diff --git a/lib/js/test/test-async.js b/lib/js/test/test-async.js
index b4e9854..8c6b13e 100644
--- a/lib/js/test/test-async.js
+++ b/lib/js/test/test-async.js
@@ -30,128 +30,130 @@
 
 
 // all Languages in UTF-8
-var stringTest = "Afrikaans, Alemannisch, Aragonés, العربية, مصرى, Asturianu, Aymar aru, Azərbaycan, Башҡорт, Boarisch, Žemaitėška, Беларуская, Беларуская (тарашкевіца), Български, Bamanankan, বাংলা, Brezhoneg, Bosanski, Català, Mìng-dĕ̤ng-ngṳ̄, Нохчийн, Cebuano, ᏣᎳᎩ, Česky, Словѣ́ньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ, Чӑвашла, Cymraeg, Dansk, Zazaki, ދިވެހިބަސް, Ελληνικά, Emiliàn e rumagnòl, English, Esperanto, Español, Eesti, Euskara, فارسی, Suomi, Võro, Føroyskt, Français, Arpetan, Furlan, Frysk, Gaeilge, 贛語, Gàidhlig, Galego, Avañe'ẽ, ગુજરાતી, Gaelg, עברית, हिन्दी, Fiji Hindi, Hrvatski, Kreyòl ayisyen, Magyar, Հայերեն, Interlingua, Bahasa Indonesia, Ilokano, Ido, Íslenska, Italiano, 日本語, Lojban, Basa Jawa, ქართული, Kongo, Kalaallisut, ಕನ್ನಡ, 한국어, Къарачай-Малкъар, Ripoarisch, Kurdî, Коми, Kernewek, Кыргызча, Latina, Ladino, Lëtzebuergesch, Limburgs, Lingála, ລາວ, Lietuvių, Latviešu, Basa Banyumasan, Malagasy, Македонски, മലയാളം, मराठी, Bahasa Melayu, مازِرونی, Nnapulitano, Nedersaksisch, नेपाल भाषा, Nederlands, ‪Norsk (nynorsk)‬, ‪Norsk (bokmål)‬, Nouormand, Diné bizaad, Occitan, Иронау, Papiamentu, Deitsch, Norfuk / Pitkern, Polski, پنجابی, پښتو, Português, Runa Simi, Rumantsch, Romani, Română, Русский, Саха тыла, Sardu, Sicilianu, Scots, Sámegiella, Simple English, Slovenčina, Slovenščina, Српски / Srpski, Seeltersk, Svenska, Kiswahili, தமிழ், తెలుగు, Тоҷикӣ, ไทย, Türkmençe, Tagalog, Türkçe, Татарча/Tatarça, Українська, اردو, Tiếng Việt, Volapük, Walon, Winaray, 吴语, isiXhosa, ייִדיש, Yorùbá, Zeêuws, 中文, Bân-lâm-gú, 粵語";
+const stringTest = "Afrikaans, Alemannisch, Aragonés, العربية, مصرى, Asturianu, Aymar aru, Azərbaycan, Башҡорт, Boarisch, Žemaitėška, Беларуская, Беларуская (тарашкевіца), Български, Bamanankan, বাংলা, Brezhoneg, Bosanski, Català, Mìng-dĕ̤ng-ngṳ̄, Нохчийн, Cebuano, ᏣᎳᎩ, Česky, Словѣ́ньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ, Чӑвашла, Cymraeg, Dansk, Zazaki, ދިވެހިބަސް, Ελληνικά, Emiliàn e rumagnòl, English, Esperanto, Español, Eesti, Euskara, فارسی, Suomi, Võro, Føroyskt, Français, Arpetan, Furlan, Frysk, Gaeilge, 贛語, Gàidhlig, Galego, Avañe'ẽ, ગુજરાતી, Gaelg, עברית, हिन्दी, Fiji Hindi, Hrvatski, Kreyòl ayisyen, Magyar, Հայերեն, Interlingua, Bahasa Indonesia, Ilokano, Ido, Íslenska, Italiano, 日本語, Lojban, Basa Jawa, ქართული, Kongo, Kalaallisut, ಕನ್ನಡ, 한국어, Къарачай-Малкъар, Ripoarisch, Kurdî, Коми, Kernewek, Кыргызча, Latina, Ladino, Lëtzebuergesch, Limburgs, Lingála, ລາວ, Lietuvių, Latviešu, Basa Banyumasan, Malagasy, Македонски, മലയാളം, मराठी, Bahasa Melayu, مازِرونی, Nnapulitano, Nedersaksisch, नेपाल भाषा, Nederlands, ‪Norsk (nynorsk)‬, ‪Norsk (bokmål)‬, Nouormand, Diné bizaad, Occitan, Иронау, Papiamentu, Deitsch, Norfuk / Pitkern, Polski, پنجابی, پښتو, Português, Runa Simi, Rumantsch, Romani, Română, Русский, Саха тыла, Sardu, Sicilianu, Scots, Sámegiella, Simple English, Slovenčina, Slovenščina, Српски / Srpski, Seeltersk, Svenska, Kiswahili, தமிழ், తెలుగు, Тоҷикӣ, ไทย, Türkmençe, Tagalog, Türkçe, Татарча/Tatarça, Українська, اردو, Tiếng Việt, Volapük, Walon, Winaray, 吴语, isiXhosa, ייִדיש, Yorùbá, Zeêuws, 中文, Bân-lâm-gú, 粵語";
 
