diff --git a/tests/baselines/reference/tsxUnionSpread.js b/tests/baselines/reference/tsxUnionSpread.js
new file mode 100644
index 0000000000..f84e6ab216
--- /dev/null
+++ b/tests/baselines/reference/tsxUnionSpread.js
@@ -0,0 +1,38 @@
+//// [index.tsx]
+namespace JSX {
+    export interface Element {}
+}
+
+export type CatInfo = { type: 'Cat'; subType: string; };
+export type DogInfo = { type: 'Dog'; };
+export type AnimalInfo = CatInfo | DogInfo;
+
+function AnimalComponent(info: AnimalInfo): JSX.Element {
+    return undefined as any;
+}
+
+function getProps(): AnimalInfo {
+    // this may be from server or whatever ...
+    return { type: 'Cat', subType: 'Large' };
+}
+
+var props:AnimalInfo = getProps();
+var component = <AnimalComponent {...props} />
+
+var props2:AnimalInfo = { type: 'Cat', subType: 'Large' };
+var component2 = <AnimalComponent {...props2} />
+
+//// [index.jsx]
+"use strict";
+exports.__esModule = true;
+function AnimalComponent(info) {
+    return undefined;
+}
+function getProps() {
+    // this may be from server or whatever ...
+    return { type: 'Cat', subType: 'Large' };
+}
+var props = getProps();
+var component = <AnimalComponent {...props}/>;
+var props2 = { type: 'Cat', subType: 'Large' };
+var component2 = <AnimalComponent {...props2}/>;
diff --git a/tests/baselines/reference/tsxUnionSpread.symbols b/tests/baselines/reference/tsxUnionSpread.symbols
new file mode 100644
index 0000000000..fa838773a8
--- /dev/null
+++ b/tests/baselines/reference/tsxUnionSpread.symbols
@@ -0,0 +1,64 @@
+=== tests/cases/compiler/index.tsx ===
+namespace JSX {
+>JSX : Symbol(JSX, Decl(index.tsx, 0, 0))
+
+    export interface Element {}
+>Element : Symbol(Element, Decl(index.tsx, 0, 15))
+}
+
+export type CatInfo = { type: 'Cat'; subType: string; };
+>CatInfo : Symbol(CatInfo, Decl(index.tsx, 2, 1))
+>type : Symbol(type, Decl(index.tsx, 4, 23))
+>subType : Symbol(subType, Decl(index.tsx, 4, 36))
+
+export type DogInfo = { type: 'Dog'; };
+>DogInfo : Symbol(DogInfo, Decl(index.tsx, 4, 56))
+>type : Symbol(type, Decl(index.tsx, 5, 23))
+
+export type AnimalInfo = CatInfo | DogInfo;
+>AnimalInfo : Symbol(AnimalInfo, Decl(index.tsx, 5, 39))
+>CatInfo : Symbol(CatInfo, Decl(index.tsx, 2, 1))
+>DogInfo : Symbol(DogInfo, Decl(index.tsx, 4, 56))
+
+function AnimalComponent(info: AnimalInfo): JSX.Element {
+>AnimalComponent : Symbol(AnimalComponent, Decl(index.tsx, 6, 43))
+>info : Symbol(info, Decl(index.tsx, 8, 25))
+>AnimalInfo : Symbol(AnimalInfo, Decl(index.tsx, 5, 39))
+>JSX : Symbol(JSX, Decl(index.tsx, 0, 0))
+>Element : Symbol(JSX.Element, Decl(index.tsx, 0, 15))
+
+    return undefined as any;
+>undefined : Symbol(undefined)
+}
+
+function getProps(): AnimalInfo {
+>getProps : Symbol(getProps, Decl(index.tsx, 10, 1))
+>AnimalInfo : Symbol(AnimalInfo, Decl(index.tsx, 5, 39))
+
+    // this may be from server or whatever ...
