Simple array to matrix algorithm with Typescript

list-to-matrix.ts

/**
 * Convert simple array into two-dimensional array (matrix)
 *
 * @param list The array
 * @param width The num of elements per sub-array
 * @return the new matrix
 */
export const listToMatrix = <T>(list: T[], width: number): T[][] => {
    const matrix = [];

    for (let i = 0, k = -1; i < list.length; i++) {
        if (i % width === 0) {
            k++;
            matrix[k] = [];
        }
        matrix[k].push(list[i]);
    }

    return matrix;
};