-function checkRecursively(map1, map2) {
+function checkRecursively(assert, map1, map2) {
   if (typeof map1 !== 'function' && typeof map2 !== 'function') {
     if (!map1 || typeof map1 !== 'object') {
-        equal(map1, map2);
+        assert.equal(map1, map2);
     } else {
-      for (var key in map1) {
-        checkRecursively(map1[key], map2[key]);
+      for (let key in map1) {
+        checkRecursively(assert, map1[key], map2[key]);
       }
     }
   }
 }
 
-module('Base Types');
+QUnit.module('Base Types');
 
-  asyncTest('Void', function() {
-    expect(1);
+  QUnit.test('Void', function(assert) {
+    assert.expect(1);
+    const done = assert.async();
     client.testVoid(function(result) {
-      equal(result, undefined);
-      QUnit.start();
+      assert.equal(result, undefined);
+      done();
     });
   });
 
 
-  asyncTest('String', function() {
-    expect(3);
-    QUnit.stop(2);
+  QUnit.test('String', function(assert) {
+    assert.expect(3);
+    const done = assert.async(3);
     client.testString('', function(result) {
-       equal(result, '');
-       QUnit.start();
+       assert.equal(result, '');
+       done();
     });
     client.testString(stringTest, function(result) {
-       equal(result, stringTest);
-       QUnit.start();
+       assert.equal(result, stringTest);
+       done();
     });
 
