Dev.to Challenge # 52

challenge52.js

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");