pragmatic-fp-ts/lib/sortWith.js

Opinionated functional programming library with easy use in mind

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.sortWith = void 0;
const order = {
    reversed: 1,
    equal: 0,
    ordered: -1,
};
const compare = (a, b) => {
    switch (true) {
        case a > b:
            return order.reversed;
        case a < b:
            return order.ordered;
        default:
            return order.equal;
    }
};
const compareWith = (fns) => {
    const go = (a, b, idx) => {
        const f = fns[idx];
        const fA = f(a);
        const fB = f(b);
        const result = compare(fA, fB);
        const hasMoreComparisons = idx < fns.length - 1;
        return result === order.equal && hasMoreComparisons ? go(a, b, idx + 1) : result;
    };
    return (a, b) => go(a, b, 0);
};
function sortWith(fns, coll) {
    if (arguments.length === 1)
        return (theColl) => sortWith(fns, theColl);
    else {
        const sorted = [...(coll !== null && coll !== void 0 ? coll : [])].sort(compareWith(fns));
        return sorted;
    }
}
exports.sortWith = sortWith;