diff --git a/js/modules/data.d.ts b/js/modules/data.d.ts
index 92441555f..c70fd17e1 100644
--- a/js/modules/data.d.ts
+++ b/js/modules/data.d.ts
@@ -179,7 +179,7 @@ export function updateGuardNodes(nodes: Array<string>): Promise<void>;
 
 // Storage Items
 export function createOrUpdateItem(data: StorageItem): Promise<void>;
-export function getItemById(id: string): Promise<StorageItem>;
+export function getItemById(id: string): Promise<StorageItem | undefined>;
 export function getAlItems(): Promise<Array<StorageItem>>;
 export function bulkAddItems(array: Array<StorageItem>): Promise<void>;
 export function removeItemById(id: string): Promise<void>;
diff --git a/js/modules/data.js b/js/modules/data.js
index 39819d5e4..cfbc3d006 100644
--- a/js/modules/data.js
+++ b/js/modules/data.js
@@ -1,7 +1,8 @@
 /* global window, setTimeout, clearTimeout, IDBKeyRange, dcodeIO */
-
 const electron = require('electron');
 
+const { ipcRenderer } = electron;
+
 // TODO: this results in poor readability, would be
 // much better to explicitly call with `_`.
 const {
@@ -21,12 +22,6 @@ const _ = require('lodash');
 const { base64ToArrayBuffer, arrayBufferToBase64 } = require('./crypto');
 const MessageType = require('./types/message');
 
-const { ipcRenderer } = electron;
-
-// We listen to a lot of events on ipcRenderer, often on the same channel. This prevents
-//   any warnings that might be sent to the console in that case.
-ipcRenderer.setMaxListeners(0);
-
 const DATABASE_UPDATE_TIMEOUT = 2 * 60 * 1000; // two minutes
 
 const SQL_CHANNEL_KEY = 'sql-channel';
@@ -44,6 +39,7 @@ let _shutdownPromise = null;
 const channels = {};
 
 module.exports = {
+  init,
   _jobs,
   _cleanData,
 
@@ -212,6 +208,42 @@ module.exports = {
   createOrUpdateSenderKeys,
 };
 
+function init() {
+  // We listen to a lot of events on ipcRenderer, often on the same channel. This prevents
+  //   any warnings that might be sent to the console in that case.
+  ipcRenderer.setMaxListeners(0);
+
+  forEach(module.exports, fn => {
+    if (isFunction(fn) && fn.name !== 'init') {
+      makeChannel(fn.name);
+    }
+  });
+
+  ipcRenderer.on(
+    `${SQL_CHANNEL_KEY}-done`,
+    (event, jobId, errorForDisplay, result) => {
+      const job = _getJob(jobId);
+      if (!job) {
+        throw new Error(
+          `Received SQL channel reply to job ${jobId}, but did not have it in our registry!`
+        );
+      }
+
+      const { resolve, reject, fnName } = job;
+
+      if (errorForDisplay) {
+        return reject(
+          new Error(
+            `Error received from SQL channel job ${jobId} (${fnName}): ${errorForDisplay}`
+          )
+        );
+      }
+
+      return resolve(result);
+    }
+  );
+}
+
 // When IPC arguments are prepared for the cross-process send, they are JSON.stringified.
 // We can't send ArrayBuffers or BigNumbers (what we get from proto library for dates).
 function _cleanData(data) {
@@ -352,30 +384,6 @@ function _getJob(id) {
   return _jobs[id];
 }
 
-ipcRenderer.on(
-  `${SQL_CHANNEL_KEY}-done`,
-  (event, jobId, errorForDisplay, result) => {
-    const job = _getJob(jobId);
-    if (!job) {
-      throw new Error(
-        `Received SQL channel reply to job ${jobId}, but did not have it in our registry!`
-      );
-    }
-
-    const { resolve, reject, fnName } = job;
-
-    if (errorForDisplay) {
-      return reject(
-        new Error(
-          `Error received from SQL channel job ${jobId} (${fnName}): ${errorForDisplay}`
-        )
-      );
-    }
-
-    return resolve(result);
-  }
-);
-
 function makeChannel(fnName) {
   channels[fnName] = (...args) => {
     const jobId = _makeJob(fnName);
@@ -398,12 +406,6 @@ function makeChannel(fnName) {
   };
 }
 
-forEach(module.exports, fn => {
-  if (isFunction(fn)) {
-    makeChannel(fn.name);
-  }
-});
-
 function keysToArrayBuffer(keys, data) {
   const updated = cloneDeep(data);
   for (let i = 0, max = keys.length; i < max; i += 1) {
diff --git a/js/modules/signal.js b/js/modules/signal.js
index c676c5845..b4dad50a8 100644
--- a/js/modules/signal.js
+++ b/js/modules/signal.js
@@ -263,6 +263,8 @@ function initializeMigrations({
 exports.setup = (options = {}) => {
   const { Attachments, userDataPath, getRegionCode, logger } = options;
 
+  Data.init();
+
   const Migrations = initializeMigrations({
     userDataPath,
     getRegionCode,
diff --git a/libloki/crypto.js b/libloki/crypto.js
index cbbaad074..e9a9988d2 100644
--- a/libloki/crypto.js
+++ b/libloki/crypto.js
@@ -149,10 +149,13 @@
         myPrivateKey
       );
       const ivAndCiphertext = await DHEncrypt(symmetricKey, plaintext);
+      const binaryIvAndCiphertext = dcodeIO.ByteBuffer.wrap(
+        ivAndCiphertext
+      ).toString('binary');
       return {
         type: textsecure.protobuf.Envelope.Type.FRIEND_REQUEST,
-        body: ivAndCiphertext,
-        registrationId: null,
+        body: binaryIvAndCiphertext,
+        registrationId: undefined,
       };
     }
 
