[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Runtime](./puppeteer.protocol.runtime.md) > [ExecutionContextId](./puppeteer.protocol.runtime.executioncontextid.md) ## Protocol.Runtime.ExecutionContextId type Id of an execution context. Signature: ```typescript export type ExecutionContextId = integer; ```