throw proper error instead of json parse error (#441)

* throw propper error instead of json parse error

* test for proper promise rejection

* remove .only

---------

Co-authored-by: Irfan Hodzic <[email protected]@Irfans-MacBook-Pro.local>

Author: ihlokalise

src/http_client/base.ts

@@ -65,10 +65,18 @@ export class ApiRequest {
     try {
       const response = await fetch(target, options);
       let responseJSON;
-      if (response.status === 204) {
-        responseJSON = null;
-      } else {
-        responseJSON = await response.json();
+
+      try {
+        if (response.status === 204) {
+          responseJSON = null;
+        } else {
+          responseJSON = await response.json();
+        }
+      } catch (error) {
+        return Promise.reject({
+          message: response.statusText,
+          code: response.status,
+        });
       }
 
       if (response.ok) {

test/lokalise/lokalise_api.spec.ts

@@ -1,4 +1,5 @@
 import { LokaliseApi, expect, it, describe, Stub } from "../setup.js";
+import { MockAgent, setGlobalDispatcher } from "undici";
 
 const project_id = "803826145ba90b42d5d860.46800099";
 
@@ -16,6 +17,27 @@ describe("LokaliseApi", function () {
     expect(client.clientData.enableCompression).to.be.false;
     expect(client.clientData.version).to.eq("api2");
   });
+
+  it("is expected to reject with proper http message and status code if json is not parsable", async function () {
+    const mockAgent = new MockAgent();
+    setGlobalDispatcher(mockAgent);
+    const mockPool = mockAgent.get("https://api.lokalise.com");
+
+    mockPool
+      .intercept({
+        path: "/api2/projects/" + project_id,
+        method: "GET",
+      })
+      .reply(429, <string>"Too many requests");
+
+    const client = new LokaliseApi({ apiKey: process.env.API_KEY });
+
+    try {
+      expect(await client.projects().get(project_id)).to.throw();
+    } catch (error) {
+      expect(error).to.deep.equal({ message: "Too Many Requests", code: 429 });
+    }
+  });
 });
 
 describe("LokaliseApi host", function () {