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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]),            );        })    );}