map-fns/addListToMap/index.js

<h1 align="center"> <code>map-fns</code> </h1>

'use strict';

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var __assign = function() {
    __assign = Object.assign || function __assign(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};

/**
 * Creates a new `map` populated with every item in the original `map` with every item in
 * `items` added to the map. The key that items behind are determined by the `keyProperty`.
 *
 * ```tsx
 * const map: Record<string, { id: string, value: number } }> = {
 * 	a: { id: "a", value: 1 },
 * };
 *
 * const result = addListToMap(map, [{ id: "b", value: 2 }], "id");
 *
 * console.log(result); // { a: { id: "a", value: 1 }, b: { id: "b", value: 2 } };
 * ```
 *
 * The original `map` is not modified.
 *
 * @param map - The map to copy and modify.
 * @param items - The items to add to the map
 * @param keyProperty - The property of the items that contains the map key to use (e.g. `id`).
 * @returns A new map with the items added to it.
 */
function addListToMap(map, items, keyProperty) {
    var obj = __assign({}, map);
    for (var _i = 0, items_1 = items; _i < items_1.length; _i++) {
        var item = items_1[_i];
        obj[item[keyProperty]] = item;
    }
    return obj;
}

module.exports = addListToMap;