diff --git a/package.json b/package.json
index 8dda1a941..6d9df3e71 100644
--- a/package.json
+++ b/package.json
@@ -144,7 +144,7 @@
     "@types/redux-logger": "3.0.7",
     "@types/rimraf": "2.0.2",
     "@types/semver": "5.5.0",
-    "@types/sinon": "4.3.1",
+    "@types/sinon": "9.0.4",
     "@types/uuid": "3.4.4",
     "arraybuffer-loader": "1.0.3",
     "asar": "0.14.0",
@@ -180,9 +180,10 @@
     "qs": "6.5.1",
     "react-docgen-typescript": "1.2.6",
     "react-styleguidist": "7.0.1",
-    "sinon": "4.4.2",
+    "sinon": "9.0.2",
     "spectron": "^10.0.0",
     "ts-loader": "4.1.0",
+    "ts-mock-imports": "^1.3.0",
     "tslint": "5.13.0",
     "tslint-microsoft-contrib": "6.0.0",
     "tslint-react": "3.6.0",
diff --git a/ts/session/crypto/MessageEncrypter.ts b/ts/session/crypto/MessageEncrypter.ts
index 22ce64ccc..8efe6512b 100644
--- a/ts/session/crypto/MessageEncrypter.ts
+++ b/ts/session/crypto/MessageEncrypter.ts
@@ -1,7 +1,10 @@
 import { EncryptionType } from '../types/EncryptionType';
 import { SignalService } from '../../protobuf';
+import { libloki, libsignal, Signal, textsecure } from '../../window';
+import { CipherTextObject } from '../../window/types/libsignal-protocol';
+import { UserUtil } from '../../util';
 
-function padPlainTextBuffer(messageBuffer: Uint8Array): Uint8Array {
+export function padPlainTextBuffer(messageBuffer: Uint8Array): Uint8Array {
   const plaintext = new Uint8Array(
     getPaddedMessageLength(messageBuffer.byteLength + 1) - 1
   );
@@ -22,19 +25,75 @@ function getPaddedMessageLength(originalLength: number): number {
   return messagePartCount * 160;
 }
 
-export function encrypt(
+export type Base64String = string;
+
+/**
+ * Encrypt `plainTextBuffer` with given `encryptionType` for `device`.
+ *
+ * @param device The device to encrypt for.
+ * @param plainTextBuffer The unpadded plaintext buffer.
+ * @param encryptionType The type of encryption.
+ * @returns The envelope type and the base64 encoded cipher text
+ */
+export async function encrypt(
   device: string,
   plainTextBuffer: Uint8Array,
   encryptionType: EncryptionType
-): {
+): Promise<{
   envelopeType: SignalService.Envelope.Type;
-  cipherText: Uint8Array;
-} {
+  cipherText: Base64String;
+}> {
   const plainText = padPlainTextBuffer(plainTextBuffer);
-  // TODO: Do encryption here?
+  const address = new libsignal.SignalProtocolAddress(device, 1);
+
+  if (encryptionType === EncryptionType.MediumGroup) {
+    // TODO: Do medium group stuff here
+    throw new Error('Encryption is not yet supported');
+  }
+
+  let innerCipherText: CipherTextObject;
+  if (encryptionType === EncryptionType.SessionReset) {
+    const cipher = new libloki.crypto.FallBackSessionCipher(address);
+    innerCipherText = await cipher.encrypt(plainText.buffer);
+  } else {
+    const cipher = new libsignal.SessionCipher(
+      textsecure.storage.protocol,
+      address
+    );
+    innerCipherText = await cipher.encrypt(plainText.buffer);
+  }
+
+  return encryptUsingSealedSender(device, innerCipherText);
+}
+
+async function encryptUsingSealedSender(
+  device: string,
+  innerCipherText: CipherTextObject
+): Promise<{
+  envelopeType: SignalService.Envelope.Type;
+  cipherText: Base64String;
+}> {
+  const ourNumber = await UserUtil.getCurrentDevicePubKey();
+  if (!ourNumber) {
+    throw new Error('Failed to fetch current device public key.');
+  }
+
+  const certificate = SignalService.SenderCertificate.create({
+    sender: ourNumber,
+    senderDevice: 1,
+  });
+
+  const cipher = new Signal.Metadata.SecretSessionCipher(
+    textsecure.storage.protocol
+  );
+  const cipherTextBuffer = await cipher.encrypt(
+    device,
+    certificate,
+    innerCipherText
+  );
 
