react-behave/build/es/asyncState.js

A library of behaviors for React applications.

var INITIAL_STATE = {
  value: null,
  error: null,
  pending: false
};
export var START = 'START';
export var SUCCESS = 'SUCCESS';
export var ERROR = 'ERROR';
export function initializeStateWithValue(value) {
  return Object.assign({}, INITIAL_STATE, {
    value: value
  });
}
export function asyncStateReducer(state, action) {
  switch (action.type) {
    case START:
      {
        return Object.assign({}, state, {
          pending: true
        });
      }

    case SUCCESS:
      {
        return {
          value: action.value,
          error: null,
          pending: false
        };
      }

    case ERROR:
      {
        // We don't want to loose a previous value in case of later error.
        return Object.assign({}, state, {
          error: action.error,
          pending: false
        });
      }

    default:
      {
        throw new Error("Unknown action type ".concat(action.type));
      }
  }
}