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{"version":3,"file":"handleRequest-Y97UwBbF.mjs","names":[],"sources":["../../src/utils/isPropertyAccessible.ts","../../src/utils/emitAsync.ts","../../src/utils/isObject.ts","../../src/utils/responseUtils.ts","../../src/utils/isNodeLikeError.ts","../../src/utils/handleRequest.ts"],"sourcesContent":["/**\n * A function that validates if property access is possible on an object\n * without throwing. It returns `true` if the property access is possible\n * and `false` otherwise.\n *\n * Environments like miniflare will throw on property access on certain objects\n * like Request and Response, for unimplemented properties.\n */\nexport function isPropertyAccessible<Obj extends Record<string, any>>(\n obj: Obj,\n key: keyof Obj\n) {\n try {\n obj[key]\n return true\n } catch {\n return false\n }\n}\n","import { Emitter, EventMap } from 'strict-event-emitter'\n\n/**\n * Emits an event on the given emitter but executes\n * the listeners sequentially. This accounts for asynchronous\n * listeners (e.g. those having \"sleep\" and handling the request).\n */\nexport async function emitAsync<\n Events extends EventMap,\n EventName extends keyof Events\n>(\n emitter: Emitter<Events>,\n eventName: EventName,\n ...data: Events[EventName]\n): Promise<void> {\n const listeners = emitter.listeners(eventName)\n\n if (listeners.length === 0) {\n return\n }\n\n for (const listener of listeners) {\n await listener.apply(emitter, data)\n }\n}\n","/**\n * Determines if a given value is an instance of object.\n */\nexport function isObject<T>(value: any, loose = false): value is T {\n return loose\n ? Object.prototype.toString.call(value).startsWith('[object ')\n : Object.prototype.toString.call(value) === '[object Object]'\n}\n","import { isObject } from './isObject'\nimport { isPropertyAccessible } from './isPropertyAccessible'\n\n/**\n * Creates a generic 500 Unhandled Exception response.\n */\nexport function createServerErrorResponse(body: unknown): Response {\n return new Response(\n JSON.stringify(\n body instanceof Error\n ? {\n name: body.name,\n message: body.message,\n stack: body.stack,\n }\n : body\n ),\n {\n status: 500,\n statusText: 'Unhandled Exception',\n headers: {\n 'Content-Type': 'application/json',\n },\n }\n )\n}\n\nexport type ResponseError = Response & { type: 'error' }\n\n/**\n * Check if the given response is a `Response.error()`.\n *\n * @note Some environments, like Miniflare (Cloudflare) do not\n * implement the \"Response.type\" property and throw on its access.\n * Safely check if we can access \"type\" on \"Response\" before continuing.\n * @see https://github.com/mswjs/msw/issues/1834\n */\nexport function isResponseError(response: unknown): response is ResponseError {\n return (\n response != null &&\n response instanceof Response &&\n isPropertyAccessible(response, 'type') &&\n response.type === 'error'\n )\n}\n\n/**\n * Check if the given value is a `Response` or a Response-like object.\n * This is different from `value instanceof Response` because it supports\n * custom `Response` constructors, like the one when using Undici directly.\n */\nexport function isResponseLike(value: unknown): value is Response {\n return (\n isObject<Record<string, any>>(value, true) &&\n isPropertyAccessible(value, 'status') &&\n isPropertyAccessible(value, 'statusText') &&\n isPropertyAccessible(value, 'bodyUsed')\n )\n}\n","export function isNodeLikeError(\n error: unknown\n): error is NodeJS.ErrnoException {\n if (error == null) {\n return false\n }\n\n if (!(error instanceof Error)) {\n return false\n }\n\n return 'code' in error && 'errno' in error\n}\n","import type { Emitter } from 'strict-event-emitter'\nimport { DeferredPromise } from '@open-draft/deferred-promise'\nimport { until } from '@open-draft/until'\nimport type { HttpRequestEventMap } from '../glossary'\nimport { emitAsync } from './emitAsync'\nimport { RequestController } from '../RequestController'\nimport {\n createServerErrorResponse,\n isResponseError,\n isResponseLike,\n} from './responseUtils'\nimport { InterceptorError } from '../InterceptorError'\nimport { isNodeLikeError } from './isNodeLikeError'\nimport { isObject } from './isObject'\n\ninterface HandleRequestOptions {\n requestId: string\n request: Request\n emitter: Emitter<HttpRequestEventMap>\n controller: RequestController\n}\n\nexport async function handleRequest(\n options: HandleRequestOptions\n): Promise<void> {\n const handleResponse = async (\n response: Response | Error | Record<string, any>\n ) => {\n if (response instanceof Error) {\n await options.controller.errorWith(response)\n return true\n }\n\n // Handle \"Response.error()\" instances.