@atlaskit/adf-schema/dist/es2019/utils/normalize-hex-color.js

Shared package that contains the ADF-schema (json) and ProseMirror node/mark specs

import * as namedColors from 'css-color-names'; // eslint-disable-line import/no-namespace

import { isHex } from './is-hex';
import { isRgb } from './is-rgb';
import { rgbToHex } from './rgb-to-hex';

/**
 * @returns String with HEX-coded color.
 */
export function normalizeHexColor(color, defaultColor) {
  if (!color) {
    return null;
  }

  // Normalize to hex
  color = color.trim().toLowerCase();
  if (isHex(color)) {
    // Normalize 3-hex to 6-hex colours
    if (color.length === 4) {
      color = color.split('').map(c => c === '#' ? '#' : `${c}${c}`).join('');
    }
  } else if (isRgb(color)) {
    return rgbToHex(color);
  } else {
    // http://dev.w3.org/csswg/css-color/#named-colors
    if (color === 'default') {
      return null;
    } else if (
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    namedColors.default &&
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    namedColors.default[color]) {
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      color = namedColors.default[color];
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
    } else if (namedColors && namedColors[color]) {
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      color = namedColors[color];
    } else {
      return null;
    }
  }
  if (color === defaultColor) {
    return null;
  }
  return color;
}