PgPubSub.once() method

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

Signature:

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

Parameters

Parameter	Type	Description
event	'connect'	`'connect'` — a PostgreSQL connection has been established
listener	typeof connect	handler invoked when a PostgreSQL connection has been established. Fires at most once.

Returns:

this

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