\n if (isResponseError(response)) {\n await options.controller.respondWith(response)\n return true\n }\n\n /**\n * Handle normal responses or response-like objects.\n * @note This must come before the arbitrary object check\n * since Response instances are, in fact, objects.\n */\n if (isResponseLike(response)) {\n await options.controller.respondWith(response)\n return true\n }\n\n // Handle arbitrary objects provided to `.errorWith(reason)`.\n if (isObject(response)) {\n await options.controller.errorWith(response)\n return true\n }\n\n return false\n }\n\n const handleResponseError = async (error: unknown): Promise<boolean> => {\n // Forward the special interceptor error instances\n // to the developer. These must not be handled in any way.\n if (error instanceof InterceptorError) {\n throw result.error\n }\n\n // Support mocking Node.js-like errors.\n if (isNodeLikeError(error)) {\n await options.controller.errorWith(error)\n return true\n }\n\n // Handle thrown responses.\n if (error instanceof Response) {\n return await handleResponse(error)\n }\n\n return false\n }\n\n // Add the last \"request\" listener to check if the request\n // has been handled in any way. If it hasn't, resolve the\n // response promise with undefined.\n // options.emitter.once('request', async ({ requestId: pendingRequestId }) => {\n // if (\n // pendingRequestId === options.requestId &&\n // options.controller.readyState === RequestController.PENDING\n // ) {\n // await options.controller.passthrough()\n // }\n // })\n\n const requestAbortPromise = new DeferredPromise<void, unknown>()\n\n /**\n * @note `signal` is not always defined in React Native.\n */\n if (options.request.signal) {\n if (options.request.signal.aborted) {\n await options.controller.errorWith(options.request.signal.reason)\n return\n }\n\n options.request.signal.addEventListener(\n 'abort',\n () => {\n requestAbortPromise.reject(options.request.signal.reason)\n },\n { once: true }\n )\n }\n\n const result = await until(async () => {\n // Emit the \"request\" event and wait until all the listeners\n // for that event are finished (e.g. async listeners awaited).\n // By the end of this promise, the developer cannot affect the\n // request anymore.\n const requestListenersPromise = emitAsync(options.emitter, 'request', {\n requestId: options.requestId,\n request: options.request,\n controller: options.controller,\n })\n\n await Promise.race([\n // Short-circuit the request handling promise if the request gets aborted.\n requestAbortPromise,\n requestListenersPromise,\n options.controller.handled,\n ])\n })\n\n // Handle the request being aborted while waiting for the request listeners.\n if (requestAbortPromise.state === 'rejected') {\n await options.controller.errorWith(requestAbortPromise.rejectionReason)\n return\n }\n\n if (result.error) {\n // Handle the error during the request listener execution.\n // These can be thrown responses or request errors.\n if (await handleResponseError(result.error)) {\n return\n }\n\n // If the developer has added \"unhandledException\" listeners,\n // allow them to handle the error. They can translate it to a\n // mocked response, network error, or forward it as-is.\n if (options.emitter.listenerCount('unhandledException') > 0) {\n // Create a new request controller just for the unhandled exception case.\n // This is needed because the original controller might have been already\n // interacted with (e.g. \"respondWith\" or \"errorWith\" called on it).\n const unhandledExceptionController = new RequestController(\n options.request,\n {\n /**\n * @note Intentionally empty passthrough handle.\n * This controller is created within another controller and we only need\n * to know if `unhandledException` listeners handled the request.\n */\n passthrough() {},\n async respondWith(response) {\n await handleResponse(response)\n },\n async errorWith(reason) {\n /**\n * @note Handle the result of the unhandled controller\n * in the same way as the original request controller.\n * The exception here is that thrown errors within the\n * \"unhandledException\" event do NOT result in another\n * emit of the same event. 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