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              /** @jsx element */

const { element, createApp } = deku;
const { createStore } = Redux;

//
const initState = { text: '' };
const store = createStore((state=initState, action) => {
  switch(action.type) {
    case 'UPDATE_TEXT':
      return { text: action.payload };
    default:
      return state;
  }
});

const Markdown = {
  render({ props: { text='' } }) {
    return (
      <div innerHTML={marked(text)}></div>
    );
  }
};

const Editor = {
  render({ props }) {
    const handleEdit = (e) => {
      props.onEdit(e.target.value);
    };
    
    return (
      <textarea onInput={handleEdit}></textarea>
    );
  }
};

const actions = {
  updateText: dispatch => text => {
    dispatch({
      type: 'UPDATE_TEXT',
      payload: text
    });
  }
};

const MarkdownEditor = {
  render({ context, dispatch }) {
    return (
      <main>
        <section>
          <label>Markdown</label>
          <hr />
          <Editor onEdit={actions.updateText(dispatch)} />
        </section>     
        <section>
          <label>Preview</label>
          <hr />
          <Markdown text={context.text} />
        </section>   
      </main>
    ); 
  } 
};

const render = createApp(
  document.getElementById('app'),
  store.dispatch
);

render(
  <MarkdownEditor />,
  store.getState()
);

store.subscribe(() => {
  render(
    <MarkdownEditor />,
    store.getState()
  );
});

            
          
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