fix: axios error transformation on network errors

CHANGELOG.md

@@ -13,6 +13,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added a warning if the SDK can't save to cookies to help people notice/debug these issues faster.
 
+### Fixes
+
+- Fixed an issue in the Axios interceptor that caused it to throw when encountering a network error
+
 ## [20.1.0] - 2024-05-31
 
 ### Changes

lib/ts/axios.ts

@@ -262,7 +262,7 @@ export function responseErrorInterceptor(axiosInstance: any) {
             "responseErrorInterceptor: already intercepted: " +
                 (error.response && error.response.headers["x-supertokens-xhr-intercepted"])
         );
-        if (error.response.headers["x-supertokens-xhr-intercepted"]) {
+        if (error.response === undefined || error.response.headers["x-supertokens-xhr-intercepted"]) {
             throw error;
         }
         if (
@@ -489,6 +489,7 @@ export default class AuthHttpRequest {
                             logDebugMessage(
                                 "doRequest: sessionRefreshAttempts: " + config.__supertokensSessionRefreshAttempts
                             );
+                            console.log("!!!!", JSON.stringify(refreshResult));
 
                             if (refreshResult.result !== "RETRY") {
                                 logDebugMessage("doRequest: Not retrying original request");

lib/ts/axiosError.ts

@@ -48,40 +48,45 @@ function enhanceAxiosError(
     return error;
 }
 
-export async function createAxiosErrorFromFetchResp(response: Response): Promise<AxiosError> {
+export async function createAxiosErrorFromFetchResp(responseOrError: Response): Promise<AxiosError> {
     const config = {
-        url: response.url,
-        headers: response.headers
+        url: responseOrError.url,
+        headers: responseOrError.headers
     };
-    const contentType = response.headers.get("content-type");
 
-    let data;
-    if (contentType === null) {
-        try {
-            data = await response.text();
-        } catch {
-            data = "";
+    const isResponse = "status" in responseOrError;
+    let axiosResponse;
+    if (isResponse) {
+        const contentType = responseOrError.headers.get("content-type");
+
+        let data;
+        if (contentType === null) {
+            try {
+                data = await responseOrError.text();
+            } catch {
+                data = "";
+            }
+        } else if (contentType.includes("application/json")) {
+            data = await responseOrError.json();
+        } else if (contentType.includes("text/")) {
+            data = await responseOrError.text();
+        } else {
+            data = await responseOrError.blob();
         }
-    } else if (contentType.includes("application/json")) {
-        data = await response.json();
-    } else if (contentType.includes("text/")) {
-        data = await response.text();
-    } else {
-        data = await response.blob();
-    }
 
-    const axiosResponse = {
-        data,
-        status: response.status,
-        statusText: response.statusText,
-        headers: response.headers,
-        config: config,
-        request: undefined
-    };
+        axiosResponse = {
+            data,
+            status: responseOrError.status,
+            statusText: responseOrError.statusText,
+            headers: responseOrError.headers,
+            config: config,
+            request: undefined
+        };
+    }
     return enhanceAxiosError(
-        new Error("Request failed with status code " + response.status),
+        isResponse ? new Error("Request failed with status code " + responseOrError.status) : responseOrError,
         config as any,
-        undefined,
+        (responseOrError as any).code,
         undefined,
         axiosResponse as any
     );

test/axios2.test.js

@@ -49,10 +49,13 @@ describe("Axios AuthHttpRequest class tests", function () {
     });
 
     before(async function () {
-        spawn("./test/startServer", [
-            process.env.INSTALL_PATH,
-            process.env.NODE_PORT === undefined ? 8080 : process.env.NODE_PORT
-        ]);
+        spawn(
+            "./test/startServer",
+            [process.env.INSTALL_PATH, process.env.NODE_PORT === undefined ? 8080 : process.env.NODE_PORT]
+            // {
+            //     stdio: "inherit"
+            // }
+        );
         await new Promise(r => setTimeout(r, 1000));
     });
 
@@ -685,4 +688,83 @@ describe("Axios AuthHttpRequest class tests", function () {
             await browser.close();
         }
     });
+
+    it("should throw error if refresh fails with a network error", async function () {
+        await startST(3);
+        const browser = await puppeteer.launch({
+            args: ["--no-sandbox", "--disable-setuid-sandbox"]
+        });
+
+        try {
+            const page = await browser.newPage();
+            await page.goto(BASE_URL + "/index.html", { waitUntil: "load" });
+            await page.addScriptTag({ path: `./bundle/bundle.js`, type: "text/javascript" });
+            // const logs = [];
+            // page.on("console", ev => {
+            //     const logText = ev.text();
+            //     // console.log(logText);
+            //     if (logText.startsWith("com.supertokens")) {
+            //         logs.push(logText);
+            //     }
+            // });
+
+            await page.evaluate(async BASE_URL => {
+                const axiosInstance = axios.create({
+                    withCredentials: true
+                });
+                const origFetch = window.fetch;
+                window.fetch = async (...input) => {
+                    try {
+                        if (input[0].endsWith("/auth/session/refresh")) {
+                            input[0] = "http://localhost:1234/nope";
+                        }
+                        return await origFetch(...input);
+                    } catch (err) {
+                        throw err;
+                    }
+                };
+                supertokens.init({
+                    apiDomain: BASE_URL,
+                    tokenTransferMethod: "cookie",
+                    // enableDebugLogs: true,
+                    override: {
+                        functions: oI => ({
+                            ...oI,
+                            addXMLHttpRequestInterceptor: () => {}
+                        })
+                    }
+                });
+                supertokens.addAxiosInterceptors(axiosInstance);
+
+                let userId = "testing-supertokens-react-native";
+
+                let loginResponse = await axiosInstance.post(`${BASE_URL}/login`, JSON.stringify({ userId }), {
+                    headers: {
+                        Accept: "application/json",
+                        "Content-Type": "application/json"
+                    }
+                });
+                let userIdFromResponse = loginResponse.data;
+                assertEqual(userId, userIdFromResponse);
+
+                //check that the number of times the refreshAPI was called is 0
+                assert((await getNumberOfTimesRefreshCalled()) === 0);
+
+                try {
+                    await axiosInstance("http://localhost:1234/asdf");
+                    await axiosInstance({
+                        url: `${BASE_URL}/`,
+                        method: "GET",
+                        headers: { "Cache-Control": "no-cache, private" }
+                    });
+                } catch (err) {
+                    assert(err.isAxiosError);
+                    assert.strictEqual(err.code, "ERR_NETWORK");
+                    assert.strictEqual(err.response, undefined);
+                }
+            }, BASE_URL);
+        } finally {
+            await browser.close();
+        }
+    });
 });