in Node

Convert an argument into a valid iterator. Based on the `.makeIterator()` implementation in mout https://github.com/mout/mout.

Normalize a value or function, applying extra args to the function

JSS plugin for function value and rule syntax

Universal Children Definition for React Components

Set the length of a function.

No-dependencies, low-level, high-performance JIT code generation package for JavaScript

Capture and retrieve the last time a function was run

Run an array of functions in series

Make a synchronous function have a timeout

Reduce function calls in a string, using a callback

Use the gray() color function in CSS

Type checking for JavaScript functions

Validates if a value is a function.

Run promise-returning & async functions concurrently with optional limited concurrency

Debounce a function

Run an array of functions in parallel, but limit the number of tasks executing at the same time

Memoize promise-returning & async functions

Compose new functions f(g(x))

Wraps a function with a function of a sertain arity.

Sort the keys in an object.

Monkey-patch (hook) functions for debugging and stuff.

Memoize functions - An optimization used to speed up consecutive function calls by caching the result of calls with identical input

Mathematical expression evaluator

Get the name of a named function

Check whether a value is a generator or generator function

Node.js test runner that lets you develop with confidence.

chain a bunch of functions together into a single call

return a curried function

Return a function which tests if every element in an array passes a test condition.

Return a regular expression to capture a function name.

Return a double-precision floating-point number with the magnitude of x and the sign of y.

Test if a value is a function.

TypeScript implementation of debounce

check if an AST node is a function of some sort

Function which does nothing.

Fork a stream in multiple directions according to a function

Get the arguments of a function, arrow function, generator function, async function

Inspects a function and returns informations about it (e.g. name, parameters names, parameters and default values, signature)

Inspects function's parameters declaration and returns information about it (e.g. names, default values, if needs destructuring, destructured parameters names and default values)

Check if function is an ES6 class.

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

PostCSS plugin for exposing JavaScript functions

Wrap a function without changing its name and other properties

A string template tag to strip leading indents from your heredoc-style multi-line strings

A parser and converter for Tab Atkins's proposed color function in CSS.

Parse a function into an object using espree, acorn or babylon parsers. Extensible through Smart Plugins

PostCSS plugin to transform W3C CSS color function to more compatible CSS.

Specify properties for which a variable, function, keyword or value must be used

Allows you to bannish some methods or functions.

Provides a list of reserved identifiers for JavaScript

Fast kernel density estimation library

Converts function to its source code.

reverse the arguments passed to a function.

Create a lazy promise that defers execution until it's awaited or when `.then()`, `.catch()`, or `.finally()` is called

Function name shim (especially for supporting function names in Internet Explorer).

Markdown template helper. Uses remarkable to render markdown in templates. Should work with Handlebars, Lo-Dash or any template engine that supports helper functions.

Checks if the given value is a native function.

Check if a string is a valid JavaScript identifier

Make weak references to JavaScript Objects.

FNV-1a non-cryptographic hash function

DJB2a non-cryptographic hash function

ESLint rules for functional programming

Get a list of function's argument variable names

Markdown template helper. Uses remarkable to render markdown in templates. Should work with Handlebars, Lo-Dash or any template engine that supports helper functions.

Run an array of functions in series, each passing its results to the next function (waterfall)

Determine if a function is an ES6 arrow function or not.

Safely evaluate JavaScript (estree) expressions, sync and async.

Executes a callback for each property found on a object, with options regarding enumerability (enumerable or non-enumerable) and ownership (inherited or only own properties). It excludes built-in properties from Object and Function prototypes by default,

Check if a value is a function

It's noop function. It does nothing.

Stringifies function's parameters definition

Fast and simple C FFI (foreign function interface) for Node.js

Add context awareness to your apps and frameworks by safely evaluating user-defined conditional expressions. Useful for evaluating expressions in config files, prompts, key bindings, completions, templates, and many other user cases.

Executes a callback for each property found on a object, recursively on nested properties, with options regarding enumerability (enumerable or non-enumerable) and ownership (inherited or only own properties). It excludes built-in properties from Object an

Make an asynchronous function synchronous

the fastest version of Function#bind I could make

commitlint plugin to use functions as rule value

JavaScript function overloading framework.

Create a transform stream using await instead of callbacks

Mathematical expression evaluator fork with prototype pollution fix

return a debounced function

Fast and simple way to parse code context for use with documentation from code comments. Parses context from a single line of JavaScript, for functions, variable declarations, methods, prototype properties, prototype methods etc.

Simple javascript lib for converting a [comma || space] delimited string to an array

Lightweight logging library for any Node 10+ applications

Find how many values of a discrete periodic function are contained in an interval.

Gamma function.

return a throttled function

Exponential function.

Find the nearest value of a discrete periodic function, given a point.

Compose an array of middleware into a single function for use in Express, Connect, router, etc.

Given a point and a distance, determine how many periodic values were skipped.

function try-catch wrapper for promises

Limit the execution rate of a function using the token bucket algorithm

Replace text in files using strings, regexs or functions.

Convert classes into factory functions so they can be called with or without new.

A module for sending responses from lambda-funciton backed custom resources in AWS CloudFormation

Call a module's exported functions directly from the command line, with arguments.

AWS Lambda mock context object

Flex JWE Token Validator

Return a value or an evaluated function (with arguments).

Function parameter decorator transform plugin for babel v7, just like typescript.

Constant function.

Natural exponential function.

Function.prototype.bind replacement that provides an `unbounded` hidden property on the returned bounded function, that contains the original unbounded function

Load helpers with patterns, as an object, key-value pair, or module.

Fast, generic JavaScript/node.js utility functions.

