Merge pull request #746 from VastBlast/fix-issue-745

Respect ES Version, fixes #745

Author: tdewolff

js/util.go

@@ -822,10 +822,13 @@ func (m *jsMinifier) optimizeCondExpr(expr *js.CondExpr, prec js.OpPrec) js.IExp
 	} else if isEqualExpr(expr.X, expr.Y) {
 		// if true and false bodies are equal
 		return groupExpr(&js.CommaExpr{[]js.IExpr{expr.Cond, expr.X}}, prec)
-	} else if nullishExpr, ok := toNullishExpr(expr); ok && m.o.minVersion(2020) {
-		// no need to check whether left/right need to add groups, as the space saving is always more
-		return nullishExpr
 	} else {
+		if m.o.minVersion(2020) {
+			if nullishExpr, ok := toNullishExpr(expr); ok {
+				// no need to check whether left/right need to add groups, as the space saving is always more
+				return nullishExpr
+			}
+		}
 		callX, isCallX := expr.X.(*js.CallExpr)
 		callY, isCallY := expr.Y.(*js.CallExpr)
 		if isCallX && isCallY && len(callX.Args.List) == 1 && len(callY.Args.List) == 1 && !callX.Args.List[0].Rest && !callY.Args.List[0].Rest && isEqualExpr(callX.X, callY.X) {