forked from sashin/sashinexists
27 lines
631 B
Markdown
27 lines
631 B
Markdown
# Function Once
|
|
|
|
Wraps a function so that it's only ever executed once.
|
|
|
|
Note: `this` is always set to `undefined` and only functions that don't accept any arguments are supported, as using those with a function that's only ever executed once is practically just a footgun. If you need different `this` or different arguments you should probably use memoization instead.
|
|
|
|
## Install
|
|
|
|
```sh
|
|
npm install --save function-once
|
|
```
|
|
|
|
## Usage
|
|
|
|
```ts
|
|
import once from 'function-once';
|
|
|
|
const rand = once (() => Math.random ());
|
|
|
|
rand (); // => 0.3344627371267874
|
|
rand (); // => 0.3344627371267874
|
|
```
|
|
|
|
## License
|
|
|
|
MIT © Fabio Spampinato
|