55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict-local
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* @format
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*/
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import type { JSONSerializable, Page } from "./types";
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type ExposedDevice = $ReadOnly<{
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appId: string,
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id: string,
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name: string,
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sendMessage: (message: JSONSerializable) => void,
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}>;
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type ExposedDebugger = $ReadOnly<{
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userAgent: string | null,
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sendMessage: (message: JSONSerializable) => void,
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}>;
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export type CustomMessageHandlerConnection = $ReadOnly<{
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page: Page,
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device: ExposedDevice,
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debugger: ExposedDebugger,
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}>;
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export type CreateCustomMessageHandlerFn = (
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connection: CustomMessageHandlerConnection
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) => ?CustomMessageHandler;
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/**
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* The device message middleware allows implementers to handle unsupported CDP messages.
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* It is instantiated per device and may contain state that is specific to that device.
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* The middleware can also mark messages from the device or debugger as handled, which stops propagating.
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*/
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export interface CustomMessageHandler {
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/**
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* Handle a CDP message coming from the device.
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* This is invoked before the message is sent to the debugger.
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* When returning true, the message is considered handled and will not be sent to the debugger.
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*/
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handleDeviceMessage(message: JSONSerializable): true | void;
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/**
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* Handle a CDP message coming from the debugger.
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* This is invoked before the message is sent to the device.
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* When returning true, the message is considered handled and will not be sent to the device.
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*/
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handleDebuggerMessage(message: JSONSerializable): true | void;
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}
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