   return {
-    envelopeType: SignalService.Envelope.Type.CIPHERTEXT,
-    cipherText: new Uint8Array(),
+    envelopeType: SignalService.Envelope.Type.UNIDENTIFIED_SENDER,
+    cipherText: Buffer.from(cipherTextBuffer).toString('base64'),
   };
 }
diff --git a/ts/test/session/crypto/MessageEncrypter_test.ts b/ts/test/session/crypto/MessageEncrypter_test.ts
new file mode 100644
index 000000000..5d6b4155d
--- /dev/null
+++ b/ts/test/session/crypto/MessageEncrypter_test.ts
@@ -0,0 +1,163 @@
+import { expect } from 'chai';
+import * as crypto from 'crypto';
+import * as sinon from 'sinon';
+import { MessageEncrypter } from '../../../session/crypto';
+import { EncryptionType } from '../../../session/types/EncryptionType';
+import { Stubs, TestUtils } from '../../test-utils';
+import { UserUtil } from '../../../util';
+import { SignalService } from '../../../protobuf';
+
+describe('MessageEncrypter', () => {
+  const sandbox = sinon.createSandbox();
+  const ourNumber = 'ourNumber';
+
+  beforeEach(() => {
+    TestUtils.stubWindow('libsignal', {
+      SignalProtocolAddress: sandbox.stub(),
+      SessionCipher: Stubs.SessionCipherStub,
+    } as any);
+
+    TestUtils.stubWindow('textsecure', {
+      storage: {
+        protocol: sandbox.stub(),
+      },
+    });
+
+    TestUtils.stubWindow('Signal', {
+      Metadata: {
+        SecretSessionCipher: Stubs.SecretSessionCipherStub,
+      },
+    });
+
+    TestUtils.stubWindow('libloki', {
+      crypto: {
+        FallBackSessionCipher: Stubs.FallBackSessionCipherStub,
+      },
+    });
+
+    sandbox.stub(UserUtil, 'getCurrentDevicePubKey').resolves(ourNumber);
+  });
+
+  afterEach(() => {
+    sandbox.restore();
+    TestUtils.restoreStubs();
+  });
+
+  describe('EncryptionType', () => {
+    describe('MediumGroup', () => {
+      it('should throw an error', async () => {
+        const data = crypto.randomBytes(10);
+        const promise = MessageEncrypter.encrypt(
+          '1',
+          data,
+          EncryptionType.MediumGroup
+        );
+        await expect(promise).to.be.rejectedWith(
+          'Encryption is not yet supported'
+        );
+      });
+    });
+
+    describe('SessionReset', () => {
+      it('should call FallbackSessionCipher encrypt', async () => {
+        const data = crypto.randomBytes(10);
+        const spy = sandbox.spy(
+          Stubs.FallBackSessionCipherStub.prototype,
+          'encrypt'
+        );
+        await MessageEncrypter.encrypt('1', data, EncryptionType.SessionReset);
+        expect(spy.called).to.equal(
+          true,
+          'FallbackSessionCipher.encrypt should be called.'
+        );
+      });
+
+      it('should pass the padded message body to encrypt', async () => {
+        const data = crypto.randomBytes(10);
+        const spy = sandbox.spy(
+          Stubs.FallBackSessionCipherStub.prototype,
+          'encrypt'
+        );
+        await MessageEncrypter.encrypt('1', data, EncryptionType.SessionReset);
+
+        const paddedData = MessageEncrypter.padPlainTextBuffer(data);
+        const firstArgument = new Uint8Array(spy.args[0][0]);
+        expect(firstArgument).to.deep.equal(paddedData);
+      });
+
+      it('should return an UNIDENTIFIED SENDER envelope type', async () => {
+        const data = crypto.randomBytes(10);
+        const result = await MessageEncrypter.encrypt(
+          '1',
+          data,
+          EncryptionType.SessionReset
+        );
+        expect(result.envelopeType).to.deep.equal(
+          SignalService.Envelope.Type.UNIDENTIFIED_SENDER
+        );
+      });
+    });
+
+    describe('Signal', () => {
+      it('should call SessionCipher encrypt', async () => {
+        const data = crypto.randomBytes(10);
+        const spy = sandbox.spy(Stubs.SessionCipherStub.prototype, 'encrypt');
+        await MessageEncrypter.encrypt('1', data, EncryptionType.Signal);
+        expect(spy.called).to.equal(
+          true,
+          'SessionCipher.encrypt should be called.'
+        );
+      });
+
+      it('should pass the padded message body to encrypt', async () => {
+        const data = crypto.randomBytes(10);
+        const spy = sandbox.spy(Stubs.SessionCipherStub.prototype, 'encrypt');
+        await MessageEncrypter.encrypt('1', data, EncryptionType.Signal);
+
+        const paddedData = MessageEncrypter.padPlainTextBuffer(data);
+        const firstArgument = new Uint8Array(spy.args[0][0]);
+        expect(firstArgument).to.deep.equal(paddedData);
+      });
+
+      it('should return an UNIDENTIFIED SENDER envelope type', async () => {
+        const data = crypto.randomBytes(10);
+        const result = await MessageEncrypter.encrypt(
+          '1',
+          data,
+          EncryptionType.Signal
+        );
+        expect(result.envelopeType).to.deep.equal(
+          SignalService.Envelope.Type.UNIDENTIFIED_SENDER
+        );
+      });
+    });
+  });
+
+  describe('Sealed Sender', () => {
+    it('should pass the correct values to SecretSessionCipher encrypt', async () => {
+      const types = [EncryptionType.SessionReset, EncryptionType.Signal];
+      for (const type of types) {
+        const spy = sandbox.spy(
+          Stubs.SecretSessionCipherStub.prototype,
+          'encrypt'
+        );
+        await MessageEncrypter.encrypt('user', crypto.randomBytes(10), type);
+
+        const args = spy.args[0];
+        const [device, certificate] = args;
+
+        const expectedCertificate = SignalService.SenderCertificate.create({
+          sender: ourNumber,
+          senderDevice: 1,
+        });
+
+        expect(device).to.equal('user');
+        expect(certificate.toJSON()).to.deep.equal(
+          expectedCertificate.toJSON()
+        );
+
+        spy.restore();
+      }
+    });
+  });
+});
diff --git a/ts/test/session/utils/JobQueue_test.ts b/ts/test/session/utils/JobQueue_test.ts
index 47b8a5413..88b31323c 100644
--- a/ts/test/session/utils/JobQueue_test.ts
+++ b/ts/test/session/utils/JobQueue_test.ts
@@ -1,7 +1,7 @@
 import chai from 'chai';
 import { v4 as uuid } from 'uuid';
 import { JobQueue } from '../../../session/utils/JobQueue';
-import { timeout } from '../../utils/timeout';
+import { timeout } from '../../test-utils';
 
