_loop_2 = function () {
                var _a;
                var sig = b4(buf, i);
                if (sig == 0x4034B50) {
                    f = 1, is = i;
                    this_1.d = null;
                    this_1.c = 0;
                    var bf = b2(buf, i + 6), cmp_1 = b2(buf, i + 8), u = bf & 2048, dd = bf & 8, fnl = b2(buf, i + 26), es = b2(buf, i + 28);
                    if (l > i + 30 + fnl + es) {
                        var chks_3 = [];
                        this_1.k.unshift(chks_3);
                        f = 2;
                        var sc_1 = b4(buf, i + 18), su_1 = b4(buf, i + 22);
                        var fn_1 = strFromU8(buf.subarray(i + 30, i += 30 + fnl), !u);
                        if (sc_1 == 4294967295) {
                            _a = dd ? [-2] : z64e(buf, i), sc_1 = _a[0], su_1 = _a[1];
                        }
                        else if (dd)
                            sc_1 = -1;
                        i += es;
                        this_1.c = sc_1;
                        var d_1;
                        var file_1 = {
                            name: fn_1,
                            compression: cmp_1,
                            start: function () {
                                if (!file_1.ondata)
                                    err(5);
                                if (!sc_1)
                                    file_1.ondata(null, et, true);
                                else {
                                    var ctr = _this.o[cmp_1];
                                    if (!ctr)
                                        file_1.ondata(err(14, 'unknown compression type ' + cmp_1, 1), null, false);
                                    d_1 = sc_1 < 0 ? new ctr(fn_1) : new ctr(fn_1, sc_1, su_1);
                                    d_1.ondata = function (err, dat, final) { file_1.ondata(err, dat, final); };
                                    for (var _i = 0, chks_4 = chks_3; _i < chks_4.length; _i++) {
                                        var dat = chks_4[_i];
                                        d_1.push(dat, false);
                                    }
                                    if (_this.k[0] == chks_3 && _this.c)
                                        _this.d = d_1;
                                    else
                                        d_1.push(et, true);
                                }
                            },
                            terminate: function () {
                                if (d_1 && d_1.terminate)
                                    d_1.terminate();
                            }
                        };
                        if (sc_1 >= 0)
                            file_1.size = sc_1, file_1.originalSize = su_1;
                        this_1.onfile(file_1);
                    }
                    return "break";
                }
                else if (oc) {
                    if (sig == 0x8074B50) {
                        is = i += 12 + (oc == -2 && 8), f = 3, this_1.c = 0;
                        return "break";
                    }
                    else if (sig == 0x2014B50) {
                        is = i -= 4, f = 3, this_1.c = 0;
                        return "break";
                    }
                }
            }
Pushes a chunk to be unzipped
@param chunk The chunk to push
@param final Whether this is the last chunk