Function checkComponent

06.Router/basic/js/vue.js:7340–7362

* Check if an element is a component. If yes, return * a component link function. * * @param {Element} el * @param {Object} options * @return {Function|undefined}

(el, options)

   */

  function checkComponent(el, options) {
    var component = checkComponentAttr(el, options);
    if (component) {
      var ref = findRef(el);
      var descriptor = {
        name: 'component',
        ref: ref,
        expression: component.id,
        def: internalDirectives.component,
        modifiers: {
          literal: !component.dynamic
        }
      };
      var componentLinkFn = function componentLinkFn(vm, el, host, scope, frag) {
        if (ref) {
          defineReactive((scope || vm).$refs, ref, null);
        }
        vm._bindDir(descriptor, el, host, scope, frag);
      };
      componentLinkFn.terminal = true;
      return componentLinkFn;
    }
  }

  /**
   * Check an element for terminal directives in fixed order.