 // tslint:disable-next-line: no-require-imports no-var-requires
 const chaiAsPromised = require('chai-as-promised');
diff --git a/ts/test/test-utils/index.ts b/ts/test/test-utils/index.ts
new file mode 100644
index 000000000..fae05690f
--- /dev/null
+++ b/ts/test/test-utils/index.ts
@@ -0,0 +1,5 @@
+import * as TestUtils from './testUtils';
+import * as Stubs from './stubs';
+export * from './timeout';
+
+export { TestUtils, Stubs };
diff --git a/ts/test/test-utils/stubs/ciphers/FallBackSessionCipherStub.ts b/ts/test/test-utils/stubs/ciphers/FallBackSessionCipherStub.ts
new file mode 100644
index 000000000..ea30f41ad
--- /dev/null
+++ b/ts/test/test-utils/stubs/ciphers/FallBackSessionCipherStub.ts
@@ -0,0 +1,11 @@
+import { CipherTextObject } from '../../../../window/types/libsignal-protocol';
+import { SignalService } from '../../../../protobuf';
+
+export class FallBackSessionCipherStub {
+  public async encrypt(buffer: ArrayBuffer): Promise<CipherTextObject> {
+    return {
+      type: SignalService.Envelope.Type.FRIEND_REQUEST,
+      body: Buffer.from(buffer).toString('binary'),
+    };
+  }
+}
diff --git a/ts/test/test-utils/stubs/ciphers/SecretSessionCipherStub.ts b/ts/test/test-utils/stubs/ciphers/SecretSessionCipherStub.ts
new file mode 100644
index 000000000..826ab7308
--- /dev/null
+++ b/ts/test/test-utils/stubs/ciphers/SecretSessionCipherStub.ts
@@ -0,0 +1,26 @@
+import { SignalService } from '../../../../protobuf';
+import { CipherTextObject } from '../../../../window/types/libsignal-protocol';
+
+export class SecretSessionCipherStub {
+  public async encrypt(
+    _destinationPubkey: string,
+    _senderCertificate: SignalService.SenderCertificate,
+    innerEncryptedMessage: CipherTextObject
+  ): Promise<ArrayBuffer> {
+    const { body } = innerEncryptedMessage;
+
+    return Buffer.from(body, 'binary').buffer;
+  }
+
+  public async decrypt(
+    _cipherText: ArrayBuffer,
+    _me: { number: string; deviceId: number }
+  ): Promise<{
+    isMe?: boolean;
+    sender: string;
+    content: ArrayBuffer;
+    type: SignalService.Envelope.Type;
+  }> {
+    throw new Error('Not implemented');
+  }
+}
diff --git a/ts/test/test-utils/stubs/ciphers/SessionCipherStub.ts b/ts/test/test-utils/stubs/ciphers/SessionCipherStub.ts
new file mode 100644
index 000000000..3d08bebfe
--- /dev/null
+++ b/ts/test/test-utils/stubs/ciphers/SessionCipherStub.ts
@@ -0,0 +1,20 @@
+import { CipherTextObject } from '../../../../window/types/libsignal-protocol';
+import { SignalService } from '../../../../protobuf';
+
+export class SessionCipherStub {
+  public storage: any;
+  public address: any;
+  constructor(storage: any, address: any) {
+    this.storage = storage;
+    this.address = address;
+  }
+
+  public async encrypt(
+    buffer: ArrayBuffer | Uint8Array
+  ): Promise<CipherTextObject> {
+    return {
+      type: SignalService.Envelope.Type.CIPHERTEXT,
+      body: Buffer.from(buffer).toString('binary'),
+    };
+  }
+}
diff --git a/ts/test/test-utils/stubs/ciphers/index.ts b/ts/test/test-utils/stubs/ciphers/index.ts
new file mode 100644
index 000000000..290785930
--- /dev/null
+++ b/ts/test/test-utils/stubs/ciphers/index.ts
@@ -0,0 +1,3 @@
+export * from './SessionCipherStub';
+export * from './SecretSessionCipherStub';
+export * from './FallBackSessionCipherStub';
diff --git a/ts/test/test-utils/stubs/index.ts b/ts/test/test-utils/stubs/index.ts
new file mode 100644
index 000000000..10ad19f0e
--- /dev/null
+++ b/ts/test/test-utils/stubs/index.ts
@@ -0,0 +1 @@
+export * from './ciphers';
diff --git a/ts/test/test-utils/testUtils.ts b/ts/test/test-utils/testUtils.ts
new file mode 100644
index 000000000..317186827
--- /dev/null
+++ b/ts/test/test-utils/testUtils.ts
@@ -0,0 +1,42 @@
+import * as sinon from 'sinon';
+import { ImportMock } from 'ts-mock-imports';
+import * as DataShape from '../../../js/modules/data';
+import * as window from '../../window';
+
+const sandbox = sinon.createSandbox();
+
+// We have to do this in a weird way because Data uses module.exports
+//  which doesn't play well with sinon or ImportMock
+// tslint:disable-next-line: no-require-imports no-var-requires
+const Data = require('../../../js/modules/data');
+type DataFunction = typeof DataShape;
+
+/**
+ * Stub a function inside Data.
+ *
+ * Note: This uses a custom sandbox.
+ * Please call `restoreStubs()` or `stub.restore()` to restore original functionality.
+ */
+export function stubData(fn: keyof DataFunction): sinon.SinonStub {
+  return sandbox.stub(Data, fn);
+}
+
+type WindowFunction = typeof window;
+
+/**
+ * Stub a window object.
+ *
+ * Note: This uses a custom sandbox.
+ * Please call `restoreStubs()` or `stub.restore()` to restore original functionality.
+ */
+export function stubWindow<K extends keyof WindowFunction>(
+  fn: K,
+  replaceWith?: Partial<WindowFunction[K]>
+) {
+  return ImportMock.mockOther(window, fn, replaceWith);
+}
+
+export function restoreStubs() {
+  ImportMock.restore();
+  sandbox.restore();
+}
diff --git a/ts/test/utils/timeout.ts b/ts/test/test-utils/timeout.ts
similarity index 100%
rename from ts/test/utils/timeout.ts
rename to ts/test/test-utils/timeout.ts
diff --git a/ts/test/utils/stubs/SignalAddressProtocolStub.ts b/ts/test/utils/stubs/SignalAddressProtocolStub.ts
new file mode 100644
index 000000000..1493e7578
--- /dev/null
+++ b/ts/test/utils/stubs/SignalAddressProtocolStub.ts
@@ -0,0 +1,27 @@
+import { SignalProtocolAddress } from '../../../window/types/libsignal-protocol';
+
+export class SignalProtocolAddressStub extends SignalProtocolAddress {
+  private readonly hexEncodedPublicKey: string;
+  private readonly deviceId: number;
+  constructor(hexEncodedPublicKey: string, deviceId: number) {
+    super(hexEncodedPublicKey, deviceId);
+    this.hexEncodedPublicKey = hexEncodedPublicKey;
+    this.deviceId = deviceId;
+  }
+
+  // tslint:disable-next-line: function-name
+  public static fromString(encodedAddress: string): SignalProtocolAddressStub {
+    const values = encodedAddress.split('.');
+
+    return new SignalProtocolAddressStub(values[0], Number(values[1]));
+  }
+
+  public getName(): string { return this.hexEncodedPublicKey; }
+  public getDeviceId(): number { return this.deviceId; }
+
+  public equals(other: SignalProtocolAddress): boolean {
+    return other.getName() === this.hexEncodedPublicKey;
+  }
+
+  public toString(): string { return this.hexEncodedPublicKey; }
+}
diff --git a/ts/util/index.ts b/ts/util/index.ts
index ec0ca2e21..8416f8630 100644
--- a/ts/util/index.ts
+++ b/ts/util/index.ts
@@ -4,6 +4,7 @@ import { isFileDangerous } from './isFileDangerous';
 import { missingCaseError } from './missingCaseError';
 import { migrateColor } from './migrateColor';
 import { makeLookup } from './makeLookup';
+import * as UserUtil from './user';
 
