/// <reference lib="dom" />

const canvas = document.createElement("canvas")
canvas.style.position = "absolute"
canvas.style.top = "0px"
canvas.style.left = "0px"
canvas.style.width = "100vw"
canvas.style.height = "100vh"
document.body.append(canvas)
const ctx = canvas.getContext("2d")!

function draw() {
    ctx.fillStyle = "black"
    ctx.fillRect(0, 0, canvas.width, canvas.height)
}

canvas.addEventListener("resize", () => draw())
draw()