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Michael Winter 555e2c196e initial commit 5 years ago
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index.js initial commit 5 years ago
license initial commit 5 years ago
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readme.md

onetime Build Status

Only call a function once

When called multiple times it will return the return value from the first call.

Unlike the module once, this one isn't naughty extending Function.prototype.

Install

$ npm install --save onetime

Usage

let i = 0;

const foo = onetime(() => i++);

foo(); //=> 0
foo(); //=> 0
foo(); //=> 0

API

onetime(function, [shouldThrow])

function

Type: function

Function that should only be called once.

shouldThrow

Type: boolean
Default: false

Set to true if you want it to fail with a nice and descriptive error when called more than once.

License

MIT © Sindre Sorhus