diff --git a/src/broadcast.ts b/src/broadcast.ts
index 5de66fd2..23872cc2 100644
--- a/src/broadcast.ts
+++ b/src/broadcast.ts
@@ -1,13 +1,13 @@
 
 import * as _ from 'lodash'
-import {RippleAPI} from './api'
+import {RippleAPI, APIOptions} from './api'
 
 class RippleAPIBroadcast extends RippleAPI {
 
   ledgerVersion: number | undefined = undefined
   private _apis: RippleAPI[]
 
-  constructor(servers, options) {
+  constructor(servers, options: APIOptions = {}) {
     super(options)
 
     const apis: RippleAPI[] = servers.map(server => new RippleAPI(
diff --git a/test/api-test.ts b/test/api-test.ts
index 2c6a9f0f..6917aa52 100644
--- a/test/api-test.ts
+++ b/test/api-test.ts
@@ -4,9 +4,10 @@ import _ from 'lodash';
 import { RippleAPI } from 'ripple-api';
 import { RecursiveData } from 'ripple-api/ledger/utils';
 import binary from 'ripple-binary-codec';
-import { requests, responses } from './fixtures';
-import addresses from './fixtures/addresses';
-import hashes from './fixtures/hashes';
+import requests from './fixtures/requests';
+import responses from './fixtures/responses';
+import addresses from './fixtures/addresses.json';
+import hashes from './fixtures/hashes.json';
 import ledgerClosed from './fixtures/rippled/ledger-close-newer.json';
 import setupAPI from './setup-api';
 const {validate, schemaValidator} = RippleAPI._PRIVATE;
@@ -4609,7 +4610,7 @@ describe('RippleAPI', function () {
       });
     }
     return utils.getRecursive(getter, 10).then(() => {
-      assert(false, 'Should th row Error');
+      assert(false, 'Should throw Error');
     }).catch(error => {
       assert(error instanceof Error);
     });
diff --git a/test/broadcast-api-test.ts b/test/broadcast-api-test.ts
index 36efb573..a84c4ecf 100644
--- a/test/broadcast-api-test.ts
+++ b/test/broadcast-api-test.ts
@@ -1,7 +1,7 @@
 import _ from 'lodash';
 import assert from 'assert-diff';
 import setupAPI from './setup-api';
-import {responses} from './fixtures';
+import responses from './fixtures/responses';
 import ledgerClosed from './fixtures/rippled/ledger-close.json';
 import {RippleAPI} from 'ripple-api';
 const schemaValidator = RippleAPI._PRIVATE.schemaValidator;
diff --git a/test/fixtures/addresses.js b/test/fixtures/addresses.js
deleted file mode 100644
index cf5a0f8f..00000000
--- a/test/fixtures/addresses.js
+++ /dev/null
@@ -1,13 +0,0 @@
-'use strict';
-module.exports = {
-  ACCOUNT: 'r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59',
-  ACCOUNT_X: 'X7AcgcsBL6XDcUb289X4mJ8djcdyKaB5hJDWMArnXr61cqZ',
-  ACCOUNT_T: 'T719a5UwUCnEs54UsxG9CJYYDhwmFCqkr7wxCcNcfZ6p5GZ',
-  OTHER_ACCOUNT: 'rpZc4mVfWUif9CRoHRKKcmhu1nx2xktxBo',
-  THIRD_ACCOUNT: 'rwBYyfufTzk77zUSKEu4MvixfarC35av1J',
-  FOURTH_ACCOUNT: 'rJnZ4YHCUsHvQu7R6mZohevKJDHFzVD6Zr',
-  ISSUER: 'rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM',
-  NOTFOUND: 'rajTAg3hon5Lcu1RxQQPxTgHvqfhc1EaUS',
-  SECRET: 'shsWGZcmZz6YsWWmcnpfr6fLTdtFV',
-  SOURCE_LOW_FUNDS: 'rhVgDEfS1r1fLyRUZCpab4TdowZcAJwHy2'
-};
diff --git a/test/fixtures/addresses.json b/test/fixtures/addresses.json
new file mode 100644
index 00000000..585be161
--- /dev/null
+++ b/test/fixtures/addresses.json
@@ -0,0 +1,12 @@
+{
+  "ACCOUNT": "r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59",
+  "ACCOUNT_X": "X7AcgcsBL6XDcUb289X4mJ8djcdyKaB5hJDWMArnXr61cqZ",
+  "ACCOUNT_T": "T719a5UwUCnEs54UsxG9CJYYDhwmFCqkr7wxCcNcfZ6p5GZ",
+  "OTHER_ACCOUNT": "rpZc4mVfWUif9CRoHRKKcmhu1nx2xktxBo",
+  "THIRD_ACCOUNT": "rwBYyfufTzk77zUSKEu4MvixfarC35av1J",
+  "FOURTH_ACCOUNT": "rJnZ4YHCUsHvQu7R6mZohevKJDHFzVD6Zr",
+  "ISSUER": "rMH4UxPrbuMa1spCBR98hLLyNJp4d8p4tM",
+  "NOTFOUND": "rajTAg3hon5Lcu1RxQQPxTgHvqfhc1EaUS",
+  "SECRET": "shsWGZcmZz6YsWWmcnpfr6fLTdtFV",
+  "SOURCE_LOW_FUNDS": "rhVgDEfS1r1fLyRUZCpab4TdowZcAJwHy2"
+}
\ No newline at end of file
diff --git a/test/fixtures/hashes.js b/test/fixtures/hashes.js
deleted file mode 100644
index 07ddd56b..00000000
--- a/test/fixtures/hashes.js
+++ /dev/null
@@ -1,12 +0,0 @@
-'use strict';
-
-module.exports = {
-  VALID_TRANSACTION_HASH:
-    'F4AB442A6D4CBB935D66E1DA7309A5FC71C7143ED4049053EC14E3875B0CF9BF',
-  NOTFOUND_TRANSACTION_HASH:
-    'D7FA4BBD23FAA88FC208BD194EC435D7A1FD9E2E8887B9C17A811A0739AA4AE4',
-  INVALID_TRANSACTION_HASH:
-    'XF4AB442A6D4CBB935D66E1DA7309A5FC71C7143ED4049053EC14E3875B0CF9BF',
-  ORDER_HASH:
-    '71AE74B03DE3B9A06C559AD4D173A362D96B7D2A5AA35F56B9EF21543D627F34'
-};
diff --git a/test/fixtures/hashes.json b/test/fixtures/hashes.json
new file mode 100644
index 00000000..4183968b
--- /dev/null
+++ b/test/fixtures/hashes.json
@@ -0,0 +1,10 @@
+{
+  "VALID_TRANSACTION_HASH":
+    "F4AB442A6D4CBB935D66E1DA7309A5FC71C7143ED4049053EC14E3875B0CF9BF",
+  "NOTFOUND_TRANSACTION_HASH":
+    "D7FA4BBD23FAA88FC208BD194EC435D7A1FD9E2E8887B9C17A811A0739AA4AE4",
+  "INVALID_TRANSACTION_HASH":
+    "XF4AB442A6D4CBB935D66E1DA7309A5FC71C7143ED4049053EC14E3875B0CF9BF",
+  "ORDER_HASH":
+    "71AE74B03DE3B9A06C559AD4D173A362D96B7D2A5AA35F56B9EF21543D627F34"
+}
diff --git a/test/fixtures/index.js b/test/fixtures/index.js
deleted file mode 100644
index 9f0d0980..00000000
--- a/test/fixtures/index.js
+++ /dev/null
@@ -1,7 +0,0 @@
-'use strict';
-
-module.exports = {
-  responses: require('./responses'),
-  requests: require('./requests'),
-  rippled: require('./rippled')
-};
diff --git a/test/integration/broadcast-test.js b/test/integration/broadcast-test.ts
similarity index 84%
rename from test/integration/broadcast-test.js
rename to test/integration/broadcast-test.ts
index fca74216..61fefc31 100644
--- a/test/integration/broadcast-test.js
+++ b/test/integration/broadcast-test.ts
@@ -1,5 +1,4 @@
-'use strict';
-const {RippleAPIBroadcast} = require('../../src');
+import {RippleAPIBroadcast} from '../../src';
 
