diginext-utils/dist/array/max.js

README.md

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.max = max;
/**
 * Finds the maximum value in an array.
 * If a key is provided, finds the maximum value of that property from each object.
 *
 * @template T - The type of elements in the array
 * @param array - The array to search
 * @param key - Optional key to find maximum value from objects
 * @returns The maximum value, or 0 if array is empty
 *
 * @example
 * ```ts
 * max([3, 1, 4, 1, 5]); // 5
 * max([{ value: 5 }, { value: 2 }, { value: 8 }], 'value'); // 8
 * max([]); // 0
 * ```
 */
function max(array, key) {
    if (!Array.isArray(array) || array.length === 0) {
        return 0;
    }
    if (key !== undefined) {
        return array.reduce((maxVal, item) => {
            const value = item[key];
            const numValue = typeof value === "number" ? value : -Infinity;
            return numValue > maxVal ? numValue : maxVal;
        }, -Infinity);
    }
    return array.reduce((maxVal, value) => {
        const numValue = typeof value === "number" ? value : -Infinity;
        return numValue > maxVal ? numValue : maxVal;
    }, -Infinity);
}
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