{
  "version": 3,
  "sources": ["../../src/utils/colors.js"],
  "sourcesContent": ["/**\n * External dependencies\n */\nimport memoize from 'memize';\nimport { colord, extend } from 'colord';\nimport namesPlugin from 'colord/plugins/names';\n\n/** @type {HTMLDivElement} */\nlet colorComputationNode;\nextend([namesPlugin]);\n\n/**\n * Generating a CSS compliant rgba() color value.\n *\n * @param {string} hexValue The hex value to convert to rgba().\n * @param {number} alpha    The alpha value for opacity.\n * @return {string} The converted rgba() color value.\n *\n * @example\n * rgba( '#000000', 0.5 )\n * // rgba(0, 0, 0, 0.5)\n */\nexport function rgba(hexValue = '', alpha = 1) {\n  return colord(hexValue).alpha(alpha).toRgbString();\n}\n\n/**\n * @return {HTMLDivElement | undefined} The HTML element for color computation.\n */\nfunction getColorComputationNode() {\n  if (typeof document === 'undefined') {\n    return;\n  }\n  if (!colorComputationNode) {\n    // Create a temporary element for style computation.\n    const el = document.createElement('div');\n    el.setAttribute('data-g2-color-computation-node', '');\n    // Inject for window computed style.\n    document.body.appendChild(el);\n    colorComputationNode = el;\n  }\n  return colorComputationNode;\n}\n\n/**\n * @param {string | unknown} value\n *\n * @return {boolean} Whether the value is a valid color.\n */\nfunction isColor(value) {\n  if (typeof value !== 'string') {\n    return false;\n  }\n  const test = colord(value);\n  return test.isValid();\n}\n\n/**\n * Retrieves the computed background color. This is useful for getting the\n * value of a CSS variable color.\n *\n * @param {string | unknown} backgroundColor The background color to compute.\n *\n * @return {string} The computed background color.\n */\nfunction _getComputedBackgroundColor(backgroundColor) {\n  if (typeof backgroundColor !== 'string') {\n    return '';\n  }\n  if (isColor(backgroundColor)) {\n    return backgroundColor;\n  }\n  if (!backgroundColor.includes('var(')) {\n    return '';\n  }\n  if (typeof document === 'undefined') {\n    return '';\n  }\n\n  // Attempts to gracefully handle CSS variables color values.\n  const el = getColorComputationNode();\n  if (!el) {\n    return '';\n  }\n  el.style.background = backgroundColor;\n  // Grab the style.\n  const computedColor = window?.getComputedStyle(el).background;\n  // Reset.\n  el.style.background = '';\n  return computedColor || '';\n}\nconst getComputedBackgroundColor = memoize(_getComputedBackgroundColor);\n\n/**\n * Get the text shade optimized for readability, based on a background color.\n *\n * @param {string | unknown} backgroundColor The background color.\n *\n * @return {string} The optimized text color (black or white).\n */\nexport function getOptimalTextColor(backgroundColor) {\n  const background = getComputedBackgroundColor(backgroundColor);\n  return colord(background).isLight() ? '#000000' : '#ffffff';\n}\n\n/**\n * Get the text shade optimized for readability, based on a background color.\n *\n * @param {string | unknown} backgroundColor The background color.\n *\n * @return {string} The optimized text shade (dark or light).\n */\nexport function getOptimalTextShade(backgroundColor) {\n  const result = getOptimalTextColor(backgroundColor);\n  return result === '#000000' ? 'dark' : 'light';\n}"],
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