7a8dd69e1c
ESLint 2.9.0 fixes some minor bugs that we have been experiencing and introduces some new rules that we may wish to consider. PR-URL: https://github.com/nodejs/node/pull/6498 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Roman Reiss <me@silverwind.io>
892 B
892 B
onetime 
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