 function main() {
   const servers = ['wss://s1.ripple.com', 'wss://s2.ripple.com'];
diff --git a/test/integration/connection-test.js b/test/integration/connection-test.ts
similarity index 94%
rename from test/integration/connection-test.js
rename to test/integration/connection-test.ts
index ecbb54b0..20ebbc4d 100644
--- a/test/integration/connection-test.js
+++ b/test/integration/connection-test.ts
@@ -1,5 +1,4 @@
-'use strict';
-const Connection = require('../../src/common/connection');
+import Connection from '../../src/common/connection';
 
 const request1 = {
   command: 'server_info'
diff --git a/test/integration/integration-test.js b/test/integration/integration-test.ts
similarity index 96%
rename from test/integration/integration-test.js
rename to test/integration/integration-test.ts
index ab29670c..30fc7243 100644
--- a/test/integration/integration-test.js
+++ b/test/integration/integration-test.ts
@@ -1,15 +1,12 @@
-/* eslint-disable max-nested-callbacks */
-/* eslint-disable max-params */
-'use strict';
-const _ = require('lodash');
-const assert = require('assert');
-const errors = require('../../src/common/errors');
-const wallet = require('./wallet');
-const requests = require('../fixtures/requests');
-const RippleAPI = require('ripple-api').RippleAPI;
-const {isValidAddress} = require('ripple-address-codec');
-const {isValidSecret} = require('../../src/common');
-const {payTo, ledgerAccept} = require('./utils');
+import _ from 'lodash';
+import assert from 'assert';
+import wallet from './wallet';
+import requests from '../fixtures/requests';
+import {RippleAPI} from 'ripple-api';
+import {isValidAddress} from 'ripple-address-codec';
+import {payTo, ledgerAccept} from './utils';
+import { errors } from 'ripple-api/common';
+import { isValidSecret } from 'ripple-api/common/utils';
 
