text: /* eslint-disable no-use-before-define */
  
  /**
   * Returns a number whose value is limited to the given range.
   *
   * @param {number} value The value to be clamped
   * @param {number} min The lower boundary of the output range
   * @param {number} max The upper boundary of the output range
   * @returns {number} A number in the range [min, max]
   */
  function clamp(value) {
    var min = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
    var max = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;
  
    if (process.env.NODE_ENV !== 'production') {
      if (value < min || value > max) {
        console.error("Material-UI: the value provided ".concat(value, " is out of range [").concat(min, ", ").concat(max, "]."));
      }
    }
  
    if (value < min) {
      return min;
    }
  
    if (value > max) {
      return max;
    }
  
    return value;
  }
  /**
   * Converts a color from CSS hex format to CSS rgb format.
   *
   * @param {string} color - Hex color, i.e. #nnn or #nnnnnn
   * @returns {string} A CSS rgb color string
   */
  
  
  export function hexToRgb(color) {
    color = color.substr(1);
    var re = new RegExp(".{1,".concat(color.length / 3, "}"), 'g');
    var colors = color.match(re);
  
    if (colors && colors[0].length === 1) {
      colors = colors.map(function (n) {
        return n + n;
      });
    }
  
    return colors ? "rgb(".concat(colors.map(function (n) {
      return parseInt(n, 16);
    }).join(', '), ")") : '';
  }
  
  function intToHex(int) {
    var hex = int.toString(16);
    return hex.length === 1 ? "0".concat(hex) : hex;
  }
  /**
   * Converts a color from CSS rgb format to CSS hex format.
   *
   * @param {string} color - RGB color, i.e. rgb(n, n, n)
   * @returns {string} A CSS rgb color string, i.e. #nnnnnn
   */
  
  
  export function rgbToHex(color) {
    // Idempotent
    if (color.indexOf('#') === 0) {
      return color;
    }
  
    var _decomposeColor = decomposeColor(color),
        values = _decomposeColor.values;
  
    return "#".concat(values.map(function (n) {
      return intToHex(n);
    }).join(''));
  }
  /**
   * Converts a color from hsl format to rgb format.
   *
   * @param {string} color - HSL color values
   * @returns {string} rgb color values
   */
  
  export function hslToRgb(color) {
    color = decomposeColor(color);
    var _color = color,
        values = _color.values;
    var h = values[0];
    var s = values[1] / 100;
    var l = values[2] / 100;
    var a = s * Math.min(l, 1 - l);
  
    var f = function f(n) {
      var k = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : (n + h / 30) % 12;
      return l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);
    };
  
    var type = 'rgb';
    var rgb = [Math.round(f(0) * 255), Math.round(f(8) * 255), Math.round(f(4) * 255)];
  
    if (color.type === 'hsla') {
      type += 'a';
      rgb.push(values[3]);
    }
  
    return recomposeColor({
      type: type,
      values: rgb
    });
  }
  /**
   * Returns an object with the type and values of a color.
   *
   * Note: Does not support rgb % values.
   *
   * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @returns {object} - A MUI color object: {type: string, values: number[]}
   */
  
  export function decomposeColor(color) {
    // Idempotent
    if (color.type) {
      return color;
    }
  
    if (color.charAt(0) === '#') {
      return decomposeColor(hexToRgb(color));
    }
  
    var marker = color.indexOf('(');
    var type = color.substring(0, marker);
  
    if (['rgb', 'rgba', 'hsl', 'hsla'].indexOf(type) === -1) {
      throw new Error(["Material-UI: unsupported `".concat(color, "` color."), 'We support the following formats: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla().'].join('\n'));
    }
  
    var values = color.substring(marker + 1, color.length - 1).split(',');
    values = values.map(function (value) {
      return parseFloat(value);
    });
    return {
      type: type,
      values: values
    };
  }
  /**
   * Converts a color object with type and values to a string.
   *
   * @param {object} color - Decomposed color
   * @param {string} color.type - One of: 'rgb', 'rgba', 'hsl', 'hsla'
   * @param {array} color.values - [n,n,n] or [n,n,n,n]
   * @returns {string} A CSS color string
   */
  
  export function recomposeColor(color) {
    var type = color.type;
    var values = color.values;
  
