type NodeType = VNode | string | number
type Attributes = {[key: string]: string | Function }

export interface View<State, Actions> {
  (state: State, actions: Actions): VNode;
}

/**
 * 仮想DOM
 */
export interface VNode {
  nodeName: keyof ElementTagNameMap
  attributes: Attributes
  children: NodeType[]
}

/**
 * 仮想DOMを生成
 */
export function h(
  nodeName: keyof ElementTagNameMap,
  attributes: Attributes,
  ...children: NodeType[]
): VNode {
  return { nodeName, attributes, children };
}

/**
 * リアルDOMを生成
 */
export function createElement(node: NodeType): HTMLElement | Text {
  if (!isVNode(node)) {
    return document.createTextNode(node.toString());
  }

  const el = document.createElement(node.nodeName)
}

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