A library that provides a once-many iterator.

A feature-rich Node.js event emitter implementation with namespaces, wildcards, TTL, async listeners and browser/worker support.

Internationalized calendar, date, and time manipulation utilities

Launch latest Chrome with the Devtools Protocol port open

Excel Workbook Manager - Read and Write xlsx and csv Files.

Next.js Runtime Environment Configuration - Populates your environment at runtime rather than build time.

Launch latest Edge with the Devtools Protocol port open

Allows users to use generators in order to write common functions that can be both sync or async.

Open Node Streams on demand.

Run a function exactly one time

A professional solution for consolidating all your JavaScript projects in one Git repo

JSON for Humans

Creates a Promise that waits for a single event

Extended regular expressions

A framework for building native apps using React

A simple function that makes a counter-based promise, which can be incremented and decremented, and it resolves once its counter reaches zero.

The CLI tool to run `eslint --fix` for each rule

Ensure a function is only called once

Efficient path tracking and pattern matching for XML/JSON parsers

Show a warning once