Add test with backslash

tests/baselines/reference/tsxReactEmitWhitespace.js

@@ -50,6 +50,13 @@ var p = 0;
 
   </div>;
 
+// Emit "hello\\ world"
+<div>
+
+    hello\
+
+world
+</div>;
 
 
 //// [file.js]
@@ -77,3 +84,5 @@ React.createElement("div", null, "3");
 React.createElement("div", null);
 // Emit "foo bar"
 React.createElement("div", null, "foo bar");
+// Emit "hello\\ world"
+React.createElement("div", null, "hello\\ world");

tests/baselines/reference/tsxReactEmitWhitespace.symbols

@@ -90,4 +90,13 @@ var p = 0;
   </div>;
 >div : Symbol(JSX.IntrinsicElements, Decl(file.tsx, 1, 22))
 
+// Emit "hello\\ world"
+<div>
+>div : Symbol(JSX.IntrinsicElements, Decl(file.tsx, 1, 22))
+
+    hello\
+
+world
+</div>;
+>div : Symbol(JSX.IntrinsicElements, Decl(file.tsx, 1, 22))
 

tests/baselines/reference/tsxReactEmitWhitespace.types

@@ -100,4 +100,14 @@ var p = 0;
   </div>;
 >div : any
 
+// Emit "hello\\ world"
+<div>
+><div>    hello\world</div> : JSX.Element
+>div : any
+
+    hello\
+
+world
+</div>;
+>div : any
 

tests/cases/conformance/jsx/tsxReactEmitWhitespace.tsx

@@ -51,3 +51,10 @@ var p = 0;
 
   </div>;
 
+// Emit "hello\\ world"
+<div>
+
+    hello\
+
+world
+</div>;