My try. I used padStart and padEnd, and abused default parameters a bit, just for fun.
padStart
padEnd
const PYRAMID = "*"; const AIR = "·"; const pyramid = (n, {maxWidth = (n * 2) - 1, leftPadding = maxWidth / 2} = {}) => Array.from({length: n}, (_, idx, __, {width = (( idx + 1 ) * 2) - 1} = {}) => PYRAMID.repeat(width) .padStart(idx + leftPadding + 1, AIR) .padEnd(maxWidth, AIR) ).join("\n");
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My try. I used
padStart
andpadEnd
, and abused default parameters a bit, just for fun.