Spierpinski squares in node.js with canvas

index.js

// nodejs Spierpinski squares script
// hangs after 8 recursions on my machine for some reason

const prompt = require('prompt-sync')();
const { createCanvas, loadImage } = require('canvas');


const n = parseInt(prompt('Number (int) to generate: '));

// Creating tile
const canvas = createCanvas(800, 800);
const ctx = canvas.getContext('2d');

// Colors
const colors = ['#000000', '#FFFFFF'];

// Recursive func to draw fractal
function drawFractal(x, y, size, depth) {
  if (depth === 0) {
    ctx.fillStyle = colors[depth % 2];
    ctx.fillRect(x, y, size, size);
  } else {
    // Call recursive for the 4 inside squares
    const newSize = size / 3;
    drawFractal(x, y, newSize, depth - 1);
    drawFractal(x + newSize, y, newSize, depth - 1);
    drawFractal(x + 2 * newSize, y, newSize, depth - 1);
    drawFractal(x, y + newSize, newSize, depth - 1);
    drawFractal(x + 2 * newSize, y + newSize, newSize, depth - 1);
    drawFractal(x, y + 2 * newSize, newSize, depth - 1);
    drawFractal(x + newSize, y + 2 * newSize, newSize, depth - 1);
    drawFractal(x + 2 * newSize, y + 2 * newSize, newSize, depth - 1);
  }
}

drawFractal(0, 0, canvas.width, n);

// Save picture
const fs = require('fs');
const out = fs.createWriteStream(__dirname + '/fractal.png');
const stream = canvas.createPNGStream();
stream.pipe(out);
out.on('finish', () => console.log('Generated fractal successfully.'));