40 lines
862 B
JavaScript
40 lines
862 B
JavaScript
// @flow
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import { ReducerRegistry } from '../redux';
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import { APP_WILL_MOUNT, APP_WILL_UNMOUNT } from './actionTypes';
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ReducerRegistry.register('features/base/app', (state = {}, action) => {
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switch (action.type) {
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case APP_WILL_MOUNT: {
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const { app } = action;
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if (state.app !== app) {
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return {
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...state,
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/**
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* The one and only (i.e. singleton) {@link BaseApp} instance
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* which is currently mounted.
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*
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* @type {BaseApp}
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*/
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app
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};
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}
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break;
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}
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case APP_WILL_UNMOUNT:
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if (state.app === action.app) {
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return {
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...state,
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app: undefined
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};
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}
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break;
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}
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return state;
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});
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