 export {
   arrayBufferToObjectURL,
@@ -12,4 +13,5 @@ export {
   makeLookup,
   migrateColor,
   missingCaseError,
+  UserUtil,
 };
diff --git a/ts/util/user.ts b/ts/util/user.ts
new file mode 100644
index 000000000..cec8716ec
--- /dev/null
+++ b/ts/util/user.ts
@@ -0,0 +1,17 @@
+import { getItemById } from '../../js/modules/data';
+import { KeyPair } from '../window/types/libsignal-protocol';
+
+export async function getCurrentDevicePubKey(): Promise<string | undefined> {
+  const item = await getItemById('number_id');
+  if (!item || !item.value) {
+    return undefined;
+  }
+
+  return item.value.split('.')[0];
+}
+
+export async function getIdentityKeyPair(): Promise<KeyPair | undefined> {
+  const item = await getItemById('identityKey');
+
+  return item?.value;
+}
diff --git a/ts/window.ts b/ts/window/index.ts
similarity index 81%
rename from ts/window.ts
rename to ts/window/index.ts
index aeb19ec5d..5cfa408b9 100644
--- a/ts/window.ts
+++ b/ts/window/index.ts
@@ -1,6 +1,8 @@
-import { LocalizerType } from './types/Util';
+import { LibsignalProtocol } from './types/libsignal-protocol';
+import { SignalInterface } from './types/signal';
+import { LocalizerType } from '../types/Util';
 
-interface Window {
+interface WindowInterface extends Window {
   seedNodeList: any;
 
   WebAPI: any;
@@ -32,11 +34,11 @@ interface Window {
   shortenPubkey: any;
 
   dcodeIO: any;
-  libsignal: any;
+  libsignal: LibsignalProtocol;
   libloki: any;
   displayNameRegex: any;
 
-  Signal: any;
+  Signal: SignalInterface;
   Whisper: any;
   ConversationController: any;
 
@@ -72,7 +74,16 @@ interface Window {
   resetDatabase: any;
 }
 
-declare const window: Window;
+// In the case for tests
+// tslint:disable-next-line: no-typeof-undefined
+if (typeof window === 'undefined') {
+  const globalAny: any = global;
+  globalAny.window = {};
+}
+
+declare const window: WindowInterface;
+
+// TODO: Is there an easier way to dynamically export these?
 
