diff --git a/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.errors.txt b/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.errors.txt
new file mode 100644
index 00000000000..36594870861
--- /dev/null
+++ b/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.errors.txt
@@ -0,0 +1,15 @@
+tests/cases/compiler/a.js(2,7): error TS2339: Property 'prototype' does not exist on type 'typeof Thing'.
+tests/cases/compiler/a.js(3,5): error TS2351: This expression is not constructable.
+  Type 'typeof Thing' has no construct signatures.
+
+
+==== tests/cases/compiler/a.js (2 errors) ====
+    Thing.abc = 123
+    Thing.prototype.def = 456
+          ~~~~~~~~~
+!!! error TS2339: Property 'prototype' does not exist on type 'typeof Thing'.
+    new Thing();
+        ~~~~~
+!!! error TS2351: This expression is not constructable.
+!!! error TS2351:   Type 'typeof Thing' has no construct signatures.
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.symbols b/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.symbols
new file mode 100644
index 00000000000..24c2f027153
--- /dev/null
+++ b/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.symbols
@@ -0,0 +1,14 @@
+=== tests/cases/compiler/a.js ===
+Thing.abc = 123
+>Thing.abc : Symbol(Thing.abc, Decl(a.js, 0, 0))
+>Thing : Symbol(Thing, Decl(a.js, 0, 0))
+>abc : Symbol(Thing.abc, Decl(a.js, 0, 0))
+
+Thing.prototype.def = 456
+>Thing.prototype : Symbol(Thing.def, Decl(a.js, 0, 15))
+>Thing : Symbol(Thing, Decl(a.js, 0, 0))
+>def : Symbol(Thing.def, Decl(a.js, 0, 15))
+
+new Thing();
+>Thing : Symbol(Thing, Decl(a.js, 0, 0))
+
diff --git a/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.types b/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.types
new file mode 100644
index 00000000000..f7d86af40f6
--- /dev/null
+++ b/tests/baselines/reference/undefinedEntityWithImmediateAndPrototypeAssignments.types
@@ -0,0 +1,21 @@
+=== tests/cases/compiler/a.js ===
+Thing.abc = 123
+>Thing.abc = 123 : 123
+>Thing.abc : number
+>Thing : typeof Thing
+>abc : number
+>123 : 123
+
+Thing.prototype.def = 456
+>Thing.prototype.def = 456 : 456
+>Thing.prototype.def : any
+>Thing.prototype : any
+>Thing : typeof Thing
+>prototype : any
+>def : any
+>456 : 456
+
+new Thing();
+>new Thing() : any
+>Thing : typeof Thing
+