    if (type.indexOf('rgb') !== -1) {
      // Only convert the first 3 values to int (i.e. not alpha)
      values = values.map(function (n, i) {
        return i < 3 ? parseInt(n, 10) : n;
      });
    } else if (type.indexOf('hsl') !== -1) {
      values[1] = "".concat(values[1], "%");
      values[2] = "".concat(values[2], "%");
    }
  
    return "".concat(type, "(").concat(values.join(', '), ")");
  }
  /**
   * Calculates the contrast ratio between two colors.
   *
   * Formula: https://www.w3.org/TR/WCAG20-TECHS/G17.html#G17-tests
   *
   * @param {string} foreground - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @param {string} background - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @returns {number} A contrast ratio value in the range 0 - 21.
   */
  
  export function getContrastRatio(foreground, background) {
    var lumA = getLuminance(foreground);
    var lumB = getLuminance(background);
    return (Math.max(lumA, lumB) + 0.05) / (Math.min(lumA, lumB) + 0.05);
  }
  /**
   * The relative brightness of any point in a color space,
   * normalized to 0 for darkest black and 1 for lightest white.
   *
   * Formula: https://www.w3.org/TR/WCAG20-TECHS/G17.html#G17-tests
   *
   * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @returns {number} The relative brightness of the color in the range 0 - 1
   */
  
  export function getLuminance(color) {
    color = decomposeColor(color);
    var rgb = color.type === 'hsl' ? decomposeColor(hslToRgb(color)).values : color.values;
    rgb = rgb.map(function (val) {
      val /= 255; // normalized
  
      return val <= 0.03928 ? val / 12.92 : Math.pow((val + 0.055) / 1.055, 2.4);
    }); // Truncate at 3 digits
  
    return Number((0.2126 * rgb[0] + 0.7152 * rgb[1] + 0.0722 * rgb[2]).toFixed(3));
  }
  /**
   * Darken or lighten a color, depending on its luminance.
   * Light colors are darkened, dark colors are lightened.
   *
   * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @param {number} coefficient=0.15 - multiplier in the range 0 - 1
   * @returns {string} A CSS color string. Hex input values are returned as rgb
   */
  
  export function emphasize(color) {
    var coefficient = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0.15;
    return getLuminance(color) > 0.5 ? darken(color, coefficient) : lighten(color, coefficient);
  }
  /**
   * Set the absolute transparency of a color.
   * Any existing alpha values are overwritten.
   *
   * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @param {number} value - value to set the alpha channel to in the range 0 -1
   * @returns {string} A CSS color string. Hex input values are returned as rgb
   */
  
  export function fade(color, value) {
    color = decomposeColor(color);
    value = clamp(value);
  
    if (color.type === 'rgb' || color.type === 'hsl') {
      color.type += 'a';
    }
  
    color.values[3] = value;
    return recomposeColor(color);
  }
  /**
   * Darkens a color.
   *
   * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @param {number} coefficient - multiplier in the range 0 - 1
   * @returns {string} A CSS color string. Hex input values are returned as rgb
   */
  
  export function darken(color, coefficient) {
    color = decomposeColor(color);
    coefficient = clamp(coefficient);
  
    if (color.type.indexOf('hsl') !== -1) {
      color.values[2] *= 1 - coefficient;
    } else if (color.type.indexOf('rgb') !== -1) {
      for (var i = 0; i < 3; i += 1) {
        color.values[i] *= 1 - coefficient;
      }
    }
  
    return recomposeColor(color);
  }
  /**
   * Lightens a color.
   *
   * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()
   * @param {number} coefficient - multiplier in the range 0 - 1
   * @returns {string} A CSS color string. Hex input values are returned as rgb
   */
  
  export function lighten(color, coefficient) {
    color = decomposeColor(color);
    coefficient = clamp(coefficient);
  
    if (color.type.indexOf('hsl') !== -1) {
      color.values[2] += (100 - color.values[2]) * coefficient;
    } else if (color.type.indexOf('rgb') !== -1) {
      for (var i = 0; i < 3; i += 1) {
        color.values[i] += (255 - color.values[i]) * coefficient;
      }
    }
  
    return recomposeColor(color);
  }