powercoder23
diff --git a/‎__tests__/Record.ts
Lines changed: 15 additions & 4 deletions b/‎__tests__/Record.ts
Lines changed: 15 additions & 4 deletions
diff --git a/‎dist/immutable.js
Lines changed: 3 additions & 0 deletions b/‎dist/immutable.js
Lines changed: 3 additions & 0 deletions
diff --git a/‎dist/immutable.min.js
Lines changed: 3 additions & 4 deletions b/‎dist/immutable.min.js
Lines changed: 3 additions & 4 deletions
diff --git a/‎src/Record.js
Lines changed: 3 additions & 0 deletions b/‎src/Record.js
Lines changed: 3 additions & 0 deletions
@@ -15,11 +15,11 @@ describe('Record', () => {
     var t2 = t1.set('a', 10);
     var t3 = t2.clear();
 
-    expect(t1 instanceof Record);
-    expect(t1 instanceof MyType);
+    expect(t1 instanceof Record).toBe(true);
+    expect(t1 instanceof MyType).toBe(true);
 
-    expect(t3 instanceof Record);
-    expect(t3 instanceof MyType);
+    expect(t3 instanceof Record).toBe(true);
+    expect(t3 instanceof MyType).toBe(true);
 
     expect(t1.get('a')).toBe(1);
     expect(t2.get('a')).toBe(10);
@@ -28,6 +28,17 @@ describe('Record', () => {
     expect(t2.size).toBe(3);
   })
 
+  it('passes through records of the same type', () => {
+    var P2 = Record({ x: 0, y: 0 });
+    var P3 = Record({ x: 0, y: 0, z: 0 });
+    var p2 = P2();
+    var p3 = P3();
+    expect(P3(p2) instanceof P3).toBe(true);
+    expect(P2(p3) instanceof P2).toBe(true);
+    expect(P2(p2)).toBe(p2);
+    expect(P3(p3)).toBe(p3);
+  })
+
   it('only allows setting what it knows about', () => {
     var MyType = Record({a:1, b:2, c:3});
 
 
@@ -3745,6 +3745,9 @@
       var hasInitialized;
 
       var RecordType = function Record(values) {
+        if (values instanceof RecordType) {
+          return values;
+        }
         if (!(this instanceof RecordType)) {
           return new RecordType(values);
         }
 
@@ -21,6 +21,9 @@ export class Record extends KeyedCollection {
     var hasInitialized;
 
     var RecordType = function Record(values) {
+      if (values instanceof RecordType) {
+        return values;
+      }
       if (!(this instanceof RecordType)) {
         return new RecordType(values);
       }
Original file line number	Diff line number	Diff line change
`@@ -3745,6 +3745,9 @@`
`3745`	`3745`	`var hasInitialized;`
`3746`	`3746`
`3747`	`3747`	`var RecordType = function Record(values) {`
	`3748`	`+ if (values instanceof RecordType) {`
	`3749`	`+ return values;`
	`3750`	`+ }`
`3748`	`3751`	`if (!(this instanceof RecordType)) {`
`3749`	`3752`	`return new RecordType(values);`
`3750`	`3753`	`}`
Original file line number	Diff line number	Diff line change
`@@ -21,6 +21,9 @@ export class Record extends KeyedCollection {`
`21`	`21`	`var hasInitialized;`
`22`	`22`
`23`	`23`	`var RecordType = function Record(values) {`
	`24`	`+ if (values instanceof RecordType) {`
	`25`	`+ return values;`
	`26`	`+ }`
`24`	`27`	`if (!(this instanceof RecordType)) {`
`25`	`28`	`return new RecordType(values);`
`26`	`29`	`}`