catstodon/app/javascript/mastodon/reducers/mutes.js

import Immutable from 'immutable';

import {
	MUTES_INIT_MODAL,
	MUTES_TOGGLE_HIDE_NOTIFICATIONS,
} from '../actions/mutes';

const initialState = Immutable.Map({
	new: Immutable.Map({
		isSubmitting: false,
		account: null,
		notifications: true,
	}),
});

export default function mutes(state = initialState, action) {
	switch (action.type) {
	case MUTES_INIT_MODAL:
		return state.withMutations((state) => {
			state.setIn(['new', 'isSubmitting'], false);
			state.setIn(['new', 'account'], action.account);
			state.setIn(['new', 'notifications'], true);
		});
	case MUTES_TOGGLE_HIDE_NOTIFICATIONS:
		return state.setIn(['new', 'notifications'], !state.getIn(['new', 'notifications']));
	default:
		return state;
	}
}