Dumping image data from Chrome

gistfile1.ts

// Typescript

export function dump_image(image: ImageData) {
    const canvas = document.createElement("canvas") as HTMLCanvasElement;
    canvas.width = image.width;
    canvas.height = image.height;
    canvas.getContext("2d")!.putImageData(image, 0, 0);
    return canvas.toDataURL();
}

/* Then a Bash script

#!/bin/bash
OUTPUT_FILE="$1"
if [ -z "${OUTPUT_FILE}" ]
then
        >&2 echo "Usage: $0 <output_file>"
        exit 1
fi

xclip -o | sed "s/data:image\/png;base64,//gi" | base64 -d > "${OUTPUT_FILE}"

*/