Finds smallest and largest entries.
This is part of package extra-array.
This is browserified, minified version of @extra-array/range.
It is exported as global variable array_range.
CDN: unpkg, jsDelivr.
array.range(x, [fc], [fm]);
// x: an array
// fc: compare function (a, b)
// fm: map function (v, i, x)
// → [smallest, largest]
const array = require("extra-array");
var x = [1, 2, -3, -4];
array.range(x);
// [ [ 3, -4 ], [ 1, 2 ] ]
array.range(x, (a, b) => Math.abs(a) - Math.abs(b));
// [ [ 0, 1 ], [ 3, -4 ] ]
array.range(x, null, v => Math.abs(v));
// [ [ 0, 1 ], [ 3, -4 ] ]