fix: allow empty strings in feed source

Author: digitalsadhu

lib/feed-schema.js

@@ -14,6 +14,7 @@ module.exports = Joi.object()
             .label('file'),
         source: Joi.string()
             .required()
+            .allow('')
             .label('source'),
         deps: Joi.object()
             .required()

test/reader.test.js

@@ -229,6 +229,23 @@ test('should not error if any feed contains extra content keys', async () => {
     ).resolves.toBeDefined();
 });
 
+test('should not error if feed source is an empty string', async () => {
+    await expect(
+        bundleJS([
+            [
+                {
+                    file: 'asd',
+                    deps: {},
+                    id: 'a',
+                    entry: true,
+                    source: '',
+                    somethingWeird: true,
+                },
+            ],
+        ])
+    ).resolves.toBeDefined();
+});
+
 test('should error if feed content does not contain at least 1 entrypoint', async () => {
     await expect(
         bundleJS([