diff --git a/tests/baselines/reference/implicitIndexSignatures.js b/tests/baselines/reference/implicitIndexSignatures.js
index 6403f1f1543..a20c63979da 100644
--- a/tests/baselines/reference/implicitIndexSignatures.js
+++ b/tests/baselines/reference/implicitIndexSignatures.js
@@ -44,6 +44,18 @@ function f4() {
     const v3 = getNumberIndexValue(o1);
     const v4 = getNumberIndexValue(o2);
 }
+
+function f5() {
+    enum E1 { A, B }
+    enum E2 { A = "A", B = "B" }
+    enum E3 { A = 0, B = "B" }
+    const v1 = getStringIndexValue(E1);
+    const v2 = getStringIndexValue(E2);
+    const v3 = getStringIndexValue(E3);
+    const v4 = getNumberIndexValue(E1);
+    const v5 = getNumberIndexValue(E2);
+    const v6 = getNumberIndexValue(E3);
+}
 
 
 //// [implicitIndexSignatures.js]
@@ -83,3 +95,26 @@ function f4() {
     var v3 = getNumberIndexValue(o1);
     var v4 = getNumberIndexValue(o2);
 }
+function f5() {
+    var E1;
+    (function (E1) {
+        E1[E1["A"] = 0] = "A";
+        E1[E1["B"] = 1] = "B";
+    })(E1 || (E1 = {}));
+    var E2;
+    (function (E2) {
+        E2["A"] = "A";
+        E2["B"] = "B";
+    })(E2 || (E2 = {}));
+    var E3;
+    (function (E3) {
+        E3[E3["A"] = 0] = "A";
+        E3["B"] = "B";
+    })(E3 || (E3 = {}));
+    var v1 = getStringIndexValue(E1);
+    var v2 = getStringIndexValue(E2);
+    var v3 = getStringIndexValue(E3);
+    var v4 = getNumberIndexValue(E1);
+    var v5 = getNumberIndexValue(E2);
+    var v6 = getNumberIndexValue(E3);
+}
diff --git a/tests/baselines/reference/implicitIndexSignatures.symbols b/tests/baselines/reference/implicitIndexSignatures.symbols
index 1c8f06acc11..6f3e68f5058 100644
--- a/tests/baselines/reference/implicitIndexSignatures.symbols
+++ b/tests/baselines/reference/implicitIndexSignatures.symbols
@@ -168,3 +168,52 @@ function f4() {
 >o2 : Symbol(o2, Decl(implicitIndexSignatures.ts, 39, 7))
 }
 
