fix: need to encode ref before setting it (#82)

* fix: need to encode ref before setting it

* fix: linting

Author: pytlesk4

src/__tests__/decycle.spec.ts

@@ -74,4 +74,32 @@ describe('decycle', () => {
       },
     });
   });
+
+  it('should properly encode pointers when decycling a json object', () => {
+    const obj2 = {
+      circle: {},
+    };
+    obj2.circle = obj2;
+
+    const obj = {
+      paths: {
+        '/circle': {
+          obj2: {},
+        },
+      },
+    };
+    obj.paths['/circle'].obj2 = obj2;
+
+    expect(decycle(obj)).toEqual({
+      paths: {
+        '/circle': {
+          obj2: {
+            circle: {
+              $ref: '#/paths/~1circle/obj2',
+            },
+          },
+        },
+      },
+    });
+  });
 });

src/decycle.ts

@@ -1,4 +1,5 @@
 import { isPlainObject } from './_utils';
+import { encodePointer } from './encodePointer';
 
 export const decycle = (obj: unknown, replacer?: (value: any) => any) => {
   const objs = new WeakMap<object, string>();
@@ -14,7 +15,7 @@ export const decycle = (obj: unknown, replacer?: (value: any) => any) => {
       const oldPath = objs.get(value);
       // If the value is an object or array, look to see if we have already
       // encountered it. If so, return a {"$ref":PATH} object.
-      if (oldPath) return { $ref: oldPath };
+      if (oldPath) return { $ref: encodePointer(oldPath) };
 
       objs.set(value, path);
       // If it is an array, replicate the array.