-    var specialCharacters = 'quote: \" backslash:' +
+    const specialCharacters = 'quote: \" backslash:' +
           ' forwardslash-escaped: \/ ' +
           ' backspace: \b formfeed: \f newline: \n return: \r tab: ' +
           ' now-all-of-them-together: "\\\/\b\n\r\t' +
           ' now-a-bunch-of-junk: !@#$%&()(&%$#{}{}<><><';
     client.testString(specialCharacters, function(result) {
-       equal(result, specialCharacters);
-       QUnit.start();
+       assert.equal(result, specialCharacters);
+       done();
     });
   });
-  asyncTest('Double', function() {
-    expect(4);
-    QUnit.stop(3);
+  QUnit.test('Double', function(assert) {
+    assert.expect(4);
+    const done = assert.async(4);
     client.testDouble(0, function(result) {
-       equal(result, 0);
-       QUnit.start();
+       assert.equal(result, 0);
+       done();
     });
     client.testDouble(-1, function(result) {
-       equal(result, -1);
-       QUnit.start();
+       assert.equal(result, -1);
+       done();
     });
     client.testDouble(3.14, function(result) {
-       equal(result, 3.14);
-       QUnit.start();
+       assert.equal(result, 3.14);
+       done();
     });
     client.testDouble(Math.pow(2, 60), function(result) {
-       equal(result, Math.pow(2, 60));
-       QUnit.start();
+       assert.equal(result, Math.pow(2, 60));
+       done();
     });
   });
   // TODO: add testBinary()
-  asyncTest('Byte', function() {
-    expect(2);
-    QUnit.stop();
+  QUnit.test('Byte', function(assert) {
+    assert.expect(2);
+    const done = assert.async(2);
     client.testByte(0, function(result) {
-       equal(result, 0);
-       QUnit.start();
+       assert.equal(result, 0);
+       done();
     });
     client.testByte(0x01, function(result) {
-       equal(result, 0x01);
-       QUnit.start();
+       assert.equal(result, 0x01);
+       done();
     });
   });
-  asyncTest('I32', function() {
-    expect(3);
-    QUnit.stop(2);
+  QUnit.test('I32', function(assert) {
+    assert.expect(3);
+    const done = assert.async(3);
     client.testI32(0, function(result) {
-       equal(result, 0);
-       QUnit.start();
+       assert.equal(result, 0);
+       done();
     });
     client.testI32(Math.pow(2, 30), function(result) {
-       equal(result, Math.pow(2, 30));
-       QUnit.start();
+       assert.equal(result, Math.pow(2, 30));
+       done();
     });
     client.testI32(-Math.pow(2, 30), function(result) {
-       equal(result, -Math.pow(2, 30));
-       QUnit.start();
+       assert.equal(result, -Math.pow(2, 30));
+       done();
     });
   });
-  asyncTest('I64', function() {
-    expect(3);
-    QUnit.stop(2);
+  QUnit.test('I64', function(assert) {
+    assert.expect(3);
+    const done = assert.async(3);
     client.testI64(0, function(result) {
-       equal(result, 0);
-       QUnit.start();
+       assert.equal(result, 0);
+       done();
     });
     //This is usually 2^60 but JS cannot represent anything over 2^52 accurately
     client.testI64(Math.pow(2, 52), function(result) {
-       equal(result, Math.pow(2, 52));
-       QUnit.start();
+       assert.equal(result, Math.pow(2, 52));
+       done();
     });
     client.testI64(-Math.pow(2, 52), function(result) {
-       equal(result, -Math.pow(2, 52));
-       QUnit.start();
+       assert.equal(result, -Math.pow(2, 52));
+       done();
     });
   });
 
 
 
 
-module('Structured Types');
+QUnit.module('Structured Types');
 
-  asyncTest('Struct', function() {
-    expect(5);
-    var structTestInput = new ThriftTest.Xtruct();
+  QUnit.test('Struct', function(assert) {
+    assert.expect(5);
+    const done = assert.async();
+    const structTestInput = new ThriftTest.Xtruct();
     structTestInput.string_thing = 'worked';
     structTestInput.byte_thing = 0x01;
     structTestInput.i32_thing = Math.pow(2, 30);
@@ -159,148 +161,159 @@
     structTestInput.i64_thing = Math.pow(2, 52);
 
     client.testStruct(structTestInput, function(result) {
-      equal(result.string_thing, structTestInput.string_thing);
-      equal(result.byte_thing, structTestInput.byte_thing);
-      equal(result.i32_thing, structTestInput.i32_thing);
-      equal(result.i64_thing, structTestInput.i64_thing);
-      equal(JSON.stringify(result), JSON.stringify(structTestInput));
-      QUnit.start();
+      assert.equal(result.string_thing, structTestInput.string_thing);
+      assert.equal(result.byte_thing, structTestInput.byte_thing);
+      assert.equal(result.i32_thing, structTestInput.i32_thing);
+      assert.equal(result.i64_thing, structTestInput.i64_thing);
+      assert.equal(JSON.stringify(result), JSON.stringify(structTestInput));
+      done();
     });
   });
 
