@beenotung/tslib/iterative/map.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.map_any = exports.map_nodeList = exports.map_map = exports.map_set = exports.map_object = exports.map_array = exports.maps = void 0;
const type_1 = require("../type");
var maps;
(function (maps) {
    function array(xs, f) {
        return xs.map(f);
    }
    maps.array = array;
    function object(x, f) {
        const y = new x.constructor();
        // eslint-disable-next-line guard-for-in
        for (const k in x) {
            y[k] = f(x[k], k, x);
        }
        return y;
    }
    maps.object = object;
    function set(xs, f) {
        const ys = new Set();
        xs.forEach(x => ys.add(f(x, xs)));
        return ys;
    }
    maps.set = set;
    function map(xs, valueMapper, keyMapper) {
        const ys = new Map();
        xs.forEach((av, ak) => {
            const bv = valueMapper(av, ak, xs);
            const bk = keyMapper ? keyMapper(av, ak, xs) : ak;
            ys.set(bk, bv);
        });
        return ys;
    }
    maps.map = map;
    function nodeList(xs, f) {
        const ys = new Array(xs.length);
        for (let i = 0; i < xs.length; i++) {
            ys[i] = f(xs.item(i), i, xs);
        }
        return ys;
    }
    maps.nodeList = nodeList;
    function any(o, f) {
        if (Array.isArray(o)) {
            return array(o, f);
        }
        // skip this data type if in node.js
        if ((typeof NodeList !== 'undefined' && o instanceof NodeList) ||
            (typeof HTMLCollection !== 'undefined' && o instanceof HTMLCollection)) {
            return nodeList(o, f);
        }
        switch ((0, type_1.getObjectType)(o)) {
            case 'Array':
                return array(o, f);
            case 'Set':
                return set(o, f);
            case 'Map':
                return map(o, f);
            case 'Object':
                return object(o, f);
            default:
                return f(o);
        }
    }
    maps.any = any;
})(maps || (exports.maps = maps = {}));
exports.map_array = maps.array;
exports.map_object = maps.object;
exports.map_set = maps.set;
exports.map_map = maps.map;
exports.map_nodeList = maps.nodeList;
exports.map_any = maps.any;