@lcrespilho/playwright-fixtures

PubSub

Kind: global class

• PubSub
  • new PubSub()
  • .subscribe(subscriber)
  • .unsubscribe(subscriber)
  • .publish(message)
  • .waitForMessage([config]) ⇒ Promise.<Message>

new PubSub()

Utilizes the Observer Pattern, where the Page is the producer and the Node Playwright Test is the consumer. Every time the Page produces a message (window.dataLayer.push, or GA-Universal/GA4 network request), the consumer's subscribers callbacks are called.

pubSub.subscribe(subscriber)

Subscribe for messages. Used by the consumer.

Kind: instance method of PubSub

Param	Type	Description
subscriber	function	callback function to be executed once the message arrives

pubSub.unsubscribe(subscriber)

Unsubscribe from messages. Used by the consumer.

Kind: instance method of PubSub

Param	Type	Description
subscriber	function	reference to a callback function previously subscribed

pubSub.publish(message)

Publish messages. Used by the producer.

Kind: instance method of PubSub

Param	Type	Description
message	Message	message published.

pubSub.waitForMessage([config]) ⇒ Promise.<Message>

Returns a promise that will be resolved when a message matching WaitForMessageOptions is found, or rejected if WaitForMessageOptions.timeout is reached. Used by the consumer.

Kind: instance method of PubSub
Returns: Promise.<Message> - message published.

Param	Type
[config]	WaitForMessageOptions

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How to publish to npm registry

https://www.youtube.com/watch?v=Nh9xW2-ZOEU