diff --git a/.zuul.yml b/.zuul.yml
index c43e74d54..7fca42909 100644
--- a/.zuul.yml
+++ b/.zuul.yml
@@ -22,3 +22,8 @@ scripts:
 tunnel:
   type: ngrok
   proto: tcp
+browserify:
+  - external: long
+  - require: ./lib/tape-adapter
+    expose: intimidate
+    entry: true
diff --git a/lib/deep-equal/LICENSE b/lib/deep-equal/LICENSE
new file mode 100644
index 000000000..30a59ef86
--- /dev/null
+++ b/lib/deep-equal/LICENSE
@@ -0,0 +1,18 @@
+This software is released under the MIT license:
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/lib/deep-equal/README.md b/lib/deep-equal/README.md
new file mode 100644
index 000000000..c37ebd91e
--- /dev/null
+++ b/lib/deep-equal/README.md
@@ -0,0 +1,3 @@
+Forked [node-deep-equal](https://github.com/substack/node-deep-equal)@1.0.1 with monkey-patched buffer equality.
+
+License: MIT. Derived largely from node's assert module.
diff --git a/lib/deep-equal/index.js b/lib/deep-equal/index.js
new file mode 100644
index 000000000..a2fba8b81
--- /dev/null
+++ b/lib/deep-equal/index.js
@@ -0,0 +1,95 @@
+var pSlice = Array.prototype.slice;
+var objectKeys = require('./lib/keys.js');
+var isArguments = require('./lib/is_arguments.js');
+
+var deepEqual = module.exports = function (actual, expected, opts) {
+  if (!opts) opts = {};
+  // 7.1. All identical values are equivalent, as determined by ===.
+  if (actual === expected) {
+    return true;
+
+  } else if (actual instanceof Date && expected instanceof Date) {
+    return actual.getTime() === expected.getTime();
+
+  // 7.3. Other pairs that do not both pass typeof value == 'object',
+  // equivalence is determined by ==.
+  } else if (!actual || !expected || typeof actual != 'object' && typeof expected != 'object') {
+    return opts.strict ? actual === expected : actual == expected;
+
+  // 7.4. For all other Object pairs, including Array objects, equivalence is
+  // determined by having the same number of owned properties (as verified
+  // with Object.prototype.hasOwnProperty.call), the same set of keys
+  // (although not necessarily the same order), equivalent values for every
+  // corresponding key, and an identical 'prototype' property. Note: this
+  // accounts for both named and indexed properties on Arrays.
+  } else {
+    return objEquiv(actual, expected, opts);
+  }
+}
+
+function isUndefinedOrNull(value) {
+  return value === null || value === undefined;
+}
+
+function isBuffer (x) {
+  if (!x || typeof x !== 'object' || typeof x.length !== 'number') return false;
+  // MONKEY PATCH: Support buffer, Uint8Array and Array alike
+  /* if (typeof x.copy !== 'function' || typeof x.slice !== 'function') {
+    return false;
+  } */
+  if (x.length > 0 && typeof x[0] !== 'number') return false;
+  return true;
+}
+
+function objEquiv(a, b, opts) {
+  var i, key;
+  if (isUndefinedOrNull(a) || isUndefinedOrNull(b))
+    return false;
+  // an identical 'prototype' property.
+  if (a.prototype !== b.prototype) return false;
+  //~~~I've managed to break Object.keys through screwy arguments passing.
+  //   Converting to array solves the problem.
+  if (isArguments(a)) {
+    if (!isArguments(b)) {
+      return false;
+    }
+    a = pSlice.call(a);
+    b = pSlice.call(b);
+    return deepEqual(a, b, opts);
+  }
+  if (isBuffer(a)) {
+    if (!isBuffer(b)) {
+      return false;
+    }
+    if (a.length !== b.length) return false;
+    for (i = 0; i < a.length; i++) {
+      if (a[i] !== b[i]) return false;
+    }
+    return true;
+  }
+  try {
+    var ka = objectKeys(a),
+        kb = objectKeys(b);
+  } catch (e) {//happens when one is a string literal and the other isn't
+    return false;
+  }
+  // having the same number of owned properties (keys incorporates
+  // hasOwnProperty)
+  if (ka.length != kb.length)
+    return false;
+  //the same set of keys (although not necessarily the same order),
+  ka.sort();
+  kb.sort();
+  //~~~cheap key test
+  for (i = ka.length - 1; i >= 0; i--) {
+    if (ka[i] != kb[i])
+      return false;
+  }
+  //equivalent values for every corresponding key, and
+  //~~~possibly expensive deep test
+  for (i = ka.length - 1; i >= 0; i--) {
+    key = ka[i];
