[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Debugger](./puppeteer.protocol.debugger.md) > [EvaluateOnCallFrameRequest](./puppeteer.protocol.debugger.evaluateoncallframerequest.md) > [throwOnSideEffect](./puppeteer.protocol.debugger.evaluateoncallframerequest.throwonsideeffect.md) ## Protocol.Debugger.EvaluateOnCallFrameRequest.throwOnSideEffect property Whether to throw an exception if side effect cannot be ruled out during evaluation. Signature: ```typescript throwOnSideEffect?: boolean; ```