PgPubSub.once() method

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

Signature:

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

Parameters

Parameter	Type	Description
event	'listen'	`'listen'` — this process began listening one or more channels
listener	typeof listen	handler invoked when this process began listening one or more channels. Fires at most once.

Returns:

this

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