Tweak type requirement

code/lib/components/src/icon/icon.tsx

@@ -20,12 +20,12 @@ const Svg = styled.svg`
  * - *decorative only*: for example, it illustrates a label next to it. We must ensure that it is ignored by screen readers, by setting `aria-hidden` attribute (ex: `<Icon icon="check" aria-hidden />`)
  * - *non-decorative*: it means that it delivers information. For example, an icon as only child in a button. The meaning can be obvious visually, but it must have a proper text alternative via `aria-label` for screen readers. (ex: `<Icon icon="print" aria-label="Print this document" />`)
  */
-export interface IconProps {
-  icon: IconType;
+export interface IconsProps {
+  icon?: IconType;
   symbol?: IconType;
 }
 
-export const Icons: FunctionComponent<IconProps> = ({ icon, symbol, ...props }: IconProps) => {
+export const Icons: FunctionComponent<IconsProps> = ({ icon, symbol, ...props }: IconsProps) => {
   return (
     <Svg viewBox="0 0 14 14" width="14px" height="14px" {...props}>
       {symbol ? <use xlinkHref={`#icon--${symbol}`} /> : icons[icon]}