Round a double-precision floating-point number toward zero.

The gaussian (radial basis function) kernel

Fork a stream into multiple streams

Check if function is an ES6 class.

Retrieves the value of a specified property from all elements in the collection.

A pipe function to perform function composition in LTR (Left To Right) direction.

Currying in javascript. Like .bind() without also setting `this`.

Clones a function (creates wrapper function), with the same signature as source function

Complementary error function.

grab bag of easing equations

converts callback-based functions to Promises and apply currying to arguments

Calculate a scaled Lanczos sum for the approximation of the gamma function.

Natural logarithm of the gamma function.

Flatten a function's argument. Like, really flatten

Evaluate bˣ - 1.

because i get tired of typing EE.prototype.emit.bind.bind(EE.prototype.emit)

Incomplete gamma function.

Compute gamma(x+1) - 1.

Evaluate a factorial.

Renames functions calls, but leaves function definitions unchanged.

Compute exp(x) - 1.

LaunchDarkly Server SDK for JavaScript - common Edge SDK code

An implementation of the memoize technique

Determine the best order for running async functions, and run them

A safe callback to string serializer

Function that returns an arbitrary `async function`, or undefined if `async function` syntax is unsupported.

Turn a callback-style function into a function that returns a promise

Make configurable canvas easily with Canvafy

Functional composition library

Coerce props to custom values

Inverse complementary error function.

🦅 cli syntax highlighting: any function - any object - 176 languages

create a function that can only be invoked once

Validate and format function arguments ( handles types and optionals)

Functional multimethod library

Error helpers library

Functional dispatch library

Function that returns an arbitrary async generator function, or undefined if async generator syntax is unsupported.

Create javascript functions with optional, default and named paramaters.

Compute the binomial coefficient.

Compute the ratio of two gamma functions.

Select an attribute of an object based on semver versioning

Beta function.

When a function is not enough

Inverse incomplete gamma function.

Incomplete beta function.

Extract function definitions from an array of GLSL tokens.

Evaluate the signum function for a double-precision floating-point number.

Incomplete beta function and its first derivative.

Calculate the Lanczos sum for the approximation of the gamma function.

Evaluate ln(1+x) - x.

Function constructor.

Get arguments of a function, useful for and used in dependency injectors. Works for regular functions, generator functions and arrow functions.

determine if a function is a generator function

Get the argument names of a JavaScript function

Ensure a function is only called once. This is a fork of sindresorhus/onetime, but with CommonJS support.

Easily draw function graphs in text mode.

Determine a function's name.

use function as webpack loader option

Make a function mimic another one. This is a fork of sindresorhus/mimic-fn, but with CommonJS support.

Rename a function

Stand-in for a function

return a function composed of 2 or more functions

Utility library of AST helper functions

A toolkit for deep structure manipulations, provides deep merge/clone functionality out of the box, and exposes hooks and custom adapters for more control and greater flexibility.

Inverse incomplete beta function.

Frequent default values

Chained function calls

Detect native function name support.

Strips javascript code blocks out of README (or any other markdown) files and converts them into function objects.

Get the hash of a string

Validate the type of arguments passed through the function.

A foreign function interface (FFI) for Node.js, N-API style

Tap into a promise chain without affecting its value or state

Return a function which tests if every element in an array-like object passes a test condition.

Parse function arguments. Useful to implement variadic functions.

Make weak references to JavaScript Objects.

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ESLint rules for controlling where and how mutation is used.

Modulus function.

Wraps synchronous functions with a callback-style API

Creates a queue of sync or async functions with resolve and reject callback.

Convert ES6 class constructor to normal function.

Instances of classes which are directly callable as functions.

get a function's source

Sorting and matching utility using configurable string, glob, regular expression, and/or function matchers

Create a lazily evaluated value

Overloads a function. Makes parameters optional.

Wraps a function so that it's only ever executed once.

Pass a value through a pipeline of functions

This is a tiny library for customizing components appearance

Qualified Function. Wraps a function so it only gets executed if a condition is true.

This is a tiny library for customizing components appearance

Build and evaluate JavaScript strings safely via tagged template literals

Utility functions for Node.js and JavaScript

Turns arrays and values into Filtering Functions.

Gives a wrapper function the properties and string value of its underlying function.

An async/await module for sending responses from lambda-funciton backed custom resources in AWS CloudFormation

Support the Bind Operator

A utility function to detect if a string should be wrapped in quotes to work as an object key

Inverse error function.

Possible Function. Wraps what might be a function, with fallback behavior in case it’s not. Perfect for use in functions that accept optional callback arguments.

Returns an object’s class and its ancestors.

Utility functions for Web Extensions, manifest v2 and v3

Drops undefined arguments from the end of a function call.

Execute functions in a configurable order, modifying a shared data structure.

Defines fallback behavior in case a variable is not a function. Perfect for optional callback parameters.

Lodash's memoize function, but in a much smaller package than lodash.memoize's.

Creates a variadic function, with a “rest parameter” that’s NOT at the end.

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Natural logarithm of the beta function.

Memoized function binding

Batch multiple function calls into a single one

Evaluate the natural logarithm of the factorial function.

Inverse incomplete beta function.

Retrieves parameter names from a function

SDBM non-cryptographic hash function

A small utility module that converts function arguments to an object for use within the function based on a supplied metadata object. This allows parameters to be passed in any order, making the resultant function very flexible.

💠 Recursive assign for objects, arrays and more

An eslint plugin to enforce method or function name stick to the conventions.

Function.

Function sequencing reloaded

An ESLint plugin to prevent function declaration after return statement

Compute the natural logarithm of the binomial coefficient.