ProtocolError is emitted whenever there is an error from the protocol.

TimeoutError is emitted whenever certain operations are terminated due to timeout.

A list of devices to be used with page.emulate(options). Actual list of devices can be found in src/common/DeviceDescriptors.ts.

Puppeteer methods might throw errors if they are unable to fulfill a request. For example, page.waitForSelector(selector[, options]) might fail if the selector doesn't match any nodes during the given timeframe.

A list of network conditions to be used with page.emulateNetworkConditions(networkConditions). Actual list of predefined conditions can be found in src/common/NetworkConditions.ts.

Clears all registered handlers.

Registers a {@link CustomQueryHandler | custom query handler}.