Files
Shifted/node_modules/@mswjs/interceptors/lib/node/handleRequest-Y97UwBbF.mjs
2026-02-10 01:14:19 +00:00

190 lines
6.1 KiB
JavaScript

import { a as InterceptorError, i as RequestController } from "./fetchUtils-CoU35g3M.mjs";
import { DeferredPromise } from "@open-draft/deferred-promise";
import { until } from "@open-draft/until";
//#region src/utils/isPropertyAccessible.ts
/**
* A function that validates if property access is possible on an object
* without throwing. It returns `true` if the property access is possible
* and `false` otherwise.
*
* Environments like miniflare will throw on property access on certain objects
* like Request and Response, for unimplemented properties.
*/
function isPropertyAccessible(obj, key) {
try {
obj[key];
return true;
} catch {
return false;
}
}
//#endregion
//#region src/utils/emitAsync.ts
/**
* Emits an event on the given emitter but executes
* the listeners sequentially. This accounts for asynchronous
* listeners (e.g. those having "sleep" and handling the request).
*/
async function emitAsync(emitter, eventName, ...data) {
const listeners = emitter.listeners(eventName);
if (listeners.length === 0) return;
for (const listener of listeners) await listener.apply(emitter, data);
}
//#endregion
//#region src/utils/isObject.ts
/**
* Determines if a given value is an instance of object.
*/
function isObject(value, loose = false) {
return loose ? Object.prototype.toString.call(value).startsWith("[object ") : Object.prototype.toString.call(value) === "[object Object]";
}
//#endregion
//#region src/utils/responseUtils.ts
/**
* Creates a generic 500 Unhandled Exception response.
*/
function createServerErrorResponse(body) {
return new Response(JSON.stringify(body instanceof Error ? {
name: body.name,
message: body.message,
stack: body.stack
} : body), {
status: 500,
statusText: "Unhandled Exception",
headers: { "Content-Type": "application/json" }
});
}
/**
* Check if the given response is a `Response.error()`.
*
* @note Some environments, like Miniflare (Cloudflare) do not
* implement the "Response.type" property and throw on its access.
* Safely check if we can access "type" on "Response" before continuing.
* @see https://github.com/mswjs/msw/issues/1834
*/
function isResponseError(response) {
return response != null && response instanceof Response && isPropertyAccessible(response, "type") && response.type === "error";
}
/**
* Check if the given value is a `Response` or a Response-like object.
* This is different from `value instanceof Response` because it supports
* custom `Response` constructors, like the one when using Undici directly.
*/
function isResponseLike(value) {
return isObject(value, true) && isPropertyAccessible(value, "status") && isPropertyAccessible(value, "statusText") && isPropertyAccessible(value, "bodyUsed");
}
//#endregion
//#region src/utils/isNodeLikeError.ts
function isNodeLikeError(error) {
if (error == null) return false;
if (!(error instanceof Error)) return false;
return "code" in error && "errno" in error;
}
//#endregion
//#region src/utils/handleRequest.ts
async function handleRequest(options) {
const handleResponse = async (response) => {
if (response instanceof Error) {
await options.controller.errorWith(response);
return true;
}
if (isResponseError(response)) {
await options.controller.respondWith(response);
return true;
}
/**
* Handle normal responses or response-like objects.
* @note This must come before the arbitrary object check
* since Response instances are, in fact, objects.
*/
if (isResponseLike(response)) {
await options.controller.respondWith(response);
return true;
}
if (isObject(response)) {
await options.controller.errorWith(response);
return true;
}
return false;
};
const handleResponseError = async (error) => {
if (error instanceof InterceptorError) throw result.error;
if (isNodeLikeError(error)) {
await options.controller.errorWith(error);
return true;
}
if (error instanceof Response) return await handleResponse(error);
return false;
};
const requestAbortPromise = new DeferredPromise();
/**
* @note `signal` is not always defined in React Native.
*/
if (options.request.signal) {
if (options.request.signal.aborted) {
await options.controller.errorWith(options.request.signal.reason);
return;
}
options.request.signal.addEventListener("abort", () => {
requestAbortPromise.reject(options.request.signal.reason);
}, { once: true });
}
const result = await until(async () => {
const requestListenersPromise = emitAsync(options.emitter, "request", {
requestId: options.requestId,
request: options.request,
controller: options.controller
});
await Promise.race([
requestAbortPromise,
requestListenersPromise,
options.controller.handled
]);
});
if (requestAbortPromise.state === "rejected") {
await options.controller.errorWith(requestAbortPromise.rejectionReason);
return;
}
if (result.error) {
if (await handleResponseError(result.error)) return;
if (options.emitter.listenerCount("unhandledException") > 0) {
const unhandledExceptionController = new RequestController(options.request, {
passthrough() {},
async respondWith(response) {
await handleResponse(response);
},
async errorWith(reason) {
/**
* @note Handle the result of the unhandled controller
* in the same way as the original request controller.
* The exception here is that thrown errors within the
* "unhandledException" event do NOT result in another
* emit of the same event. They are forwarded as-is.
*/
await options.controller.errorWith(reason);
}
});
await emitAsync(options.emitter, "unhandledException", {
error: result.error,
request: options.request,
requestId: options.requestId,
controller: unhandledExceptionController
});
if (unhandledExceptionController.readyState !== RequestController.PENDING) return;
}
await options.controller.respondWith(createServerErrorResponse(result.error));
return;
}
if (options.controller.readyState === RequestController.PENDING) return await options.controller.passthrough();
return options.controller.handled;
}
//#endregion
export { isPropertyAccessible as a, emitAsync as i, isResponseError as n, isObject as r, handleRequest as t };
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