Fallback when a value is not Array.
Via NPM:
npm install arrvl
Via Yarn:
yarn add arrvl
const arrvl = require('arrvl');
// When a value is not Array, it will return fallback value.
let a = arrvl(null, 0); // a = 0
let b = arrvl({}, 'x'); // b = 'x'
// When a value is Array, it will return that value.
let c = arrvl([], 1); // c = []
let d = arrvl([1, 2, 3], 'abc'); // d = [1, 2, 3]
A main value.
A fallback value.