+function f5() {
+>f5 : Symbol(f5, Decl(implicitIndexSignatures.ts, 44, 1))
+
+    enum E1 { A, B }
+>E1 : Symbol(E1, Decl(implicitIndexSignatures.ts, 46, 15))
+>A : Symbol(E1.A, Decl(implicitIndexSignatures.ts, 47, 13))
+>B : Symbol(E1.B, Decl(implicitIndexSignatures.ts, 47, 16))
+
+    enum E2 { A = "A", B = "B" }
+>E2 : Symbol(E2, Decl(implicitIndexSignatures.ts, 47, 20))
+>A : Symbol(E2.A, Decl(implicitIndexSignatures.ts, 48, 13))
+>B : Symbol(E2.B, Decl(implicitIndexSignatures.ts, 48, 22))
+
+    enum E3 { A = 0, B = "B" }
+>E3 : Symbol(E3, Decl(implicitIndexSignatures.ts, 48, 32))
+>A : Symbol(E3.A, Decl(implicitIndexSignatures.ts, 49, 13))
+>B : Symbol(E3.B, Decl(implicitIndexSignatures.ts, 49, 20))
+
+    const v1 = getStringIndexValue(E1);
+>v1 : Symbol(v1, Decl(implicitIndexSignatures.ts, 50, 9))
+>getStringIndexValue : Symbol(getStringIndexValue, Decl(implicitIndexSignatures.ts, 11, 13))
+>E1 : Symbol(E1, Decl(implicitIndexSignatures.ts, 46, 15))
+
+    const v2 = getStringIndexValue(E2);
+>v2 : Symbol(v2, Decl(implicitIndexSignatures.ts, 51, 9))
+>getStringIndexValue : Symbol(getStringIndexValue, Decl(implicitIndexSignatures.ts, 11, 13))
+>E2 : Symbol(E2, Decl(implicitIndexSignatures.ts, 47, 20))
+
+    const v3 = getStringIndexValue(E3);
+>v3 : Symbol(v3, Decl(implicitIndexSignatures.ts, 52, 9))
+>getStringIndexValue : Symbol(getStringIndexValue, Decl(implicitIndexSignatures.ts, 11, 13))
+>E3 : Symbol(E3, Decl(implicitIndexSignatures.ts, 48, 32))
+
+    const v4 = getNumberIndexValue(E1);
+>v4 : Symbol(v4, Decl(implicitIndexSignatures.ts, 53, 9))
+>getNumberIndexValue : Symbol(getNumberIndexValue, Decl(implicitIndexSignatures.ts, 13, 68))
+>E1 : Symbol(E1, Decl(implicitIndexSignatures.ts, 46, 15))
+
+    const v5 = getNumberIndexValue(E2);
+>v5 : Symbol(v5, Decl(implicitIndexSignatures.ts, 54, 9))
+>getNumberIndexValue : Symbol(getNumberIndexValue, Decl(implicitIndexSignatures.ts, 13, 68))
+>E2 : Symbol(E2, Decl(implicitIndexSignatures.ts, 47, 20))
+
+    const v6 = getNumberIndexValue(E3);
+>v6 : Symbol(v6, Decl(implicitIndexSignatures.ts, 55, 9))
+>getNumberIndexValue : Symbol(getNumberIndexValue, Decl(implicitIndexSignatures.ts, 13, 68))
+>E3 : Symbol(E3, Decl(implicitIndexSignatures.ts, 48, 32))
+}
+
diff --git a/tests/baselines/reference/implicitIndexSignatures.types b/tests/baselines/reference/implicitIndexSignatures.types
index afad7bed570..c302edba32f 100644
--- a/tests/baselines/reference/implicitIndexSignatures.types
+++ b/tests/baselines/reference/implicitIndexSignatures.types
@@ -196,3 +196,62 @@ function f4() {
 >o2 : { 0: string; 1: string; count: number; }
 }
 
+function f5() {
+>f5 : () => void
+
+    enum E1 { A, B }
+>E1 : E1
+>A : E1.A
+>B : E1.B
+
+    enum E2 { A = "A", B = "B" }
+>E2 : E2
+>A : E2.A
+>"A" : "A"
+>B : E2.B
+>"B" : "B"
+
+    enum E3 { A = 0, B = "B" }
+>E3 : E3
+>A : E3.A
+>0 : 0
+>B : E3.B
+>"B" : "B"
+
+    const v1 = getStringIndexValue(E1);
+>v1 : string | E1
+>getStringIndexValue(E1) : string | E1
+>getStringIndexValue : <T>(map: { [x: string]: T; }) => T
+>E1 : typeof E1
+
+    const v2 = getStringIndexValue(E2);
+>v2 : E2
+>getStringIndexValue(E2) : E2
+>getStringIndexValue : <T>(map: { [x: string]: T; }) => T
+>E2 : typeof E2
+
+    const v3 = getStringIndexValue(E3);
+>v3 : string | E3.A
+>getStringIndexValue(E3) : string | E3.A
+>getStringIndexValue : <T>(map: { [x: string]: T; }) => T
+>E3 : typeof E3
+
+    const v4 = getNumberIndexValue(E1);
+>v4 : string
+>getNumberIndexValue(E1) : string
+>getNumberIndexValue : <T>(map: { [x: number]: T; }) => T
+>E1 : typeof E1
+
+    const v5 = getNumberIndexValue(E2);
+>v5 : unknown
+>getNumberIndexValue(E2) : unknown
+>getNumberIndexValue : <T>(map: { [x: number]: T; }) => T
+>E2 : typeof E2
+
+    const v6 = getNumberIndexValue(E3);
+>v6 : string
+>getNumberIndexValue(E3) : string
+>getNumberIndexValue : <T>(map: { [x: number]: T; }) => T
+>E3 : typeof E3
+}
+