diginext-utils/dist/array/sum.d.ts

README.md

/**
 * Calculates the sum of all elements in an array.
 * If a key is provided, sums the values of that property from each object.
 *
 * @template T - The type of elements in the array
 * @param array - The array to sum
 * @param key - Optional key to sum values from objects
 * @returns The sum of all values, or 0 if array is empty
 *
 * @example
 * ```ts
 * sum([1, 2, 3, 4]); // 10
 * sum([{ value: 5 }, { value: 10 }], 'value'); // 15
 * sum([]); // 0
 * ```
 */
export declare function sum<T = number>(array: T[], key?: keyof T): number;
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