+    return { type: 'Cat', subType: 'Large' };
+>type : Symbol(type, Decl(index.tsx, 14, 12))
+>subType : Symbol(subType, Decl(index.tsx, 14, 25))
+}
+
+var props:AnimalInfo = getProps();
+>props : Symbol(props, Decl(index.tsx, 17, 3))
+>AnimalInfo : Symbol(AnimalInfo, Decl(index.tsx, 5, 39))
+>getProps : Symbol(getProps, Decl(index.tsx, 10, 1))
+
+var component = <AnimalComponent {...props} />
+>component : Symbol(component, Decl(index.tsx, 18, 3))
+>AnimalComponent : Symbol(AnimalComponent, Decl(index.tsx, 6, 43))
+>props : Symbol(props, Decl(index.tsx, 17, 3))
+
+var props2:AnimalInfo = { type: 'Cat', subType: 'Large' };
+>props2 : Symbol(props2, Decl(index.tsx, 20, 3))
+>AnimalInfo : Symbol(AnimalInfo, Decl(index.tsx, 5, 39))
+>type : Symbol(type, Decl(index.tsx, 20, 25))
+>subType : Symbol(subType, Decl(index.tsx, 20, 38))
+
+var component2 = <AnimalComponent {...props2} />
+>component2 : Symbol(component2, Decl(index.tsx, 21, 3))
+>AnimalComponent : Symbol(AnimalComponent, Decl(index.tsx, 6, 43))
+>props2 : Symbol(props2, Decl(index.tsx, 20, 3))
+
diff --git a/tests/baselines/reference/tsxUnionSpread.types b/tests/baselines/reference/tsxUnionSpread.types
new file mode 100644
index 0000000000..11e6308fe1
--- /dev/null
+++ b/tests/baselines/reference/tsxUnionSpread.types
@@ -0,0 +1,74 @@
+=== tests/cases/compiler/index.tsx ===
+namespace JSX {
+>JSX : any
+
+    export interface Element {}
+>Element : Element
+}
+
+export type CatInfo = { type: 'Cat'; subType: string; };
+>CatInfo : CatInfo
+>type : "Cat"
+>subType : string
+
+export type DogInfo = { type: 'Dog'; };
+>DogInfo : DogInfo
+>type : "Dog"
+
+export type AnimalInfo = CatInfo | DogInfo;
+>AnimalInfo : AnimalInfo
+>CatInfo : CatInfo
+>DogInfo : DogInfo
+
+function AnimalComponent(info: AnimalInfo): JSX.Element {
+>AnimalComponent : (info: AnimalInfo) => JSX.Element
+>info : AnimalInfo
+>AnimalInfo : AnimalInfo
+>JSX : any
+>Element : JSX.Element
+
+    return undefined as any;
+>undefined as any : any
+>undefined : undefined
+}
+
+function getProps(): AnimalInfo {
+>getProps : () => AnimalInfo
+>AnimalInfo : AnimalInfo
+
+    // this may be from server or whatever ...
+    return { type: 'Cat', subType: 'Large' };
+>{ type: 'Cat', subType: 'Large' } : { type: "Cat"; subType: string; }
+>type : string
+>'Cat' : "Cat"
+>subType : string
+>'Large' : "Large"
+}
+
+var props:AnimalInfo = getProps();
+>props : AnimalInfo
+>AnimalInfo : AnimalInfo
+>getProps() : AnimalInfo
+>getProps : () => AnimalInfo
+
+var component = <AnimalComponent {...props} />
+>component : any
+><AnimalComponent {...props} /> : any
+>AnimalComponent : (info: AnimalInfo) => JSX.Element
+>props : AnimalInfo
+
+var props2:AnimalInfo = { type: 'Cat', subType: 'Large' };
+>props2 : AnimalInfo
+>AnimalInfo : AnimalInfo
+>{ type: 'Cat', subType: 'Large' } : { type: "Cat"; subType: string; }
+>type : string
+>'Cat' : "Cat"
+>subType : string
+>'Large' : "Large"
+
+var component2 = <AnimalComponent {...props2} />
+>component2 : any
+><AnimalComponent {...props2} /> : any
+>AnimalComponent : (info: AnimalInfo) => JSX.Element
+>props2 : CatInfo
+
diff --git a/tests/cases/compiler/tsxUnionSpread.tsx b/tests/cases/compiler/tsxUnionSpread.tsx
new file mode 100644
index 0000000000..daa663db87
--- /dev/null
+++ b/tests/cases/compiler/tsxUnionSpread.tsx
@@ -0,0 +1,24 @@
+// @jsx: preserve
+// @filename: index.tsx
+namespace JSX {
+    export interface Element {}
+}
+
+export type CatInfo = { type: 'Cat'; subType: string; };
+export type DogInfo = { type: 'Dog'; };
+export type AnimalInfo = CatInfo | DogInfo;
+
+function AnimalComponent(info: AnimalInfo): JSX.Element {
+    return undefined as any;
+}
+
+function getProps(): AnimalInfo {
+    // this may be from server or whatever ...
+    return { type: 'Cat', subType: 'Large' };
+}
+
+var props:AnimalInfo = getProps();
+var component = <AnimalComponent {...props} />
+
+var props2:AnimalInfo = { type: 'Cat', subType: 'Large' };
+var component2 = <AnimalComponent {...props2} />
\ No newline at end of file