function isAllowedComponent(node) {
      const componentName = node.rawName
      return (
        allow.has(componentName) ||
        allow.has(casing.pascalCase(componentName)) ||
        allow.has(casing.kebabCase(componentName))
      )
    }
Check whether the given node is an allowed component or not.
@param {VElement} node The start tag node to check.
@returns {boolean} `true` if the node is an allowed component.