drawMaze.js

function draw(matrix) {
	const ctx = canvas.getContext('2d');
	ctx.clearRect(0, 0, CANVAS_HEIGHT, CANVAS_WIDTH);
	ctx.beginPath();
	matrix.forEach((pixelsRow, rowIndex) => {
		const y = rowIndex * PIXEL_RATIO;
		pixelsRow.forEach((pixel, pixelIndex) => {
			const x = pixelIndex * PIXEL_RATIO;
			ctx.fillStyle = COLORS[pixel];
			ctx.fillRect(x, y, PIXEL_RATIO, PIXEL_RATIO);
		});
	});
	ctx.closePath();
}