PgPubSub.once() method

Sets 'error' event handler, which fired only one single time

Signature:

once(event: 'error', listener: typeof error): this;

Parameters

Parameter	Type	Description
event	'error'	`'error'` — an error occurred, including exhausting the reconnect limit
listener	typeof error	handler invoked when an error occurred, including exhausting the reconnect limit. Fires at most once.

Returns:

this

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