Fix error handling when UTF8 decoding fails (#2336)

Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>

source/as-promise/index.ts

@@ -7,7 +7,7 @@ import {
 	type RequestError,
 } from '../core/errors.js';
 import Request from '../core/index.js';
-import {parseBody, isResponseOk, type Response} from '../core/response.js';
+import {parseBody, isResponseOk, type Response, ParseError} from '../core/response.js';
 import proxyEvents from '../core/utils/proxy-events.js';
 import type Options from '../core/options.js';
 import {CancelError, type CancelableRequest} from './types.js';
@@ -62,7 +62,12 @@ export default function asPromise<T>(firstRequest?: Request): CancelableRequest<
 						response.body = parseBody(response, options.responseType, options.parseJson, options.encoding);
 					} catch (error: any) {
 						// Fall back to `utf8`
-						response.body = response.rawBody.toString();
+						try {
+							response.body = response.rawBody.toString();
+						} catch (error) {
+							request._beforeError(new ParseError(error as Error, response));
+							return;
+						}
 
 						if (isResponseOk(response)) {
 							request._beforeError(error);

test/error.ts

@@ -343,6 +343,23 @@ test('no uncaught parse errors #2', async t => {
 	await close();
 });
 
+test('no uncaught parse errors on fallback to utf8', withServer, async (t, server, got) => {
+	server.get('/', (_request, response) => {
+		const buffer = Buffer.alloc(536_870_912, 'A');
+		response.statusCode = 200;
+		response.end(buffer);
+	});
+
+	await t.throwsAsync(got({
+		timeout: {
+			request: 60_000,
+		},
+	}), {
+		instanceOf: RequestError,
+		code: 'ERR_BODY_PARSE_FAILURE',
+	});
+});
+
 // Fails randomly on Node 10:
 // Blocked by https://github.com/istanbuljs/nyc/issues/619
 // eslint-disable-next-line ava/no-skip-test