fix: resolveInlineRef should handle arrays (#85)

Author: P0lip

src/__tests__/resolveInlineRef.spec.ts

@@ -10,11 +10,13 @@ describe('resolveInlineRef', () => {
         $ref: '#/c',
       },
       c: {
-        $ref: '#/d',
-      },
-      d: {
-        foo: 'woo!',
+        $ref: '#/d/0',
       },
+      d: [
+        {
+          foo: 'woo!',
+        },
+      ],
     };
 
     expect(resolveInlineRef(doc, '#/a')).toEqual('woo!');

src/resolveInlineRef.ts

@@ -12,7 +12,7 @@ function _resolveInlineRef(document: Dictionary<unknown>, ref: string, seen: unk
   const path = pointerToPath(ref);
   let value: unknown = document;
   for (const segment of path) {
-    if (!isPlainObject(value) || !(segment in value)) {
+    if ((!isPlainObject(value) && !Array.isArray(value)) || !(segment in value)) {
       throw new ReferenceError(`Could not resolve '${ref}'`);
     }