diff --git a/tests/baselines/reference/promiseType.js b/tests/baselines/reference/promiseType.js
index 84d9d713b4810..dbae76b77ee1f 100644
--- a/tests/baselines/reference/promiseType.js
+++ b/tests/baselines/reference/promiseType.js
@@ -217,6 +217,8 @@ const pc6 = p.then(() => Promise.reject("1"), () => {});
 const pc7 = p.then(() => Promise.reject("1"), () => {throw 1});
 const pc8 = p.then(() => Promise.reject("1"), () => Promise.resolve(1));
 const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
+
+Promise.resolve(undefined as Promise<number> | string);
 
 
 //// [promiseType.js]
@@ -440,3 +442,4 @@ const pc6 = p.then(() => Promise.reject("1"), () => { });
 const pc7 = p.then(() => Promise.reject("1"), () => { throw 1; });
 const pc8 = p.then(() => Promise.reject("1"), () => Promise.resolve(1));
 const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
+Promise.resolve(undefined);
diff --git a/tests/baselines/reference/promiseType.symbols b/tests/baselines/reference/promiseType.symbols
index cec81cd7d8266..461b3b6dc6e67 100644
--- a/tests/baselines/reference/promiseType.symbols
+++ b/tests/baselines/reference/promiseType.symbols
@@ -1089,3 +1089,10 @@ const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
 >Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
 >reject : Symbol(PromiseConstructor.reject, Decl(lib.es2015.promise.d.ts, --, --))
 
+Promise.resolve(undefined as Promise<number> | string);
+>Promise.resolve : Symbol(PromiseConstructor.resolve, Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+>resolve : Symbol(PromiseConstructor.resolve, Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --))
+>undefined : Symbol(undefined)
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+
diff --git a/tests/baselines/reference/promiseType.types b/tests/baselines/reference/promiseType.types
index 347885d24a193..0dc7403906d46 100644
--- a/tests/baselines/reference/promiseType.types
+++ b/tests/baselines/reference/promiseType.types
@@ -1583,3 +1583,11 @@ const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
 >reject : <T = never>(reason?: any) => Promise<T>
 >1 : 1
 
+Promise.resolve(undefined as Promise<number> | string);
+>Promise.resolve(undefined as Promise<number> | string) : Promise<string | number>
+>Promise.resolve : { <T>(value: T): Promise<T extends PromiseLike<infer U> ? U : T>; (): Promise<void>; }
+>Promise : PromiseConstructor
+>resolve : { <T>(value: T): Promise<T extends PromiseLike<infer U> ? U : T>; (): Promise<void>; }
+>undefined as Promise<number> | string : string | Promise<number>
+>undefined : undefined
+
diff --git a/tests/cases/compiler/promiseType.ts b/tests/cases/compiler/promiseType.ts
index ba4a7f6041396..220e7dabeb75c 100644
--- a/tests/cases/compiler/promiseType.ts
+++ b/tests/cases/compiler/promiseType.ts
@@ -217,3 +217,5 @@ const pc6 = p.then(() => Promise.reject("1"), () => {});
 const pc7 = p.then(() => Promise.reject("1"), () => {throw 1});
 const pc8 = p.then(() => Promise.reject("1"), () => Promise.resolve(1));
 const pc9 = p.then(() => Promise.reject("1"), () => Promise.reject(1));
+
+Promise.resolve(undefined as Promise<number> | string);