<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [puppeteer](./puppeteer.md) > [CDPSessionOnMessageObject](./puppeteer.cdpsessiononmessageobject.md) > [params](./puppeteer.cdpsessiononmessageobject.params.md) ## CDPSessionOnMessageObject.params property <b>Signature:</b> ```typescript params: Record<string, unknown>; ```