https://github.com/revington/zd-once

Zero deps, Ensure a function is only called once
https://github.com/revington/zd-once

once

Last synced: 4 months ago
JSON representation

Zero deps, Ensure a function is only called once

• Host: GitHub
• URL: https://github.com/revington/zd-once
• Owner: revington
• License: mit
• Created: 2018-04-24T08:04:08.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2025-09-16T09:43:50.000Z (9 months ago)
• Last Synced: 2025-09-18T16:43:09.098Z (9 months ago)
• Topics: once
• Language: JavaScript
• Size: 8.79 KB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
[![Build Status](https://travis-ci.org/revington/zd-once.svg?branch=master)](https://travis-ci.org/revington/zd-once)

[![Known Vulnerabilities](https://snyk.io/test/github/revington/zd-once/badge.svg?targetFile=package.json)](https://snyk.io/test/github/revington/zd-once?targetFile=package.json)

[![Coverage Status](https://coveralls.io/repos/github/revington/zd-once/badge.svg?branch=master)](https://coveralls.io/github/revington/zd-once?branch=master)

# zd-once

Ensure a function is only called once. Zero deps and simple codebase.

## Install

```

$ npm install zd-once

```

## Usage 

```

const {

    once

} = require('zd-once');

function sum(a, b) {

    return a + b;

}

let sumOnce = once(sum);

console.log(sumOnce(1, 2)); // prints 3

console.log(sumOnce(1, 2)); // prints nothing

```

## API

* `once(fn)` ensures a function is called only once.

* `onceStrict(fn)` similar to `once(fn)`. It will throw an error if called more than once.