Is xFanatical Safe Doc safe?

{  key: "registerLicenseKey",  value: (a = M(b().mark((function e(n) {    var r, o, M, i, p, a, s, O;    return b().wrap((function(e) {      for (;;) switch (e.prev = e.next) {        case 0:          if (!(0, c.isEmpty)(n)) {            e.next = 4;            break          }          throw new Error("invalid license key");        case 4:          return e.prev = 4, e.next = 7, Te.getState("userEmail");        case 7:          if (r = e.sent) {            e.next = 10;            break          }          throw new G("user not signed in, cannot register license key");        case 10:          return o = r.split("@")[1], M = {            licenseKey: n,            userDomain: o          }, e.next = 15, we("".concat("https://denali.xfanatical.com", "/api/v1/mtbaldy/license-certificates"), {            method: "POST",            mode: "cors",            headers: {              Authorization: "Bearer ".concat("[redacted static extension token]"),              "Content-Type": "application/json",              "X-Auth-Version": "v1"            },            body: JSON.stringify(M),            retries: 10          });        case 15:          return i = e.sent, p = i.data.certificate, e.next = 20, ee.storageRemove("sync", L);        case 20:          if (!this._isLicenseCertificateValid(p, o)) {            e.next = 25;            break          }          return e.next = 23, this.saveLicenseCertificate(p);        case 23:          e.next = 26;          break;        case 25:          throw new Error("invalid license certificate ".concat(p, ", userDomain=").concat(o, ", ") + "localTime=".concat(Math.floor(new Date / 1e3)));        case 26:          e.next = 43;          break;        case 28:          if (e.prev = 28, e.t0 = e.catch(4), "error= ".concat((0, c.has)(e.t0, "response.data") ? JSON.stringify(e.t0.response.data) : e.t0), !e.t0.response && e.t0.request, !((a = (0, c.get)(e.t0, "response.status")) >= 400 && a < 500)) {            e.next = 42;            break          }          return e.next = 37, ee.storageGet("sync", L);        case 37:          return s = e.sent, O = (0, c.get)(s, [L, "attempts"], 0), (0, c.isNumber)(O) || (O = 0), e.next = 42, ee.storageSet("sync", t({}, L, {            nextAttempt: z()().add(1, "d").unix(),            attempts: O + 1          }));        case 42:          throw e.t0;        case 43:        case "end":          return e.stop()      }    }), e, this, [      [4, 28]    ])  }))), function(e) {    return a.apply(this, arguments)  })}