Get status with multiple conditions: if-else chain vs reducing

if-else.js

const resultState = state => {
  if (!inputMatchesResult(state)) {
    return 'unsynced';
  } else if (state.isCalculating) {
    return 'loading';
  } else if (!state.result.success) {
    return 'error';
  } else if (state.result.success) {
    return 'success';
  }
};

reduce.js

const resultState = state => (
  [
    ['success', state.result.success],
    ['error', !state.result.success],
    ['loading', state.isCalculating],
    ['unsynced', !inputMatchesResult(state)],
  ]
    .reduce(
      (outcome, [state, condition]) => (condition ? state : outcome),
    )
);