[Home](./index.md) > [puppeteer](./puppeteer.md) > [CDPSessionOnMessageObject](./puppeteer.cdpsessiononmessageobject.md) ## CDPSessionOnMessageObject interface Signature: ```typescript export interface CDPSessionOnMessageObject ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [error](./puppeteer.cdpsessiononmessageobject.error.md) | { message: string; data: any; } | | | [id?](./puppeteer.cdpsessiononmessageobject.id.md) | number | (Optional) | | [method](./puppeteer.cdpsessiononmessageobject.method.md) | string | | | [params](./puppeteer.cdpsessiononmessageobject.params.md) | Record<string, unknown> | | | [result?](./puppeteer.cdpsessiononmessageobject.result.md) | any | (Optional) |