Add testcase for #4101

Author: sheetalkamat

tests/baselines/reference/exportClauseEmit.js

@@ -0,0 +1,16 @@
+//// [exportClauseEmit.ts]
+var str = "Hello";
+// Change str
+str = "Hello World!!!";
+export {str};
+
+//// [exportClauseEmit.js]
+var str = "Hello";
+exports.str = str;
+// Change str
+str = "Hello World!!!";
+
+
+//// [exportClauseEmit.d.ts]
+declare var str: string;
+export { str };

tests/baselines/reference/exportClauseEmit.symbols

@@ -0,0 +1,11 @@
+=== tests/cases/compiler/exportClauseEmit.ts ===
+var str = "Hello";
+>str : Symbol(str, Decl(exportClauseEmit.ts, 0, 3))
+
+// Change str
+str = "Hello World!!!";
+>str : Symbol(str, Decl(exportClauseEmit.ts, 0, 3))
+
+export {str};
+>str : Symbol(str, Decl(exportClauseEmit.ts, 3, 8))
+

tests/baselines/reference/exportClauseEmit.types

@@ -0,0 +1,14 @@
+=== tests/cases/compiler/exportClauseEmit.ts ===
+var str = "Hello";
+>str : string
+>"Hello" : string
+
+// Change str
+str = "Hello World!!!";
+>str = "Hello World!!!" : string
+>str : string
+>"Hello World!!!" : string
+
+export {str};
+>str : string
+

tests/cases/compiler/exportClauseEmit.ts

@@ -0,0 +1,6 @@
+//@module: commonjs
+//@declaration: true
+var str = "Hello";
+// Change str
+str = "Hello World!!!";
+export {str};