return the first argument that is `!== undefined`
npm install defined[![github actions][actions-image]][actions-url]
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return the first argument that is !== undefined
Most of the time when I chain together ||s, I actually just want the first
item that is not undefined, not the first non-falsy item.
This module is like the defined-or (//) operator in perl 5.10+.
`` js`
var defined = require('defined');
var opts = { y : false, w : 4 };
var x = defined(opts.x, opts.y, opts.w, 100);
console.log(x);
`
$ node example/defined.js
false
The return value is false because false is the first item that is!== undefined.
` js`
var defined = require('defined')
Return the first item in the argument list a, b, c... that is !== undefined.
If all the items are === undefined, return undefined.
With npm do:
`
npm install defined
MIT
[package-url]: https://npmjs.org/package/defined
[npm-version-svg]: https://versionbadg.es/inspect-js/defined.svg
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[dev-deps-url]: https://david-dm.org/inspect-js/defined#info=devDependencies
[npm-badge-png]: https://nodei.co/npm/defined.png?downloads=true&stars=true
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[license-url]: LICENSE
[downloads-image]: https://img.shields.io/npm/dm/defined.svg
[downloads-url]: https://npm-stat.com/charts.html?package=defined
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[codecov-url]: https://app.codecov.io/gh/inspect-js/defined/
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