puppeteer/website/versioned_docs/version-22.10.0/api/puppeteer.commoneventemitter.once.md

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CommonEventEmitter.once

CommonEventEmitter.once() method

Signature:

interface CommonEventEmitter {
  once<Key extends keyof Events>(
    type: Key,
    handler: Handler<Events[Key]>
  ): this;
}

Parameters

Parameter	Type	Description
type	Key
handler	Handler<Events[Key]>

**Returns:**

this