Tell us what’s happening:
Why code below doesn’t work? The error on test window stated that …
// running test
Dispatching the removeItem action creator should remove items from the state and should NOT mutate state.
// tests completed
… but I use slice() and I don’t mutate the state. Where it could be wrong?
Your code so far
const immutableReducer = (state = [0,1,2,3,4,5], action) => {
switch(action.type) {
case 'REMOVE_ITEM':
// don't mutate state here or the tests will fail
return state.slice(0, action.index + 1).concat(state.slice(action.index + 1));
break;
default:
return state;
}
};
const removeItem = (index) => {
return {
type: 'REMOVE_ITEM',
index
}
}
const store = Redux.createStore(immutableReducer);
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
.
Link to the challenge:
https://learn.freecodecamp.org/front-end-libraries/redux/remove-an-item-from-an-array