+    if (!deepEqual(a[key], b[key], opts)) return false;
+  }
+  return typeof a === typeof b;
+}
\ No newline at end of file
diff --git a/lib/deep-equal/lib/is_arguments.js b/lib/deep-equal/lib/is_arguments.js
new file mode 100644
index 000000000..e3fbc1fc5
--- /dev/null
+++ b/lib/deep-equal/lib/is_arguments.js
@@ -0,0 +1,20 @@
+var supportsArgumentsClass = (function(){
+  return Object.prototype.toString.call(arguments)
+})() == '[object Arguments]';
+
+exports = module.exports = supportsArgumentsClass ? supported : unsupported;
+
+exports.supported = supported;
+function supported(object) {
+  return Object.prototype.toString.call(object) == '[object Arguments]';
+};
+
+exports.unsupported = unsupported;
+function unsupported(object){
+  return object &&
+    typeof object == 'object' &&
+    typeof object.length == 'number' &&
+    Object.prototype.hasOwnProperty.call(object, 'callee') &&
+    !Object.prototype.propertyIsEnumerable.call(object, 'callee') ||
+    false;
+};
\ No newline at end of file
diff --git a/lib/deep-equal/lib/keys.js b/lib/deep-equal/lib/keys.js
new file mode 100644
index 000000000..6f04fcdbd
--- /dev/null
+++ b/lib/deep-equal/lib/keys.js
@@ -0,0 +1,9 @@
+exports = module.exports = typeof Object.keys === 'function'
+  ? Object.keys : shim;
+
+exports.shim = shim;
+function shim (obj) {
+  var keys = [];
+  for (var key in obj) keys.push(key);
+  return keys;
+}
\ No newline at end of file
diff --git a/lib/tape-adapter.js b/lib/tape-adapter.js
new file mode 100644
index 000000000..c3744ff62
--- /dev/null
+++ b/lib/tape-adapter.js
@@ -0,0 +1,22 @@
+var tape = require("tape");
+
+var Test = tape.Test;
+
+// some ancient environments have invalid own properties on buffers so that deepEqual doesn't work.
+// the following uses a monkey-patched deepEqual implementation for all kinds of number arrays.
+
+var deepEqual = require("./deep-equal");
+
+Test.prototype.deepEqual
+= Test.prototype.deepEquals
+= Test.prototype.isEquivalent
+= Test.prototype.same
+= function (a, b, msg, extra) {
+    this._assert(deepEqual(a, b, { strict: true }), {
+        message : msg || 'should be equivalent',
+        operator : 'deepEqual',
+        actual : a,
+        expected : b,
+        extra : extra
+    });
+};
diff --git a/package.json b/package.json
index 1ba75489d..4d0aa697c 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "pages": "node scripts/pages",
     "prepublish": "node scripts/prepublish",
     "prof": "node bench/prof",
-    "test": "tape tests/*.js | tap-spec",
+    "test": "tape -r ./lib/tape-adapter tests/*.js | tap-spec",
     "types": "node bin/pbts --main --global protobuf --out index.d.ts src && tsc tests/typescript.ts --lib es2015 --noEmit && tsc tests/data/test.ts --lib es2015 --noEmit",
     "zuul": "zuul --ui tape --no-coverage --concurrency 4 -- tests/*.js",
     "zuul-local": "zuul --ui tape --concurrency 1 --local 8080 --disable-tunnel -- tests/*.js",
diff --git a/tests/basics.js b/tests/basics.js
index 2b6fb7fc4..994b6311a 100644
--- a/tests/basics.js
+++ b/tests/basics.js
@@ -30,8 +30,7 @@ tape.test("google.protobuf.Any type", function(test) {
             }, "should be populated with the contents we provided");
 
             var writer = Any.encode(any),
-                buf,
-                msg;
+                buf;
 
             function verifyEncode(test, buf) {
                 test.equal(buf[0]    , 1 << 3 | 2, "a tag with id 1, wire type 2");
@@ -53,7 +52,7 @@ tape.test("google.protobuf.Any type", function(test) {
 
             test.test("should decode", function(test) {
 
-                msg = Any.decode(buf);
+                var msg = Any.decode(buf);
 
                 test.deepEqual(msg, any, "an equal message");
 
@@ -77,7 +76,7 @@ tape.test("google.protobuf.Any type", function(test) {
 
             test.test("should decodeDelimited", function(test) {
 
-                msg = Any.decodeDelimited(buf);
+                var msg = Any.decodeDelimited(buf);
                 test.deepEqual(msg, any, "an equal message");
 
                 test.end();
diff --git a/tests/index.js b/tests/index.js
new file mode 100644
index 000000000..e69de29bb