250 Most Popular npm Packages

Write files in an atomic fashion w/configurable ownership

Types for the AWS SDK

An Esprima-compatible JavaScript parser built on Acorn

Resolve a URI relative to an optional base URI

A simple cache for a few of the JS Error constructors.

Get callsites from the V8 stack trace API

ES Object-related atoms: Object, ToObject, RequireObjectCoercible

Loads environment variables from .env file

Slice a string with ANSI escape codes

[](https://www.npmjs.com/package/@smithy/util-buffer-from) [](https://www.npmjs.com/package/@smithy

Node.js releases data

Reuse objects and functions with style

General utilities for plugins to use

A very strict and proper argument parser.

CLI tool to update caniuse-lite to refresh target browsers from Browserslist config

An AST-based pattern checker for JavaScript.

Reactive Extensions for modern JavaScript

The Node.js `util.deprecate()` function with browser support

Strip the final newline character from a string or Uint8Array

Core istanbul API for JS code coverage

Babel helper functions for inserting module loads

option parsing and help generation

Modern Buffer API polyfill without footguns

[](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.a

JSON.parse with context information on error

Babel helper functions for implementing ES6 module transformations

Provides metadata and conversions from repository urls for GitHub, Bitbucket and GitLab

Node.js path.parse() ponyfill

A small polyfill for Object.setprototypeof

ECMAScript parsing infrastructure for multipurpose analysis

Collection of helper functions used by Babel transforms.

walk paths fast and efficiently

Run a child as if it's the foreground process. Give it stdio. Exit when it exits.

ES2015 `Object.assign()` ponyfill

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.

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

The compat-data to determine required Babel plugins

deterministic `JSON.stringify()` - a faster version of substack's json-stable-strigify without jsonify

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible

A JavaScript text diff implementation.

Buffers events from a stream until you are ready to handle them.

A stream that emits multiple other streams one after another.

A super light and fast circular JSON parser.

Modify strings, generate sourcemaps

Provides a function for detecting if an argument is an ArrayBuffer

Robustly `.call.bind()` a function

Get the status of a file with some features

A helper to optimistically set Symbol.toStringTag, when possible.

Helper functions around Function call/apply/bind, for use in `call-bind`