 
 // how long before each test case times out
@@ -71,7 +68,7 @@ function testTransaction(testcase, type, lastClosedLedgerVersion, prepared,
   });
 }
 
-function setup(server = 'wss://s1.ripple.com') {
+function setup(this: any, server = 'wss://s1.ripple.com') {
   this.api = new RippleAPI({server});
   console.log('CONNECTING...');
   return this.api.connect().then(() => {
@@ -167,11 +164,11 @@ function setupAccounts(testcase) {
   return promise;
 }
 
-function teardown() {
+function teardown(this: any) {
   return this.api.disconnect();
 }
 
-function suiteSetup() {
+function suiteSetup(this: any) {
   this.transactions = [];
 
   return setup.bind(this)(serverUrl)
diff --git a/test/mock-rippled.js b/test/mock-rippled.ts
similarity index 96%
rename from test/mock-rippled.js
rename to test/mock-rippled.ts
index 2a13d0d6..800074cb 100644
--- a/test/mock-rippled.js
+++ b/test/mock-rippled.ts
@@ -1,17 +1,16 @@
-'use strict'; // eslint-disable-line
-const _ = require('lodash');
-const assert = require('assert');
-const WebSocketServer = require('ws').Server;
-const EventEmitter2 = require('eventemitter2').EventEmitter2;
-const fixtures = require('./fixtures/rippled');
-const addresses = require('./fixtures/addresses');
-const hashes = require('./fixtures/hashes');
-const transactionsResponse = require('./fixtures/rippled/account-tx');
-const accountLinesResponse = require('./fixtures/rippled/account-lines');
-const accountObjectsResponse = require('./fixtures/rippled/account-objects');
-const fullLedger = require('./fixtures/rippled/ledger-full-38129.json');
-const { getFreePort } = require('./utils/net-utils');
-const fs = require('fs');
+import _ from 'lodash';
+import fs from 'fs';
+import assert from 'assert';
+import {Server as WebSocketServer} from 'ws';
+import {EventEmitter2} from 'eventemitter2';
+import fixtures from './fixtures/rippled';
+import addresses from './fixtures/addresses.json';
+import hashes from './fixtures/hashes.json';
+import transactionsResponse from './fixtures/rippled/account-tx';
+import accountLinesResponse from './fixtures/rippled/account-lines';
+import accountObjectsResponse from './fixtures/rippled/account-objects';
+import fullLedger from './fixtures/rippled/ledger-full-38129.json';
+import { getFreePort } from './utils/net-utils';
 
 function isUSD(json) {
   return json === 'USD' || json === '0000000000000000000000005553440000000000';
@@ -49,8 +48,17 @@ function createLedgerResponse(request, response) {
   return JSON.stringify(newResponse);
 }
 
-module.exports = function createMockRippled(port) {
-  const mock = new WebSocketServer({ port: port });
+interface CustomWebSocketServer extends WebSocketServer, EventEmitter2 {
+  expectedRequests: any
+  expect: any
+  config: any
+  socket: any
+  onAny: any
+  event: any
+}
+
+export function createMockRippled(port) {
+  const mock = new WebSocketServer({ port: port }) as CustomWebSocketServer;
   _.assign(mock, EventEmitter2.prototype);
 
   const close = mock.close;
@@ -73,7 +81,7 @@ module.exports = function createMockRippled(port) {
     mock.expectedRequests = expectedRequests;
   };
 
-  mock.on('connection', function (conn) {
+  mock.on('connection', function (this: CustomWebSocketServer, conn: any) {
     if (mock.config.breakNextConnection) {
       mock.config.breakNextConnection = false;
       conn.terminate();
@@ -94,7 +102,7 @@ module.exports = function createMockRippled(port) {
 
   mock.config = {};
 