 // Utilities
 export const WebAPI = window.WebAPI;
@@ -118,3 +129,7 @@ export const clearLocalData = window.clearLocalData;
 export const deleteAccount = window.deleteAccount;
 export const resetDatabase = window.resetDatabase;
 export const attemptConnection = window.attemptConnection;
+
+export const libloki = window.libloki;
+export const libsignal = window.libsignal;
+export const textsecure = window.textsecure;
diff --git a/ts/window/types/SecretSessionCipher.ts b/ts/window/types/SecretSessionCipher.ts
new file mode 100644
index 000000000..7967e2744
--- /dev/null
+++ b/ts/window/types/SecretSessionCipher.ts
@@ -0,0 +1,20 @@
+import { SignalService } from '../../protobuf';
+import { CipherTextObject } from './libsignal-protocol';
+
+export declare class SecretSessionCipher {
+  constructor(storage: any);
+  public encrypt(
+    destinationPubkey: string,
+    senderCertificate: SignalService.SenderCertificate,
+    innerEncryptedMessage: CipherTextObject
+  ): Promise<ArrayBuffer>;
+  public decrypt(
+    cipherText: ArrayBuffer,
+    me: { number: string; deviceId: number }
+  ): Promise<{
+    isMe?: boolean;
+    sender: string;
+    content: ArrayBuffer;
+    type: SignalService.Envelope.Type;
+  }>;
+}
diff --git a/ts/window/types/libsignal-protocol.ts b/ts/window/types/libsignal-protocol.ts
new file mode 100644
index 000000000..9b0e18146
--- /dev/null
+++ b/ts/window/types/libsignal-protocol.ts
@@ -0,0 +1,127 @@
+import { SignalService } from '../../protobuf';
+
+export type BinaryString = string;
+
+export type CipherTextObject = {
+  type: SignalService.Envelope.Type;
+  body: BinaryString;
+  registrationId?: number;
+};
+
+export declare class SignalProtocolAddress {
+  constructor(hexEncodedPublicKey: string, deviceId: number);
+  // tslint:disable-next-line: function-name
+  public static fromString(encodedAddress: string): SignalProtocolAddress;
+  public getName(): string;
+  public getDeviceId(): number;
+  public toString(): string;
+  public equals(other: SignalProtocolAddress): boolean;
+}
+
+export type KeyPair = {
+  pubKey: ArrayBuffer;
+  privKey: ArrayBuffer;
+};
+
+interface CurveSync {
+  generateKeyPair(): KeyPair;
+  createKeyPair(privKey: ArrayBuffer): KeyPair;
+  calculateAgreement(pubKey: ArrayBuffer, privKey: ArrayBuffer): ArrayBuffer;
+  verifySignature(
+    pubKey: ArrayBuffer,
+    msg: ArrayBuffer,
+    sig: ArrayBuffer
+  ): void;
+  calculateSignature(privKey: ArrayBuffer, message: ArrayBuffer): ArrayBuffer;
+  validatePubKeyFormat(pubKey: ArrayBuffer): ArrayBuffer;
+}
+
+interface CurveAsync {
+  generateKeyPair(): Promise<KeyPair>;
+  createKeyPair(privKey: ArrayBuffer): Promise<KeyPair>;
+  calculateAgreement(
+    pubKey: ArrayBuffer,
+    privKey: ArrayBuffer
+  ): Promise<ArrayBuffer>;
+  verifySignature(
+    pubKey: ArrayBuffer,
+    msg: ArrayBuffer,
+    sig: ArrayBuffer
+  ): Promise<void>;
+  calculateSignature(
+    privKey: ArrayBuffer,
+    message: ArrayBuffer
+  ): Promise<ArrayBuffer>;
+  validatePubKeyFormat(pubKey: ArrayBuffer): Promise<ArrayBuffer>;
+}
+
+export interface CurveInterface extends CurveSync {
+  async: CurveAsync;
+}
+
+export interface CryptoInterface {
+  encrypt(
+    key: ArrayBuffer,
+    data: ArrayBuffer,
+    iv: ArrayBuffer
+  ): Promise<ArrayBuffer>;
+  decrypt(
+    key: ArrayBuffer,
+    data: ArrayBuffer,
+    iv: ArrayBuffer
+  ): Promise<ArrayBuffer>;
+  calculateMAC(key: ArrayBuffer, data: ArrayBuffer): Promise<ArrayBuffer>;
+  verifyMAC(
+    data: ArrayBuffer,
+    key: ArrayBuffer,
+    mac: ArrayBuffer,
+    length: number
+  ): Promise<void>;
+  getRandomBytes(size: number): ArrayBuffer;
+}
+
+export interface KeyHelperInterface {
+  generateIdentityKeyPair(): Promise<KeyPair>;
+  generateRegistrationId(): number;
+  generateSignedPreKey(
+    identityKeyPair: KeyPair,
+    signedKeyId: number
+  ): Promise<{
+    keyId: number;
+    keyPair: KeyPair;
+    signature: ArrayBuffer;
+  }>;
+  generatePreKey(
+    keyId: number
+  ): Promise<{
+    keyId: number;
+    keyPair: KeyPair;
+  }>;
+}
+
+export declare class SessionCipher {
+  constructor(storage: any, remoteAddress: SignalProtocolAddress);
+  /**
+   * @returns The envelope type, registration id and binary encoded encrypted body.
+   */
+  public encrypt(buffer: ArrayBuffer | Uint8Array): Promise<CipherTextObject>;
+  public decryptPreKeyWhisperMessage(
+    buffer: ArrayBuffer | Uint8Array
+  ): Promise<ArrayBuffer>;
+  public decryptWhisperMessage(
+    buffer: ArrayBuffer | Uint8Array
+  ): Promise<ArrayBuffer>;
+  public getRecord(encodedNumber: string): Promise<any | undefined>;
+  public getRemoteRegistrationId(): Promise<number>;
+  public hasOpenSession(): Promise<boolean>;
+  public closeOpenSessionForDevice(): Promise<void>;
+  public deleteAllSessionsForDevice(): Promise<void>;
+}
+
+export interface LibsignalProtocol {
+  SignalProtocolAddress: typeof SignalProtocolAddress;
+  Curve: CurveInterface;
+  crypto: CryptoInterface;
+  KeyHelper: KeyHelperInterface;
+  SessionCipher: typeof SessionCipher;
+}
diff --git a/ts/window/types/signal.ts b/ts/window/types/signal.ts
new file mode 100644
index 000000000..e1ed96102
--- /dev/null
+++ b/ts/window/types/signal.ts
@@ -0,0 +1,9 @@
+import { SecretSessionCipher } from './SecretSessionCipher';
+
+interface Metadata {
+  SecretSessionCipher: typeof SecretSessionCipher;
+}
+
+export interface SignalInterface {
+  Metadata: Metadata;
+}
diff --git a/yarn.lock b/yarn.lock
index bf5553f64..ebb34c0e3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -113,36 +113,43 @@
   resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"
   integrity sha512-9NET910DNaIPngYnLLPeg+Ogzqsi9uM4mSboU5y6p8S5DzMTVEsJZrawi+BoDNUVBa2DhJqQYUFvMDfgU062LQ==
 
-"@sinonjs/commons@^1", "@sinonjs/commons@^1.3.0", "@sinonjs/commons@^1.7.0":
+"@sinonjs/commons@^1", "@sinonjs/commons@^1.7.0":
   version "1.7.1"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.7.1.tgz#da5fd19a5f71177a53778073978873964f49acf1"
   integrity sha512-Debi3Baff1Qu1Unc3mjJ96MgpbwTn43S1+9yJ0llWygPwDNu2aaWBD6yc9y/Z8XDRNhx7U+u2UDg2OGQXkclUQ==
   dependencies:
     type-detect "4.0.8"
 
-"@sinonjs/formatio@^2.0.0":
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
-  integrity sha512-ls6CAMA6/5gG+O/IdsBcblvnd8qcO/l1TYoNeAzp3wcISOxlPXQEus0mLcdwazEkWjaBdaJ3TaxmNgCLWwvWzg==
+"@sinonjs/commons@^1.6.0", "@sinonjs/commons@^1.7.2":
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.0.tgz#c8d68821a854c555bba172f3b06959a0039b236d"
+  integrity sha512-wEj54PfsZ5jGSwMX68G8ZXFawcSglQSXqCftWX3ec8MDUzQdHgcKvw97awHbY0efQEL5iKUOAmmVtoYgmrSG4Q==
   dependencies:
-    samsam "1.3.0"
+    type-detect "4.0.8"
 
