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let outvariant = require("outvariant");
//#region src/InterceptorError.ts
var InterceptorError = class InterceptorError extends Error {
constructor(message) {
super(message);
this.name = "InterceptorError";
Object.setPrototypeOf(this, InterceptorError.prototype);
}
};
//#endregion
//#region src/RequestController.ts
var RequestController = class RequestController {
static {
this.PENDING = 0;
}
static {
this.PASSTHROUGH = 1;
}
static {
this.RESPONSE = 2;
}
static {
this.ERROR = 3;
}
constructor(request, source) {
this.request = request;
this.source = source;
this.readyState = RequestController.PENDING;
this.handled = new _open_draft_deferred_promise.DeferredPromise();
}
get #handled() {
return this.handled;
}
/**
* Perform this request as-is.
*/
async passthrough() {
outvariant.invariant.as(InterceptorError, this.readyState === RequestController.PENDING, "Failed to passthrough the \"%s %s\" request: the request has already been handled", this.request.method, this.request.url);
this.readyState = RequestController.PASSTHROUGH;
await this.source.passthrough();
this.#handled.resolve();
}
/**
* Respond to this request with the given `Response` instance.
*
* @example
* controller.respondWith(new Response())
* controller.respondWith(Response.json({ id }))
* controller.respondWith(Response.error())
*/
respondWith(response) {
outvariant.invariant.as(InterceptorError, this.readyState === RequestController.PENDING, "Failed to respond to the \"%s %s\" request with \"%d %s\": the request has already been handled (%d)", this.request.method, this.request.url, response.status, response.statusText || "OK", this.readyState);
this.readyState = RequestController.RESPONSE;
this.#handled.resolve();
/**
* @note Although `source.respondWith()` is potentially asynchronous,
* do NOT await it for backward-compatibility. Awaiting it will short-circuit
* the request listener invocation as soon as a listener responds to a request.
* Ideally, that's what we want, but that's not what we promise the user.
*/
this.source.respondWith(response);
}
/**
* Error this request with the given reason.
*
* @example
* controller.errorWith()
* controller.errorWith(new Error('Oops!'))
* controller.errorWith({ message: 'Oops!'})
*/
errorWith(reason) {
outvariant.invariant.as(InterceptorError, this.readyState === RequestController.PENDING, "Failed to error the \"%s %s\" request with \"%s\": the request has already been handled (%d)", this.request.method, this.request.url, reason?.toString(), this.readyState);
this.readyState = RequestController.ERROR;
this.source.errorWith(reason);
this.#handled.resolve();
}
};
//#endregion
//#region src/utils/canParseUrl.ts
/**
* Returns a boolean indicating whether the given URL string
* can be parsed into a `URL` instance.
* A substitute for `URL.canParse()` for Node.js 18.
*/
function canParseUrl(url) {
try {
new URL(url);
return true;
} catch (_error) {
return false;
}
}
//#endregion
//#region src/utils/getValueBySymbol.ts
/**
* Returns the value behind the symbol with the given name.
*/
function getValueBySymbol(symbolName, source) {
const symbol = Object.getOwnPropertySymbols(source).find((symbol$1) => {
return symbol$1.description === symbolName;
});
if (symbol) return Reflect.get(source, symbol);
}
//#endregion
//#region src/utils/fetchUtils.ts
var FetchRequest = class FetchRequest extends Request {
static #resolveProperty(input, init = {}, key) {
return init[key] ?? (input instanceof Request ? input[key] : void 0);
}
/**
* Check if the given request method is configurable.
* @see https://fetch.spec.whatwg.org/#methods
*/
static isConfigurableMethod(method) {
return method !== "CONNECT" && method !== "TRACE" && method !== "TRACK";
}
static isMethodWithBody(method) {
return method !== "HEAD" && method !== "GET" && FetchRequest.isConfigurableMethod(method);
}
/**
* Check if the given request `mode` is configurable.
* @see https://fetch.spec.whatwg.org/#concept-request-mode
*/
static isConfigurableMode(mode) {
return mode !== "navigate" && mode !== "websocket" && mode !== "webtransport";
}
constructor(input, init) {
const method = FetchRequest.#resolveProperty(input, init, "method") || "GET";
const safeMethod = FetchRequest.isConfigurableMethod(method) ? method : "GET";
const hasExplicitBody = init != null && "body" in init;
/**
* Only include `body` in the super init when it needs to be overridden.
* When `input` is a Request and no explicit body is in `init`, let the
* Request constructor handle body transfer naturally so it properly
* marks the original request's body as consumed (bodyUsed = true).
*/
const bodyInit = !FetchRequest.isMethodWithBody(method) ? { body: void 0 } : hasExplicitBody ? { body: init.body } : {};
const mode = FetchRequest.#resolveProperty(input, init, "mode") ?? void 0;
const safeMode = FetchRequest.isConfigurableMode(mode) ? mode : void 0;
super(input, {
...init || {},
method: safeMethod,
mode: safeMode,
duplex: init?.duplex ?? (FetchRequest.isMethodWithBody(method) ? "half" : void 0),
...bodyInit
});
if (method !== safeMethod) this.#setInternalProperty("method", method);
if (method === "CONNECT") {
const url = new URL(input instanceof Request ? input.url : input);
let authority;
/**
* @note Node.js has a bug parsing raw CONNECT requests URLs like
* "http://127.0.0.1:1337/localhost:80". It would treat "localhost:" as a protocol.