-  mock.onAny(function () {
+  mock.onAny(function (this: CustomWebSocketServer) {
     if (this.event.indexOf('request_') !== 0) {
       return;
     }
diff --git a/test/mocked-server.js b/test/mocked-server.ts
similarity index 81%
rename from test/mocked-server.js
rename to test/mocked-server.ts
index 7772c861..249b6f97 100644
--- a/test/mocked-server.js
+++ b/test/mocked-server.ts
@@ -1,9 +1,5 @@
-'use strict';
-
-
 const port = 34371;
-
-const createMockRippled = require('./mock-rippled');
+import {createMockRippled} from './mock-rippled';
 
 function main() {
   if (global.describe) {
diff --git a/test/setup-api-web.js b/test/setup-api-web.ts
similarity index 79%
rename from test/setup-api-web.js
rename to test/setup-api-web.ts
index eceddde4..ba878435 100644
--- a/test/setup-api-web.js
+++ b/test/setup-api-web.ts
@@ -1,13 +1,10 @@
-/* eslint-disable max-nested-callbacks */
-'use strict'; // eslint-disable-line 
-
-const {RippleAPI, RippleAPIBroadcast} = require('ripple-api');
-const ledgerClosed = require('./fixtures/rippled/ledger-close');
+import {RippleAPI, RippleAPIBroadcast} from 'ripple-api';
+import ledgerClosed from './fixtures/rippled/ledger-close.json';
 
 const port = 34371;
 const baseUrl = 'ws://testripple.circleci.com:';
 
-function setup(port_ = port) {
+function setup(this: any, port_ = port) {
   const tapi = new RippleAPI({server: baseUrl + port_});
   return tapi.connect().then(() => {
     return tapi.connection.request({
@@ -27,7 +24,7 @@ function setup(port_ = port) {
   });
 }
 
-function setupBroadcast() {
+function setupBroadcast(this: any) {
   const servers = [port, port + 1].map(port_ => baseUrl + port_);
   this.api = new RippleAPIBroadcast(servers);
   return new Promise((resolve, reject) => {
@@ -39,14 +36,14 @@ function setupBroadcast() {
   });
 }
 
-function teardown() {
+function teardown(this: any) {
   if (this.api.isConnected()) {
     return this.api.disconnect();
   }
   return undefined;
 }
 
-module.exports = {
+export default {
   setup: setup,
   teardown: teardown,
   setupBroadcast: setupBroadcast
diff --git a/test/setup-api.js b/test/setup-api.ts
similarity index 78%
rename from test/setup-api.js
rename to test/setup-api.ts
index ba1ca82f..97fa8339 100644
--- a/test/setup-api.js
+++ b/test/setup-api.ts
@@ -1,11 +1,7 @@
-'use strict'; // eslint-disable-line 
-
-const RippleAPI = require('ripple-api').RippleAPI;
-const RippleAPIBroadcast = require('ripple-api').RippleAPIBroadcast;
-const ledgerClosed = require('./fixtures/rippled/ledger-close');
-const createMockRippled = require('./mock-rippled');
-const {getFreePort} = require('./utils/net-utils');
-
+import {RippleAPI, RippleAPIBroadcast} from 'ripple-api';
+import ledgerClosed from './fixtures/rippled/ledger-close.json';
+import {createMockRippled} from './mock-rippled';
+import {getFreePort} from './utils/net-utils';
 
 function setupMockRippledConnection(testcase, port) {
   return new Promise((resolve, reject) => {
@@ -31,19 +27,19 @@ function setupMockRippledConnectionForBroadcast(testcase, ports) {
   });
 }
 
-function setup() {
+function setup(this: any) {
   return getFreePort().then(port => {
     return setupMockRippledConnection(this, port);
   });
 }
 
-function setupBroadcast() {
+function setupBroadcast(this: any) {
   return Promise.all([getFreePort(), getFreePort()]).then(ports => {
     return setupMockRippledConnectionForBroadcast(this, ports);
   });
 }
 
-function teardown(done) {
+function teardown(this: any, done) {
   this.api.disconnect().then(() => {
     if (this.mockRippled !== undefined) {
       this.mockRippled.close();
@@ -54,7 +50,7 @@ function teardown(done) {
   }).catch(done);
 }
 
-module.exports = {
+export default {
   setup: setup,
   teardown: teardown,
   setupBroadcast: setupBroadcast,
diff --git a/test/utils/net-utils.js b/test/utils/net-utils.ts
similarity index 70%
rename from test/utils/net-utils.js
rename to test/utils/net-utils.ts
index 42f5cfad..e98ded4b 100644
--- a/test/utils/net-utils.js
+++ b/test/utils/net-utils.ts
@@ -1,14 +1,12 @@
-'use strict'; // eslint-disable-line 
-
-const net = require('net');
+import net from 'net';
 
 // using a free port instead of a constant port enables parallelization
-function getFreePort() {
+export function getFreePort() {
   return new Promise((resolve, reject) => {
     const server = net.createServer();
     let port;
     server.on('listening', function() {
-      port = server.address().port;
+      port = (server.address() as any).port;
       server.close();
     });
     server.on('close', function() {
@@ -19,8 +17,4 @@ function getFreePort() {
     });
     server.listen(0);
   });
-}
-
-module.exports = {
-  getFreePort
-};
+}
\ No newline at end of file