i1u5

function scaleImage(url, width = 1024, quality = 1.0) {
	let img = new Image();
	img.onload = function () {
		let canvas = document.createElement("canvas"),
			context = canvas.getContext("2d");
		canvas.width = width;
		canvas.height = width * (img.height / img.width);
		context.drawImage(img, 0, 0, canvas.width, canvas.height);
		return canvas.toDataURL('image/jpeg', quality);
	};

i1u5

Keybase proof

I hereby claim:

• I am doomlerd on github.
• I am doomlord (https://keybase.io/doomlord) on keybase.
• I have a public key ASBUvJgqwDRvq5C0a5GCFpZ7yFLC2gwE21kU0AmSB57JLQo

To claim this, I am signing this object:

i1u5

// Made by Oliver Lenehan, @sunsetkookaburra
// --allow-read --allow-write subsystem.ts [target]

if(!Deno.args[0]) Deno.exit(1);

async function readN(r: Deno.Reader, n: number): Promise<Uint8Array | null> {
    const buf = new Uint8Array(n);
    let nRead = 0;
    // a null value of r.read() will nullish coalesce into NaN and
    // polute nRead, causing (nRead < n) to be false and the loop to exit