ctx.canvas is null

[alexgleason]

Reproduction:

import { createCanvas } from 'https://deno.land/x/canvas@v1.4.1/mod.ts';

const canvas = createCanvas(300, 100);
const ctx = canvas.getContext('2d');

ctx.canvas; // null

It matters because I want to be able to pass the ctx into other functions and be able to get the canvas.

According to mdn it can be null if there's no associated canvas. But in TypeScript it's never null.