taiko/lib/elements/colorFinder.js

Taiko is a Node.js library for automating Chromium based browsers

function isHexColor(value) {
  const hexValue = value.charAt(0) === "#" ? value.substring(1) : value;
  return (
    typeof hexValue === "string" &&
    hexValue.length === 6 &&
    !Number.isNaN(Number(`0x${hexValue}`))
  );
}

function isRgb(rgb) {
  const values = rgb.match(/\d+/g).map(Number);
  return values.length === 3;
}

function isValidColor(value) {
  if (isHexColor(value)) {
    this.hex = true;
    return true;
  }
  if (isRgb(value)) {
    this.rgb = true;
    return true;
  }
  return false;
}

function convertFullRGBToHex(value) {
  const [r, g, b] = value.match(/\d+/g).map(Number);
  const red = rgbToHex(r);
  const green = rgbToHex(g);
  const blue = rgbToHex(b);
  return `#${red}${green}${blue}`;
}

function rgbToHex(rgb) {
  let hex = Number(rgb).toString(16);
  if (hex.length < 2) {
    hex = `0${hex}`;
  }
  return hex;
}

module.exports = {
  convertFullRGBToHex,
  isValidColor,
  isRgb,
};