*/
if (url.protocol === "localhost:") authority = url.href;
else authority = url.pathname.replace(/^\/+/, "");
/**
* @note Define "url" as a getter because Undici uses their own
* logic to resolve the "request.url" property. Simply reassigning
* its value doesn't do anything. This is a destructive action
* but it's safe because "CONNECT" requests are forbidden per fetch.
*/
Object.defineProperty(this, "url", {
get: () => authority,
enumerable: true,
configurable: true
});
}
if (mode != null && mode !== safeMode) this.#setInternalProperty("mode", mode);
}
#setInternalProperty(key, value) {
const internalState = getValueBySymbol("state", this);
if (internalState) Reflect.set(internalState, key, value);
else Object.defineProperty(this, key, {
value,
enumerable: true,
configurable: true,
writable: false
});
}
};
const kStatus = Symbol("kStatus");
const kUrl = Symbol("kUrl");
var FetchResponse = class FetchResponse extends Response {
static {
this.STATUS_CODES_WITHOUT_BODY = [
101,
103,
204,
205,
304
];
}
static {
this.STATUS_CODES_WITH_REDIRECT = [
301,
302,
303,
307,
308
];
}
static isConfigurableStatusCode(status) {
return status >= 200 && status <= 599;
}
static isRedirectResponse(status) {
return FetchResponse.STATUS_CODES_WITH_REDIRECT.includes(status);
}
/**
* Returns a boolean indicating whether the given response status
* code represents a response that can have a body.
*/
static isResponseWithBody(status) {
return !FetchResponse.STATUS_CODES_WITHOUT_BODY.includes(status);
}
static setStatus(status, response) {
/**
* @note Undici keeps an internal "Symbol(state)" that holds
* the actual value of response status. Update that in Node.js.
*/
const internalState = getValueBySymbol("state", response);
if (internalState) internalState.status = status;
else Object.defineProperty(response, "status", {
value: status,
enumerable: true,
configurable: true,
writable: false
});
Object.defineProperty(response, kStatus, {
value: status,
enumerable: false
});
}
static setUrl(url, response) {
if (!url || url === "about:" || !canParseUrl(url)) return;
const state = getValueBySymbol("state", response);
if (state) state.urlList.push(new URL(url));
else Object.defineProperty(response, "url", {
value: url,
enumerable: true,
configurable: true,
writable: false
});
Object.defineProperty(response, kUrl, {
value: url,
enumerable: false
});
}
/**
* Parses the given raw HTTP headers into a Fetch API `Headers` instance.
*/
static parseRawHeaders(rawHeaders) {
const headers = new Headers();
for (let line = 0; line < rawHeaders.length; line += 2) headers.append(rawHeaders[line], rawHeaders[line + 1]);
return headers;
}
/**
* Safely clones the given `Response`.
* Coerces response clone exceptions into 500 mocked responses.
* Handy in the environments that introduce arbitrary response
* cloning restrictions, like "101 Switching Protocols" cloning
* in "miniflare".
*/
static clone(response) {
try {
return response.clone();
} catch (error) {
return Response.json(error instanceof Error ? {
name: error.name,
message: error.message,
stack: error.stack
} : {}, {
status: 500,
statusText: "Unclonable Response"
});
}
}
constructor(body, init = {}) {
const status = init.status ?? 200;
const safeStatus = FetchResponse.isConfigurableStatusCode(status) ? status : 200;
const finalBody = FetchResponse.isResponseWithBody(status) ? body : null;
super(finalBody, {
status: safeStatus,
statusText: init.statusText,
headers: init.headers
});
/**
* Since Node.js v24, Undici stores the Response state in an inaccessible field "#state".
* Forward the modified status/URL to the cloned response manually.
* @see https://github.com/nodejs/undici/blob/f734c87280e626c75f59aad55b65eb6a89cef392/lib/web/fetch/response.js#L242
*/
if (status !== safeStatus) FetchResponse.setStatus(status, this);
FetchResponse.setUrl(init.url, this);
}
clone() {
const clonedResponse = super.clone();
const customStatus = Reflect.get(this, kStatus);
if (customStatus) FetchResponse.setStatus(customStatus, clonedResponse);
const customUrl = Reflect.get(this, kUrl);
if (customUrl) FetchResponse.setUrl(customUrl, clonedResponse);
return clonedResponse;
}
};
//#endregion
//#region src/getRawRequest.ts
const kRawRequest = Symbol("kRawRequest");
/**
* Returns a raw request instance associated with this request.
*
* @example
* interceptor.on('request', ({ request }) => {
* const rawRequest = getRawRequest(request)
*
* if (rawRequest instanceof http.ClientRequest) {
* console.log(rawRequest.rawHeaders)
* }
* })
*/
function getRawRequest(request) {
return Reflect.get(request, kRawRequest);
}
function setRawRequest(request, rawRequest) {
Reflect.set(request, kRawRequest, rawRequest);
}
//#endregion
Object.defineProperty(exports, 'FetchRequest', {
enumerable: true,
get: function () {
return FetchRequest;
}
});
Object.defineProperty(exports, 'FetchResponse', {
enumerable: true,
get: function () {
return FetchResponse;
}
});
Object.defineProperty(exports, 'InterceptorError', {
enumerable: true,
get: function () {
return InterceptorError;
}
});
Object.defineProperty(exports, 'RequestController', {
enumerable: true,
get: function () {
return RequestController;
}
});
Object.defineProperty(exports, 'canParseUrl', {
enumerable: true,
get: function () {
return canParseUrl;
}
});
Object.defineProperty(exports, 'getRawRequest', {
enumerable: true,
get: function () {
return getRawRequest;
}
});
Object.defineProperty(exports, 'setRawRequest', {
enumerable: true,
get: function () {
return setRawRequest;
}
});
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