JavaScript

All standard JavaScript functions and ECMAScript language constructs are supported. The scripts are executed in a sandbox Virtual Machine and do not have access to the operating system or Node.js packages. The following packages are supported. All values are returned as promises and can be obtained using the await statement. When the functions are used in importers the await is automatically included.

Package	Function	Returns	Parameter	Example
general	print(message)	void	message	'Hello Earth'
	error(message)	void	message	'No object found'
	sleep(seconds)	void	seconds	5
state	state.get(topic)	state	topic	'asset.hvac.bosch.temperature'
	state.set(topic, value)	void	topic	'weather.eindhoven.pressure'
		void	value	1013
http	http.get(url)	body	url	https://google.com
	http.post(url, data[, options])	body	url	https://app.mydomain.com/login
		body	data	{"username": "bob"}
		body	options	{"headers": ["Content-Type", "application/json"]}
	http.request(options)	response	options	{url: "https://app.mydomain.com/login"}
		response	options	{"headers": ["Content-Type", "application/json"]}
		response	options	{maxRedirects: 0} }
mqtt	mqtt.get(topic)	text	topic	'/building_a/room_b/temperature'
	mqtt.publish(topic, message [, options])	text	topic	'/building_a/room_b/temperature'
		text	message	{"temperature", 12}
		text	options	{qos: 1}
		text	options	{retain: true}