1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
export default function largestLocal(grid: number[][]): number[][] {    const dirs = [        [-1, -1],
        [-1, 0],
        [-1, 1],
        [0, -1],
        [0, 1],
        [1, -1],
        [1, 0],
        [1, 1],    ];
    return new Array(grid.length - 2).fill(0).map((_, i) =>        Array(grid.length - 2).fill(0).map((_, j) => {            return Math.max(                grid[i + 1][j + 1],                ...dirs                    .map(([r, c]) => grid[i + 1 + r]?.[j + 1 + c]),            );        })    );}