reducer-kit

100 LOC type-safe react state management with use-reducer for component.

Usage

import React from "react";
import { render } from "react-dom";
import { Action, createKit, Dispatch, Selector } from "reducer-kit";

const CounterKit = createKit({
  initialState: {
    count: 0
  },
  reducers: {
    inc(state, action: Action<number>) {
      state.count += action.payload;
    }
  }
});

type CounterKitType = typeof CounterKit;

const inc = (dispatch: Dispatch<CounterKitType>) => {
  dispatch({
    type: "inc",
    payload: 1
  });
};

const selectCount: Selector<CounterKitType> = (state) => state.count;

const Counter: React.FC = () => {
  const count = CounterKit.useSelector(selectCount);
  const dispatch = CounterKit.useDispatch();

  return (
    <button className="button" onClick={() => inc(dispatch)}>
      CLICK {count}
    </button>
  );
};

const App: React.FC = () => {
  return (
    <CounterKit.Provider>
      <Counter />
    </CounterKit.Provider>
  );
};

render(<App />, document.body);

Why reducer-kit

• Easy and lightweight, 100 LOC with use-context-selector、immer、and useReducer.
• Minimal re-render with useSelector.
• Type safe.
• For component with Provider.

Examples

See demo in CodeSandbox.