Adds values to the start.
Alternatives: unshift, unshift$.
Similar: push, pop, shift, unshift.
This is part of package extra-array.
This is browserified, minified version of @extra-array/unshift.
It is exported as global variable array_unshift.
CDN: unpkg, jsDelivr.
array.unshift(x, ...vs);
// x: an array
// vs: values to addconst array = require("extra-array");
var x = [3, 4];
array.unshift(x, 2);
// [ 2, 3, 4 ]
array.unshift(x, 1, 2);
// [ 1, 2, 3, 4 ]