@extra-array/sort/index.js

Arranges values in an order.

'use strict';
function cmp(a, b) {
    return a < b ? -1 : (a > b ? 1 : 0);
}
function id(v) {
    return v;
}
function sortDual$(x, fc = null, fm = null) {
    var fc = fc || cmp, fm = fm || id;
    var m = new Map(), i = -1;
    for (var v of x)
        m.set(v, fm(v, ++i, x));
    return x.sort((a, b) => cmp(m.get(a), m.get(b)));
}
function sort$(x, fc = null, fm = null) {
    var fc = fc || cmp;
    if (fm)
        return sortDual$(x, fc, fm);
    else
        return x.sort(fc);
}
function sort(x, fc = null, fm = null) {
    return sort$(x.slice(), fc, fm);
}
module.exports = sort;