Finds smallest and largest values.
Alternatives: compare, map.
This is part of package extra-array.
This is browserified, minified version of @extra-array/range-on.
It is exported as global variable array_rangeOn.
CDN: unpkg, jsDelivr.
array.rangeOn(x, [fn], [ths]);
// x: an array
// fn: map function (v, i, x)
// ths: this argument
// --> [min, max]
const array = require('extra-array');
var x = [1, 2, -3, -4];
array.rangeOn(x);
// [-4, 2]
array.rangeOn(x, v => Math.abs(v));
// [1, -4]