模拟实现

2024年02月26日

柏拉文

越努力，越幸运

一、Redux

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function createStore(reducer, preloadState) {
  let state = initialState;
  let listeners = [];

  function getState() {
    return state;
  }

  function dispatch(action) {
    state = reducer(state, action);
    listeners.forEach((listener) => {
      listener();
    });
  }

  function subscribe(listener) {
    listener.push(listener);
    return () => {
      listeners = listeners.filter((l) => l !== listener);
    };
  }

  dispatch({ type: "DEFAULT" });
  
  return {
    getState,
    dispatch,
    subscribe,
  };
}

export default createStore;

二、React-Redux

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三、测试

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