ReactJs warning: Mutating `style` is deprecated. Consider cloning it beforehand

Question

I am receving the following warning:

inWarning: `div` was passed a style object that has previously been mutated. Mutating `style` is deprecated. Consider clonin         


        

Answer 1

You are not cloning the previewColorHover

  var clone = Object.assign({}, this.styles.previewColorHover);
   this.styles.previewColorHover = clone;
   this.styles.previewColorHover.backgroundColor = this.state.selectedColor.hex