JS: revert previous (useless) commit

Author: tdewolff

js/js.go

@@ -1212,9 +1212,9 @@ func (m *jsMinifier) minifyExpr(i js.IExpr, prec js.OpPrec) {
 						if js.OpEquals < prec {
 							m.write(openParenBytes)
 						}
-						m.minifyExpr(v, js.OpEquals)
+						m.write(v.Data)
 						m.write(notEqualBytes)
-						m.minifyExpr(v, js.OpEquals)
+						m.write(v.Data)
 						if js.OpEquals < prec {
 							m.write(closeParenBytes)
 						}
@@ -1276,11 +1276,11 @@ func (m *jsMinifier) minifyExpr(i js.IExpr, prec js.OpPrec) {
 							if js.OpAssign < prec {
 								m.write(openParenBytes)
 							}
-							m.minifyExpr(v, js.OpCoalesce)
+							m.write(v.Data)
 							m.write([]byte("<0?-"))
-							m.minifyExpr(v, js.OpAssign)
+							m.write(v.Data)
 							m.write(colonBytes)
-							m.minifyExpr(v, js.OpAssign)
+							m.write(v.Data)
 							if js.OpAssign < prec {
 								m.write(closeParenBytes)
 							}

js/js_test.go

@@ -906,6 +906,8 @@ func TestJSVarRenaming(t *testing.T) {
 		{`()=>{var a;if(x){const b=0;while(true);}}`, `()=>{if(x){const b=0;for(var a;!0;);}}`},
 		{`(e,s)=>{e=>0,s(e(s))}`, `(a,b)=>{a=>0,b(a(b))}`}, // #469
 		{`()=>{var c;try {a} catch(b) {c}}`, `()=>{var b;try{a}catch{b}}`},
+		{`()=>{let foo;Math.abs(foo)}`, `()=>{let a;a<0?-a:a}`},
+		{`()=>{let foo;isNaN(foo)}`, `()=>{let a;a!=a}`},
 
 		// go-fuzz
 		{`var ÆÆ,ÆÆ=t;var ÆÆ=v,a=ÿ`, `var ÆÆ=t,ÆÆ=v,a=ÿ`},