-  asyncTest('Nest', function() {
-    expect(7);
-    var xtrTestInput = new ThriftTest.Xtruct();
+  QUnit.test('Nest', function(assert) {
+    assert.expect(7);
+    const done = assert.async();
+    const xtrTestInput = new ThriftTest.Xtruct();
     xtrTestInput.string_thing = 'worked';
     xtrTestInput.byte_thing = 0x01;
     xtrTestInput.i32_thing = Math.pow(2, 30);
     //This is usually 2^60 but JS cannot represent anything over 2^52 accurately
     xtrTestInput.i64_thing = Math.pow(2, 52);
 
-    var nestTestInput = new ThriftTest.Xtruct2();
+    const nestTestInput = new ThriftTest.Xtruct2();
     nestTestInput.byte_thing = 0x02;
     nestTestInput.struct_thing = xtrTestInput;
     nestTestInput.i32_thing = Math.pow(2, 15);
 
     client.testNest(nestTestInput, function(result) {
-      equal(result.byte_thing, nestTestInput.byte_thing);
-      equal(result.struct_thing.string_thing, nestTestInput.struct_thing.string_thing);
-      equal(result.struct_thing.byte_thing, nestTestInput.struct_thing.byte_thing);
-      equal(result.struct_thing.i32_thing, nestTestInput.struct_thing.i32_thing);
-      equal(result.struct_thing.i64_thing, nestTestInput.struct_thing.i64_thing);
-      equal(result.i32_thing, nestTestInput.i32_thing);
-      equal(JSON.stringify(result), JSON.stringify(nestTestInput));
-      QUnit.start();
+      assert.equal(result.byte_thing, nestTestInput.byte_thing);
+      assert.equal(result.struct_thing.string_thing, nestTestInput.struct_thing.string_thing);
+      assert.equal(result.struct_thing.byte_thing, nestTestInput.struct_thing.byte_thing);
+      assert.equal(result.struct_thing.i32_thing, nestTestInput.struct_thing.i32_thing);
+      assert.equal(result.struct_thing.i64_thing, nestTestInput.struct_thing.i64_thing);
+      assert.equal(result.i32_thing, nestTestInput.i32_thing);
+      assert.equal(JSON.stringify(result), JSON.stringify(nestTestInput));
+      done();
     });
   });
 
-  asyncTest('Map', function() {
-    expect(3);
-    var mapTestInput = {7: 77, 8: 88, 9: 99};
+  QUnit.test('Map', function(assert) {
+    assert.expect(3);
+    const done = assert.async();
+    const mapTestInput = {7: 77, 8: 88, 9: 99};
 
     client.testMap(mapTestInput, function(result) {
-      for (var key in result) {
-        equal(result[key], mapTestInput[key]);
+      for (let key in result) {
+        assert.equal(result[key], mapTestInput[key]);
       }
-      QUnit.start();
+      done();
     });
   });
 
-  asyncTest('StringMap', function() {
-    expect(6);
-    var mapTestInput = {
+  QUnit.test('StringMap', function(assert) {
+    assert.expect(6);
+    const done = assert.async();
+    const mapTestInput = {
       'a': '123', 'a b': 'with spaces ', 'same': 'same', '0': 'numeric key',
       'longValue': stringTest, stringTest: 'long key'
     };
 
     client.testStringMap(mapTestInput, function(result) {
-      for (var key in result) {
-        equal(result[key], mapTestInput[key]);
+      for (let key in result) {
+        assert.equal(result[key], mapTestInput[key]);
       }
-      QUnit.start();
+      done();
     });
   });
 
-  asyncTest('Set', function() {
-    expect(1);
-    var setTestInput = [1, 2, 3];
+  QUnit.test('Set', function(assert) {
+    assert.expect(1);
+    const done = assert.async();
+    const setTestInput = [1, 2, 3];
     client.testSet(setTestInput, function(result) {
-      ok(result, setTestInput);
-      QUnit.start();
+      assert.ok(result, setTestInput);
+      done();
     });
   });
 
-  asyncTest('List', function() {
-    expect(1);
-    var listTestInput = [1, 2, 3];
+  QUnit.test('List', function(assert) {
+    assert.expect(1);
+    const done = assert.async();
+    const listTestInput = [1, 2, 3];
     client.testList(listTestInput, function(result) {
-      ok(result, listTestInput);
-      QUnit.start();
+      assert.ok(result, listTestInput);
+      done();
     });
   });
 
