src/color.js
// toCSSValue() is never be called
toCSSValue() is never be called
toCSSValue () is never be called
toCSSValue() {
    return (
      'hsla(' +
      this.hue + ', ' +
      100 * this.saturation + '%, ' +
      100 * this.lightness + '%, ' + this.alpha +
      ')'
    );
  }
toCSSValue ( ) { return ( 'hsla(' + this . hue + ', ' + 100 * this . saturation + '%, ' + 100 * this . lightness + '%, ' + this . alpha + ')' ) ; }
toCSSValue() is never be called
toCSSValue () is never be called