Reverts back to errors but with detail

src/classes/TumblrAPIError.ts

@@ -0,0 +1,13 @@
+import { TumblrAPIResponse } from "../interfaces";
+
+export class TumblrAPIError extends Error {
+	public response: TumblrAPIResponse;
+	public queryURL: string;
+
+	constructor(message: TumblrAPIResponse, queryURL: string) {
+		super(`${message.meta.status}: ${message.meta.msg}`);
+		this.name = "TumblrAPIError";
+		this.response = message;
+		this.queryURL = queryURL;
+	}
+}

src/classes/index.ts

@@ -0,0 +1 @@
+export * from "./TumblrAPIError";

src/functions/AccessTumblrApi.ts

@@ -1,3 +1,4 @@
+import { TumblrAPIError } from "../classes";
 import { TumblrAPIResponse } from "../interfaces";
 
 /**
@@ -35,5 +36,9 @@ export async function accessTumblrAPI(
 
 	const response: TumblrAPIResponse = await request.json();
 
+	if (!request.ok) {
+		throw new TumblrAPIError(response, url);
+	}
+
 	return response;
 }

src/index.ts

@@ -1,2 +1,3 @@
+export * from "./classes";
 export * from "./functions";
 export * from "./interfaces";

tests/Api.test.ts

@@ -1,10 +1,15 @@
-import { accessTumblrAPI } from "../src";
+import { accessTumblrAPI, TumblrAPIError } from "../src";
 
 const token = process.env.TUMBLR_TOKEN;
 
 if (!token) throw new Error("No token provided");
 
 it("should error on invalid path", async () => {
-	const response = await accessTumblrAPI(token, "invalid/path");
-	expect(response.meta.status).toBe(404);
+	const error = await accessTumblrAPI(token, "invalid/path").catch<Error>(e => e);
+	expect(error instanceof TumblrAPIError).toBe(true);
+	if (error instanceof TumblrAPIError) {
+		expect(error.response.meta.status).toBe(404);
+		expect(error.response.meta.msg).toBe("Not Found");
+		expect(error.queryURL).toBe("https://api.tumblr.com/v2/invalid/path?");
+	}
 });