JS: export statement's function name must remain for non-default decl…

…arations, fixes #375

js/js.go

@@ -354,13 +354,16 @@ func (m *jsMinifier) minifyStmt(i js.IStmt) {
 		if stmt.Decl != nil {
 			if stmt.Default {
 				m.write(spaceDefaultBytes)
-			}
-			m.writeSpaceBeforeIdent()
-			m.minifyExpr(stmt.Decl, js.OpAssign)
-			_, isHoistable := stmt.Decl.(*js.FuncDecl)
-			_, isClass := stmt.Decl.(*js.ClassDecl)
-			if !isHoistable && !isClass {
-				m.requireSemicolon()
+				m.writeSpaceBeforeIdent()
+				m.minifyExpr(stmt.Decl, js.OpAssign)
+				_, isHoistable := stmt.Decl.(*js.FuncDecl)
+				_, isClass := stmt.Decl.(*js.ClassDecl)
+				if !isHoistable && !isClass {
+					m.requireSemicolon()
+				}
+			} else {
+				m.writeSpaceBeforeIdent()
+				m.minifyStmt(stmt.Decl.(js.IStmt)) // can only be variable, function, or class decl
 			}
 		} else {
 			if len(stmt.List) == 1 && (len(stmt.List[0].Name) == 1 && stmt.List[0].Name[0] == '*' || stmt.List[0].Name == nil && len(stmt.List[0].Binding) == 1 && stmt.List[0].Binding[0] == '*') {

js/js_test.go

@@ -92,6 +92,7 @@ func TestJS(t *testing.T) {
 		{`export {a as b, c} from 'path'`, `export{a as b,c}from'path'`},
 		{`export {a as b, c}`, `export{a as b,c}`},
 		{`export var a = b`, `export var a=b`},
+		{`export function a(){}`, `export function a(){}`},
 		{`export default a = b`, `export default a=b`},
 		{`export default a = b;c=d`, `export default a=b;c=d`},
 		{`export default function a(){};c=d`, `export default function(){}c=d`},
@@ -642,6 +643,7 @@ func TestJS(t *testing.T) {
 		{`if(e?0:n=1,o=2){o.a}`, `(e?0:n=1,o=2)&&o.a`},                                                  // #347
 		{`const a=(a,b)=>({...a,b})`, `const a=(a,b)=>({...a,b})`},                                      // #369
 		{`if(!a)debugger;`, `if(!a)debugger`},                                                           // #370
+		{`export function a(b){}`, `export function a(b){}`},                                            // #375
 	}
 
 	m := minify.New()