score:2
Accepted answer
You can use Array.slice which returns a shallow copy of your original array minus the sliced items. DO NOT use shift() which actually mutates your state and can cause all sorts of issues.
return [...state.slice(1), action.payload.stream]
score:0
Array#shift returns the shifted value, not the array with the value removed (it shifts it in-place).
You can do
state.shift()
[ ...state, action.payload.steam ]
although I'm pretty sure Redux docs specify that you should avoid acting on the state directly...
Source: stackoverflow.com
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