{"version":3,"file":"isCloudflareClass.js","sources":["../../../src/utils/isCloudflareClass.ts"],"sourcesContent":["import type { DurableObject, WorkflowEntrypoint } from 'cloudflare:workers';\nimport type { WorkerEntrypointConstructor } from '../instrumentations/instrumentWorkerEntrypoint';\ntype CloudflareClassName = 'WorkerEntrypoint' | 'DurableObject' | 'WorkflowEntrypoint';\n\n/**\n * Checks if a class constructor extends a specific Cloudflare base class.\n *\n * Uses prototype chain walking with constructor names rather than instanceof,\n * so it works in Node at build time without requiring the cloudflare:workers\n * module (which only exists in the Workers runtime).\n *\n * This is used to differentiate between different Cloudflare worker types:\n * - WorkerEntrypoint: Class-based workers (used with instrumentWorkerEntrypoint)\n * - DurableObject: Durable Object classes\n * - Workflow: Workflow classes\n *\n * For ExportedHandler (plain objects), this will return false for all types.\n *\n * @param value - The value to check (typically a class constructor)\n * @param className - The Cloudflare base class name to check against\n * @returns true if the value is a class that extends the specified Cloudflare class\n *\n * @example\n * ```ts\n * isCloudflareClass(MyWorker, 'WorkerEntrypoint') // true if MyWorker extends WorkerEntrypoint\n * isCloudflareClass(MyDO, 'DurableObject') // true if MyDO extends DurableObject\n * ```\n */\nexport function isCloudflareClass(value: unknown, className: 'WorkerEntrypoint'): value is WorkerEntrypointConstructor;\nexport function isCloudflareClass(\n  value: unknown,\n  className: 'DurableObject',\n): value is new (...args: unknown[]) => DurableObject;\nexport function isCloudflareClass(\n  value: unknown,\n  className: 'WorkflowEntrypoint',\n): value is new (...args: unknown[]) => WorkflowEntrypoint;\nexport function isCloudflareClass(value: unknown, className: CloudflareClassName): boolean {\n  if (!value || typeof value !== 'function') {\n    return false;\n  }\n\n  if (value.name === className) {\n    return false;\n  }\n\n  let proto: object | null = value.prototype;\n\n  while (proto) {\n    const ctor = (proto as { constructor?: { name?: string } }).constructor;\n    const constructorName = ctor?.name;\n\n    if (constructorName === className) {\n      return true;\n    }\n\n    proto = Object.getPrototypeOf(proto);\n  }\n\n  return false;\n}\n"],"names":[],"mappings":";;AAqCO,SAAS,iBAAA,CAAkB,OAAgB,SAAA,EAAyC;AACzF,EAAA,IAAI,CAAC,KAAA,IAAS,OAAO,KAAA,KAAU,UAAA,EAAY;AACzC,IAAA,OAAO,KAAA;AAAA,EACT;AAEA,EAAA,IAAI,KAAA,CAAM,SAAS,SAAA,EAAW;AAC5B,IAAA,OAAO,KAAA;AAAA,EACT;AAEA,EAAA,IAAI,QAAuB,KAAA,CAAM,SAAA;AAEjC,EAAA,OAAO,KAAA,EAAO;AACZ,IAAA,MAAM,OAAQ,KAAA,CAA8C,WAAA;AAC5D,IAAA,MAAM,kBAAkB,IAAA,EAAM,IAAA;AAE9B,IAAA,IAAI,oBAAoB,SAAA,EAAW;AACjC,MAAA,OAAO,IAAA;AAAA,IACT;AAEA,IAAA,KAAA,GAAQ,MAAA,CAAO,eAAe,KAAK,CAAA;AAAA,EACrC;AAEA,EAAA,OAAO,KAAA;AACT;;;;"}