sonzai/reducers/subjects.js

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import { v4 } from "react-native-uuid";
export default function subjects(state, action) {
if (typeof state === "undefined")
return [];
switch(action.type) {
case "ADD_SUBJECT":
return [ ...state, { name: action.subject, id: v4() } ];
case "REMOVE_SUBJECT":
return state.filter(item => item.id != action.id);
default:
return state;
}
}