build/web/c0.js
function isInternalComponentType(type) {
  return (
    typeof type === 'function' &&
    typeof type.prototype !== 'undefined' &&
    typeof type.prototype.mountComponent === 'function' &&
    typeof type.prototype.receiveComponent === 'function'
  );
}
function isInternalComponentType(type) {
  return (
    typeof type === 'function' &&
    typeof type.prototype !== 'undefined' &&
    typeof type.prototype.mountComponent === 'function' &&
    typeof type.prototype.receiveComponent === 'function'
  );
}
function isInternalComponentType ( type ) { return ( typeof type === 'function' && typeof type . prototype !== 'undefined' && typeof type . prototype . mountComponent === 'function' && typeof type . prototype . receiveComponent === 'function' ) ; }
Check if the type reference is a known internal type. I.e. not a user
provided composite type.

@param {function} type
@return {boolean} Returns true if this is a valid internal type.
Check if the type reference is a known internal type . I . e . not a user provided composite type .