-  asyncTest('Enum', function() {
-    expect(1);
+  QUnit.test('Enum', function(assert) {
+    assert.expect(1);
+    const done = assert.async();
     client.testEnum(ThriftTest.Numberz.ONE, function(result) {
-      equal(result, ThriftTest.Numberz.ONE);
-      QUnit.start();
+      assert.equal(result, ThriftTest.Numberz.ONE);
+      done();
     });
   });
 
-  asyncTest('TypeDef', function() {
-    expect(1);
+  QUnit.test('TypeDef', function(assert) {
+    assert.expect(1);
+    const done = assert.async();
     client.testTypedef(69, function(result) {
-      equal(result, 69);
-      QUnit.start();
+      assert.equal(result, 69);
+      done();
     });
   });
 
 
-module('deeper!');
+QUnit.module('deeper!');
 
-  asyncTest('MapMap', function() {
-    expect(16);
-    var mapMapTestExpectedResult = {
+  QUnit.test('MapMap', function(assert) {
+    assert.expect(16);
+    const done = assert.async();
+    const mapMapTestExpectedResult = {
       '4': {'1': 1, '2': 2, '3': 3, '4': 4},
       '-4': {'-4': -4, '-3': -3, '-2': -2, '-1': -1}
     };
 
     client.testMapMap(1, function(result) {
-      for (var key in result) {
-        for (var key2 in result[key]) {
-          equal(result[key][key2], mapMapTestExpectedResult[key][key2]);
+      for (let key in result) {
+        for (let key2 in result[key]) {
+          assert.equal(result[key][key2], mapMapTestExpectedResult[key][key2]);
         }
       }
-      checkRecursively(result, mapMapTestExpectedResult);
-      QUnit.start();
+      checkRecursively(assert, result, mapMapTestExpectedResult);
+      done();
     });
   });
 
 
-module('Exception');
+QUnit.module('Exception');
 
-  asyncTest('Xception', function() {
-    expect(2);
+  QUnit.test('Xception', function(assert) {
+    assert.expect(2);
+    const done = assert.async();
     client.testException('Xception', function(e) {
-      equal(e.errorCode, 1001);
-      equal(e.message, 'Xception');
-      QUnit.start();
+      assert.equal(e.errorCode, 1001);
+      assert.equal(e.message, 'Xception');
+      done();
     });
   });
 
-  asyncTest('no Exception', 0, function() {
-    expect(1);
+  QUnit.test('no Exception', function(assert) {
+    assert.expect(1);
+    const done = assert.async();
     client.testException('no Exception', function(e) {
-      ok(!e);
-      QUnit.start();
+      assert.ok(!e);
+      done();
     });
   });
 
-module('Insanity');
+QUnit.module('Insanity');
 
-  asyncTest('testInsanity', function() {
-    expect(24);
-    var insanity = {
+  QUnit.test('testInsanity', function(assert) {
+    assert.expect(24);
+    const done = assert.async();
+    const insanity = {
       '1': {
         '2': {
           'userMap': { '5': 5, '8': 8 },
@@ -338,19 +351,20 @@
       '2': { '6': { 'userMap': null, 'xtructs': null } }
     };
     client.testInsanity(new ThriftTest.Insanity(), function(res) {
-      ok(res, JSON.stringify(res));
-      ok(insanity, JSON.stringify(insanity));
-      checkRecursively(res, insanity);
-      QUnit.start();
+      assert.ok(res, JSON.stringify(res));
+      assert.ok(insanity, JSON.stringify(insanity));
+      checkRecursively(assert, res, insanity);
+      done();
     });
   });
 
-module('Oneway');
+QUnit.module('Oneway');
 
-  asyncTest('testOneway', function() {
-    expect(1);
+  QUnit.test('testOneway', function(assert) {
+    assert.expect(1);
+    const done = assert.async();
     client.testOneway(1, function(result) {
-      equal(result, undefined);
-      QUnit.start();
+      assert.equal(result, undefined);
+      done();
     });
-  });
\ No newline at end of file
+  });