JSPM

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

Mathematical expression evaluator

JSON parser/stringifier that supports functions and regexp

Mathematical expression evaluator fork with prototype pollution fix

Simple command line parser for node

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

Get the native type of a value.

Get callsites from the V8 stack trace API

Ensure a function is only called once

Implementation of Function.prototype.bind

Reuse objects and functions with style

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

Robustly `.call.bind()` a function

Run a function exactly one time

`Start a promise chain

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

Run an array of functions in parallel

Get the path of the parent module

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Determine if a function is a native generator function.

Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

Define a lazily evaluated property on an object

Set a function's length property

Returns true if a value is a plain object, array or function.

A template file parser which supports variables and functions as callbacks.

An ES2015 spec-compliant `Function.prototype.name` shim

Does this JS environment support the `name` property on functions?

two functions: One that returns true, one that returns false

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

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

A function that returns the normally hidden `AsyncFunction` constructor

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

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Make a function mimic another one

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

Run the supplied function exactly one time (once)

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

Mathematical expression evaluator

Automatically bind methods to their class instance

Module that helps you write generated functions in Node

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

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

Converts function to its source code.

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.

Capture and retrieve the last time a function was run

Run an array of functions in series

Reduce function calls in a string, using a callback

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.

Type checking for JavaScript functions

Use the gray() color function in CSS

Validates if a value is a function.

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

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

Make a synchronous function have a timeout

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.

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

Sort the keys in an object.

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

return a curried function

A tool for parsing formulas and create reusable functions

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.

check if an AST node is a function of some sort

TypeScript implementation of debounce

Function which does nothing.

Fork a stream in multiple directions according to a function

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

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

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

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

Check if function is an ES6 class.

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

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

reverse the arguments passed to a function.

Fast kernel density estimation library

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

FNV-1a non-cryptographic hash function

Provides a list of reserved identifiers for JavaScript

Allows you to bannish some methods or functions.

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).

Checks if the given value is a native function.

Check if a string is a valid JavaScript identifier

DJB2a non-cryptographic hash function

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

ESLint rules for functional programming

Make weak references to JavaScript Objects.

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

Utility library of AST helper functions

Get a list of function's argument variable names

Mathematical expression evaluator

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

Check if a value is a function

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,

Stringifies function's parameters definition

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

the fastest version of Function#bind I could make

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

JavaScript function overloading framework.

commitlint plugin to use functions as rule value

Make an asynchronous function synchronous

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.

Create a transform stream using await instead of callbacks

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

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

Exponential function.

Lightweight logging library for any Node 10+ applications

Gamma function.

return a throttled function

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

It's noop function. It does nothing.

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.

function try-catch wrapper for promises

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

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

Replace text in files using strings, regexs or functions.

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

AWS Lambda mock context object

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

Natural exponential function.

Constant function.

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

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

Flex JWE Token Validator

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.

The gaussian (radial basis function) kernel

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

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

Check if function is an ES6 class.

Fast, generic JavaScript/node.js utility functions.

Flatten a function's argument. Like, really flatten

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

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

Fork a stream into multiple streams

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

Complementary error function.

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

Evaluate bˣ - 1.

grab bag of easing equations

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

a parser for texts by a template

Natural logarithm of the gamma function.

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

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

Compute gamma(x+1) - 1.

Incomplete gamma function.

Evaluate a factorial.

Renames functions calls, but leaves function definitions unchanged.

LaunchDarkly Server SDK for JavaScript - common Edge SDK code

Make configurable canvas easily with Canvafy

Compute exp(x) - 1.

Functional composition library

An implementation of the memoize technique

Functional dispatch library

This repo contains implementations of OMG IDL specifications used by [Foxglove](https://www.foxglove.dev). The parsers expect schemas according to the MCAP specifications: [ros2idl](https://mcap.dev/spec/registry#ros2idl), [omgidl](https://mcap.dev/spec/r

Functional multimethod library

Error helpers library

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

A safe callback to string serializer

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

Coerce props to custom values

Inverse complementary error function.

Compute the binomial coefficient.

Compute the ratio of two gamma functions.

Validate and format function arguments ( handles types and optionals)

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

Beta function.

create a function that can only be invoked once

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Create javascript functions with optional, default and named paramaters.

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Select an attribute of an object based on semver versioning

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

Incomplete beta function.

Incomplete beta function and its first derivative.

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

When a function is not enough

Inverse incomplete gamma function.

Make weak references to JavaScript Objects.

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

Extract function definitions from an array of GLSL tokens.

Simple function call parser

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

Evaluate ln(1+x) - x.

determine if a function is a generator function

Easily draw function graphs in text mode.

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

Get the hash of a string

Function constructor.

Determine a function's name.

Get the argument names of a JavaScript function

Stand-in for a function

Inverse incomplete beta function.

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

use function as webpack loader option

Rename a function

Detect native function name support.

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

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return a function composed of 2 or more functions

Frequent default values

Chained function calls

Parse function arguments. Useful to implement variadic functions.

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

Validate the type of arguments passed through the function.

Tap into a promise chain without affecting its value or state

ESLint rules for controlling where and how mutation is used.

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.

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

Wraps synchronous functions with a callback-style API

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

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

Create a lazily evaluated value

Natural logarithm of the beta function.

Modulus function.

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

Convert ES6 class constructor to normal function.