Handle indentation of nested ternary operators in JS

* lisp/progmodes/js.el (js--looking-at-operator-p):
Handle nested ternary operators.

lisp/progmodes/js.el

@@ -1788,6 +1788,8 @@ This performs fontification according to `js--class-styles'."
     (and (looking-at js--indent-operator-re)
          (or (not (eq (char-after) ?:))
              (save-excursion
+               (js--backward-syntactic-ws)
+               (when (= (char-before) ?\)) (backward-list))
                (and (js--re-search-backward "[?:{]\\|\\_<case\\_>" nil t)
                     (eq (char-after) ??))))
          (not (and

test/manual/indent/js.js

@@ -128,6 +128,13 @@ if (x > 72 &&
 let x = svg.mumble()
     .zzz;
 
+// https://github.com/mooz/js2-mode/issues/405
+if (1) {
+  isSet
+    ? (isEmpty ? 2 : 3)
+    : 4
+}
+
 // Local Variables:
 // indent-tabs-mode: nil
 // js-indent-level: 2