-"@sinonjs/formatio@^3.2.1":
-  version "3.2.2"
-  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-3.2.2.tgz#771c60dfa75ea7f2d68e3b94c7e888a78781372c"
-  integrity sha512-B8SEsgd8gArBLMD6zpRw3juQ2FVSsmdd7qlevyDqzS9WTCtvF55/gAL+h6gue8ZvPYcdiPdvueM/qm//9XzyTQ==
+"@sinonjs/fake-timers@^6.0.0", "@sinonjs/fake-timers@^6.0.1":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/fake-timers/-/fake-timers-6.0.1.tgz#293674fccb3262ac782c7aadfdeca86b10c75c40"
+  integrity sha512-MZPUxrmFubI36XS1DI3qmI0YdN1gks62JtFZvxR67ljjSNCeK6U08Zx4msEWOXuofgqUt6zPHSi1H9fbjR/NRA==
+  dependencies:
+    "@sinonjs/commons" "^1.7.0"
+
+"@sinonjs/formatio@^5.0.1":
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-5.0.1.tgz#f13e713cb3313b1ab965901b01b0828ea6b77089"
+  integrity sha512-KaiQ5pBf1MpS09MuA0kp6KBQt2JUOQycqVG1NZXvzeaXe5LGFqAKueIS0bw4w0P9r7KuBSVdUk5QjXsUdu2CxQ==
   dependencies:
     "@sinonjs/commons" "^1"
-    "@sinonjs/samsam" "^3.1.0"
+    "@sinonjs/samsam" "^5.0.2"
 
-"@sinonjs/samsam@^3.1.0":
-  version "3.3.3"
-  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-3.3.3.tgz#46682efd9967b259b81136b9f120fd54585feb4a"
-  integrity sha512-bKCMKZvWIjYD0BLGnNrxVuw4dkWCYsLqFOUWw8VgKF/+5Y+mE7LfHWPIYoDXowH+3a9LsWDMo0uAP8YDosPvHQ==
+"@sinonjs/samsam@^5.0.2", "@sinonjs/samsam@^5.0.3":
+  version "5.0.3"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-5.0.3.tgz#86f21bdb3d52480faf0892a480c9906aa5a52938"
+  integrity sha512-QucHkc2uMJ0pFGjJUDP3F9dq5dx8QIaqISl9QgwLOh6P9yv877uONPGXh/OH/0zmM3tW1JjuJltAZV2l7zU+uQ==
   dependencies:
-    "@sinonjs/commons" "^1.3.0"
-    array-from "^2.1.1"
-    lodash "^4.17.15"
+    "@sinonjs/commons" "^1.6.0"
+    lodash.get "^4.4.2"
+    type-detect "^4.0.8"
 
 "@sinonjs/text-encoding@^0.7.1":
   version "0.7.1"
@@ -411,10 +418,17 @@
   dependencies:
     "@types/node" "*"
 
-"@types/sinon@4.3.1":
-  version "4.3.1"
-  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-4.3.1.tgz#32458f9b166cd44c23844eee4937814276f35199"
-  integrity sha512-DK4YtH30I67k4klURIBS4VAe1aBISfS9lgNlHFkibSmKem2tLQc5VkKoJreT3dCJAd+xRyCS8bx1o97iq3yUVg==
+"@types/sinon@9.0.4":
+  version "9.0.4"
+  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-9.0.4.tgz#e934f904606632287a6e7f7ab0ce3f08a0dad4b1"
+  integrity sha512-sJmb32asJZY6Z2u09bl0G2wglSxDlROlAejCjsnor+LzBMz17gu8IU7vKC/vWDnv9zEq2wqADHVXFjf4eE8Gdw==
+  dependencies:
+    "@types/sinonjs__fake-timers" "*"
+
+"@types/sinonjs__fake-timers@*":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/@types/sinonjs__fake-timers/-/sinonjs__fake-timers-6.0.1.tgz#681df970358c82836b42f989188d133e218c458e"
+  integrity sha512-yYezQwGWty8ziyYLdZjwxyMb0CZR49h8JALHGrxjQHWlqGgc8kLdHEgWrgL0uZ29DMvEVBDnHU2Wg36zKSIUtA==
 
 "@types/sizzle@*":
   version "2.3.2"
@@ -777,11 +791,6 @@ array-flatten@^2.1.0:
   resolved "https://registry.yarnpkg.com/array-flatten/-/array-flatten-2.1.2.tgz#24ef80a28c1a893617e2149b0c6d0d788293b099"
   integrity sha512-hNfzcOV8W4NdualtqBFPyVO+54DSJuZGY9qT4pRroB6S9e3iiido2ISIC5h9R2sPJ8H3FHCIiEnsv1lPXO3KtQ==
 
-array-from@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/array-from/-/array-from-2.1.1.tgz#cfe9d8c26628b9dc5aecc62a9f5d8f1f352c1195"
-  integrity sha1-z+nYwmYoudxa7MYqn12PHzUsEZU=
-
 array-includes@^3.0.3:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/array-includes/-/array-includes-3.1.1.tgz#cdd67e6852bdf9c1215460786732255ed2459348"
@@ -2749,11 +2758,16 @@ diff@3.3.1:
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.3.1.tgz#aa8567a6eed03c531fc89d3f711cd0e5259dec75"
   integrity sha512-MKPHZDMB0o6yHyDryUOScqZibp914ksXwAMYMTHj6KO8UeKsRYNJD3oNCKjTqZon+V488P7N/HzXF8t7ZR95ww==
 
-diff@^3.1.0, diff@^3.2.0:
+diff@^3.2.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
   integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
 
+diff@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+  integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
+
 diffie-hellman@^5.0.0:
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.3.tgz#40e8ee98f55a2149607146921c63e1ae5f3d2875"
@@ -5945,18 +5959,6 @@ loglevel@^1.4.1:
   resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.6.7.tgz#b3e034233188c68b889f5b862415306f565e2c56"
   integrity sha512-cY2eLFrQSAfVPhCgH1s7JI73tMbg9YC3v3+ZHVW67sBS7UxWzNEk/ZBbSfLykBWHp33dqqtOv82gjhKEi81T/A==
 
