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Solution #2514

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Solution #2514

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Patryk-Filipiak Jun 23, 2023
e5d8c61
added default case
Patryk-Filipiak Jul 26, 2023
d86cebf
New line after break added
Patryk-Filipiak Jul 26, 2023
d765d41
updated
Patryk-Filipiak Jul 26, 2023
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21 changes: 20 additions & 1 deletion src/transformState.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,26 @@
* @param {Object[]} actions
*/
function transformState(state, actions) {
// write code here
for (const action of actions) {
switch (action.type) {
case 'addProperties':
Object.assign(state, action.extraData);
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this can also be achieved using spread operator which is more common nowadays

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Are you sure? The state object should be mutable, and the spread operator creates a copy of it without mutating it. I also cannot change the values of the state because parameters of a function cannot be reassigned, in my opinion its the best way to do

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That's correct, it's very nice that you provided an argument.

break;

case 'removeProperties':
action.keysToRemove.forEach(key => delete state[key]);
break;

case 'clear':
Object.keys(state).forEach(key => delete state[key]);
break;
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please add empty line after break so it's easier to read

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done


default:
throw new Error('Invalid action: ' + action);
}
}

return state;
}

module.exports = transformState;
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