devtools.js

module.exports = function unistoreDevTools(store) {
	var extension = window.__REDUX_DEVTOOLS_EXTENSION__ || window.top.__REDUX_DEVTOOLS_EXTENSION__;
	var ignoreState = false;

	if (!extension) {
		console.warn('Please install/enable Redux devtools extension');
		store.devtools = null;

		return store;
	}

	if (!store.devtools) {
		store.devtools = extension.connect();
		store.devtools.subscribe(function (message) {
			if (message.type === 'DISPATCH' && message.state) {
				ignoreState = (message.payload.type === 'JUMP_TO_ACTION' || message.payload.type === 'JUMP_TO_STATE');
				store.setState(JSON.parse(message.state), true);
			}
		});
		store.devtools.init(store.getState());
		store.subscribe(function (state, action) {
			var actionName = action && action.name || 'setState';

			if (!ignoreState) {
				store.devtools.send(actionName, state);
			} else {
				ignoreState = false;
			}
		});
	}

	return store;
}