src/content/reducers/input.js


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import actions from 'content/actions';

const defaultState = {
  keys: []
};

export default function reducer(state = defaultState, action = {}) {
  switch (action.type) {
  case actions.INPUT_KEY_PRESS:
    return Object.assign({}, state, {
      keys: state.keys.concat([action.key]),
    });
  case actions.INPUT_CLEAR_KEYS:
    return Object.assign({}, state, {
      keys: [],
    });
  default:
    return state;
  }
}