sdcooke

const BASE83_ALPHABET = `0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz#$%*+,-.:;=?@[]^_{|}~`;
const BASE64_ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const BMP_HEADER = `data:image/bmp;base64,Qk3mAQAAAAAAADYAAAAoAAAADAAAAPT///8BABgAAAAAALABAAAAAAAAAAAAAAAAAAAAAAAA`;

const sRGBToLinear = (value: number) => {
    const v = value / 255;
    if (v <= 0.04045) {
        return v / 12.92;
    } else {
        return Math.pow((v + 0.055) / 1.055, 2.4);