-lolex@^2.2.0:
-  version "2.7.5"
-  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.7.5.tgz#113001d56bfc7e02d56e36291cc5c413d1aa0733"
-  integrity sha512-l9x0+1offnKKIzYVjyXU2SiwhXDLekRzKyhnbyldPHvC7BvLPVpdNUNR2KeMAiCN2D/kLNttZgQD5WjSxuBx3Q==
-
-lolex@^5.0.1:
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/lolex/-/lolex-5.1.2.tgz#953694d098ce7c07bc5ed6d0e42bc6c0c6d5a367"
-  integrity sha512-h4hmjAvHTmd+25JSwrtTIuwbKdwg5NzZVRMLn9saij4SZaepCrTCxPr35H/3bjwfMJtN+t3CX8672UIkglz28A==
-  dependencies:
-    "@sinonjs/commons" "^1.7.0"
-
 long@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/long/-/long-4.0.0.tgz#9a7b71cfb7d361a194ea555241c92f7468d5bf28"
@@ -6543,15 +6545,15 @@ neo-async@^2.5.0, neo-async@^2.6.0:
   resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.1.tgz#ac27ada66167fa8849a6addd837f6b189ad2081c"
   integrity sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw==
 
-nise@^1.2.0:
-  version "1.5.3"
-  resolved "https://registry.yarnpkg.com/nise/-/nise-1.5.3.tgz#9d2cfe37d44f57317766c6e9408a359c5d3ac1f7"
-  integrity sha512-Ymbac/94xeIrMf59REBPOv0thr+CJVFMhrlAkW/gjCIE58BGQdCj0x7KRCb3yz+Ga2Rz3E9XXSvUyyxqqhjQAQ==
+nise@^4.0.1:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-4.0.3.tgz#9f79ff02fa002ed5ffbc538ad58518fa011dc913"
+  integrity sha512-EGlhjm7/4KvmmE6B/UFsKh7eHykRl9VH+au8dduHLCyWUO/hr7+N+WtTvDUwc9zHuM1IaIJs/0lQ6Ag1jDkQSg==
   dependencies:
-    "@sinonjs/formatio" "^3.2.1"
+    "@sinonjs/commons" "^1.7.0"
+    "@sinonjs/fake-timers" "^6.0.0"
     "@sinonjs/text-encoding" "^0.7.1"
     just-extend "^4.0.2"
-    lolex "^5.0.1"
     path-to-regexp "^1.7.0"
 
 node-dir@^0.1.10:
@@ -8932,11 +8934,6 @@ safe-regex@^1.1.0:
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
   integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
 
-samsam@1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/samsam/-/samsam-1.3.0.tgz#8d1d9350e25622da30de3e44ba692b5221ab7c50"
-  integrity sha512-1HwIYD/8UlOtFS3QO3w7ey+SdSDFE4HRNLZoZRYVQefrOY3l17epswImeB1ijgJFQJodIaHcwkp3r/myBjFVbg==
-
 sanitize-filename@^1.6.2, sanitize-filename@^1.6.3:
   version "1.6.3"
   resolved "https://registry.yarnpkg.com/sanitize-filename/-/sanitize-filename-1.6.3.tgz#755ebd752045931977e30b2025d340d7c9090378"
@@ -9187,18 +9184,18 @@ single-line-log@^1.1.2:
   dependencies:
     string-width "^1.0.1"
 
-sinon@4.4.2:
-  version "4.4.2"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.4.2.tgz#c4c41d4bd346e1d33594daec2d5df0548334fc65"
-  integrity sha512-cpOHpnRyY3Dk9dTHBYMfVBB0HUCSKIpxW07X6OGW2NiYPovs4AkcL8Q8MzecbAROjbfRA9esJCmlZgikxDz7DA==
-  dependencies:
-    "@sinonjs/formatio" "^2.0.0"
-    diff "^3.1.0"
-    lodash.get "^4.4.2"
-    lolex "^2.2.0"
-    nise "^1.2.0"
-    supports-color "^5.1.0"
-    type-detect "^4.0.5"
+sinon@9.0.2:
+  version "9.0.2"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.0.2.tgz#b9017e24633f4b1c98dfb6e784a5f0509f5fd85d"
+  integrity sha512-0uF8Q/QHkizNUmbK3LRFqx5cpTttEVXudywY9Uwzy8bTfZUhljZ7ARzSxnRHWYWtVTeh4Cw+tTb3iU21FQVO9A==
+  dependencies:
+    "@sinonjs/commons" "^1.7.2"
+    "@sinonjs/fake-timers" "^6.0.1"
+    "@sinonjs/formatio" "^5.0.1"
+    "@sinonjs/samsam" "^5.0.3"
+    diff "^4.0.2"
+    nise "^4.0.1"
+    supports-color "^7.1.0"
 
 slash@^1.0.0:
   version "1.0.0"
@@ -10103,6 +10100,11 @@ ts-loader@4.1.0:
     micromatch "^3.1.4"
     semver "^5.0.1"
 
+ts-mock-imports@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/ts-mock-imports/-/ts-mock-imports-1.3.0.tgz#ed9b743349f3c27346afe5b7454ffd2bcaa2302d"
+  integrity sha512-cCrVcRYsp84eDvPict0ZZD/D7ppQ0/JSx4ve6aEU8DjlsaWRJWV6ADMovp2sCuh6pZcduLFoIYhKTDU2LARo7Q==
+
 tslib@^1.8.0, tslib@^1.8.1:
   version "1.11.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.1.tgz#eb15d128827fbee2841549e171f45ed338ac7e35"
@@ -10184,7 +10186,7 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
-type-detect@4.0.8, type-detect@^4.0.0, type-detect@^4.0.5, type-detect@^4.0.8:
+type-detect@4.0.8, type-detect@^4.0.0, type-detect@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
   integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==