x.js

// ...
       while (true) {
            if ((i56549 < len56548)) {
                var mode56551 = (path56547[i56549]);
                var key56552 = (path56547[(i56549 + (1))]);
                var next_obj56553 = oops.core.get_key_dynamically.call(null, obj56550, key56552, mode56551);
                var G__56555 = mode56551;
                switch (G__56555) {
                    case (0):
                        var G__56557 = (i56549 + (2));
                        var G__56558 = next_obj56553;
                        i56549 = G__56557;
                        obj56550 = G__56558;
                        continue;

                        break;
                    case (1):
                        if (cljs.core.some_QMARK_.call(null, next_obj56553)) {
                            var G__56559 = (i56549 + (2));
                            var G__56560 = next_obj56553;
                            i56549 = G__56559;
                            obj56550 = G__56560;
                            continue;
                        } else {
                            return null;
                        }

                        break;
                    case (2):
                        if (cljs.core.some_QMARK_.call(null, next_obj56553)) {
                            var G__56561 = (i56549 + (2));
                            var G__56562 = next_obj56553;
                            i56549 = G__56561;
                            obj56550 = G__56562;
                            continue;
                        } else {
                            var new_prop56554 = oops.state._STAR_punching_factory_STAR_.call(null);
                            (obj56550[key56552] = new_prop56554);

                            var G__56563 = (i56549 + (2));
                            var G__56564 = new_prop56554;
                            i56549 = G__56563;
                            obj56550 = G__56564;
                            continue;
                        }

                        break;
                    default:
                        throw (new Error([cljs.core.str("No matching clause: "), cljs.core.str(mode56551)].join('')));

                }
            } else {
                return obj56550;
            }
            break;
        }