todoListReducer.js

const todoListReducer = (
  state: string[],
  action: { type: string; value: string }
) => {
  switch (action.type) {
    case "ADD":
      return [...state, action.value];
    case "REMOVE":
      return state.filter((todo: string) => todo !== action.value);
    default:
      return state;
  }
};