// Pixel GIF code adapted from https://stackoverflow.com/a/33919020/266535
const keyStr =
  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
const triplet = (e1: number, e2: number, e3: number) =>
  keyStr.charAt(e1 >> 2) +
  keyStr.charAt(((e1 & 3) << 4) | (e2 >> 4)) +
  keyStr.charAt(((e2 & 15) << 2) | (e3 >> 6)) +
  keyStr.charAt(e3 & 63)

export const rgbDataURL = (r: number, g: number, b: number) =>
  `data:image/gif;base64,R0lGODlhAQABAPAA${triplet(0, r, g) + triplet(b, 255, 255)}/yH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==`