Fix support for non-JSON fetch responses (#153)

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

Author: adamkiss

index.js

@@ -137,9 +137,18 @@ alfy.fetch = async (url, options) => {
 		return cachedResponse;
 	}
 
+	if ('json' in options && options.json === false) {
+		delete options.json;
+		options.responseType = 'text';
+	} else {
+		options.responseType = 'json';
+	}
+
+	options.resolveBodyOnly = true;
+
 	let response;
 	try {
-		response = await got(url, options).json();
+		response = await got(url, options);
 	} catch (error) {
 		if (cachedResponse) {
 			return cachedResponse;

test/fetch.js

@@ -13,6 +13,7 @@ test.before(() => {
 	nock(URL).get('/cache-key?unicorn=rainbow').reply(200, {unicorn: 'rainbow'});
 	nock(URL).get('/cache-version').once().reply(200, {foo: 'bar'});
 	nock(URL).get('/cache-version').twice().reply(200, {unicorn: 'rainbow'});
+	nock(URL).get('/string-response').once().reply(200, 'unicorn is rainbow');
 });
 
 test('no cache', async t => {
@@ -74,3 +75,8 @@ test('invalid version', async t => {
 	// t.deepEqual(await alfy3.fetch(`${URL}/cache-version`, {maxAge: 5000}), {unicorn: 'rainbow'});
 	// t.deepEqual(alfy.cache.store['https://foo.bar/cache-version{"maxAge":5000}'].data, {unicorn: 'rainbow'});
 });
+
+test('non-JSON response', async t => {
+	const alfy = createAlfy();
+	t.is(await alfy.fetch(`${URL}/string-response`, {json: false}), 'unicorn is rainbow');
+});