diff --git a/Makefile b/Makefile
deleted file mode 100644
index 5f6c4b98b..000000000
--- a/Makefile
+++ /dev/null
@@ -1,20 +0,0 @@
-
-help: ## print this message
-	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
-
-build: ## update the browser build (engine.io.js)
-	@./node_modules/.bin/gulp build
-
-test: ## run tests either in the browser or in Node.js, based on the `BROWSERS` variable
-	@./node_modules/.bin/gulp test
-
-test-node: ## run tests in Node.js
-	@./node_modules/.bin/gulp test-node
-
-test-zuul: ## run tests in the browser
-	@./node_modules/.bin/gulp test-zuul
-
-test-cov: ## run tests with coverage in Node.js
-	@./node_modules/.bin/gulp test-cov
-
-.PHONY: help test test-node test-zuul test-cov
diff --git a/gulpfile.js b/gulpfile.js
deleted file mode 100644
index 88d09ebe4..000000000
--- a/gulpfile.js
+++ /dev/null
@@ -1,113 +0,0 @@
-const gulp = require('gulp');
-const mocha = require('gulp-mocha');
-const istanbul = require('gulp-istanbul');
-const webpack = require('webpack-stream');
-const child = require('child_process');
-const help = require('gulp-task-listing');
-const del = require('del');
-const eslint = require('gulp-eslint');
-
-gulp.task('help', help);
-
-// //////////////////////////////////////
-// BUILDING
-// //////////////////////////////////////
-
-const BUILD_TARGET_DIR = './';
-
-gulp.task('default', ['build']);
-
-gulp.task('build', function () {
-  return gulp.src('lib/**/*.js')
-    .pipe(webpack(require('./support/webpack.config.js')))
-    .pipe(gulp.dest(BUILD_TARGET_DIR));
-});
-
-// //////////////////////////////////////
-// TESTING
-// //////////////////////////////////////
-
-const TEST_FILE = './test/index.js';
-const MOCHA_OPTS = {
-  reporter: 'dot',
-  require: ['./test/support/server.js'],
-  bail: true
-};
-const FILES_TO_CLEAN = [
-  'test/support/public/engine.io.js'
-];
-
-gulp.task('test', [], function () {
-  if (process.env.hasOwnProperty('BROWSERS')) {
-    return testZuul();
-  } else {
-    return testNode();
-  }
-});
-
-gulp.task('lint', function () {
-  return gulp.src([
-    '*.js',
-    'lib/**/*.js',
-    'test/**/*.js',
-    '!engine.io.js'
-  ])
-    .pipe(eslint())
-    .pipe(eslint.format())
-    .pipe(eslint.failAfterError());
-});
-
-gulp.task('test-node', testNode);
-gulp.task('test-zuul', testZuul);
-
-function testNode () {
-  return gulp.src(TEST_FILE, { read: false })
-    .pipe(mocha(MOCHA_OPTS))
-    // following lines to fix gulp-mocha not terminating (see gulp-mocha webpage)
-    .once('error', function (err) {
-      console.error(err.stack);
-      cleanFiles(FILES_TO_CLEAN);
-      process.exit(1);
-    })
-    .once('end', function () {
-      cleanFiles(FILES_TO_CLEAN);
-      process.exit();
-    });
-}
-
-// runs zuul through shell process
-function testZuul () {
-  const ZUUL_CMD = './node_modules/zuul/bin/zuul';
-  const zuulChild = child.spawn(ZUUL_CMD, [TEST_FILE], { stdio: 'inherit' });
-  zuulChild.on('exit', function (code) {
-    cleanFiles(FILES_TO_CLEAN);
-    process.exit(code);
-  });
-}
-
-function cleanFiles (globArray) {
-  return del.sync(globArray);
-}
-
-gulp.task('istanbul-pre-test', function () {
-  return gulp.src(['lib/**/*.js'])
-    // Covering files
-    .pipe(istanbul())
-    // Force `require` to return covered files
-    .pipe(istanbul.hookRequire());
-});
-
-gulp.task('test-cov', ['istanbul-pre-test'], function () {
-  return gulp.src(TEST_FILE)
-    .pipe(mocha(MOCHA_OPTS))
-    .pipe(istanbul.writeReports())
-    .once('error', function (err) {
-      cleanFiles(FILES_TO_CLEAN);
-      console.error(err.stack);
-      process.exit(1);
-    })
-    .once('end', function () {
-      cleanFiles(FILES_TO_CLEAN);
-      process.exit();
-    });
-});
diff --git a/package-lock.json b/package-lock.json
index 35faa1888..8ba6801c3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1070,12 +1070,6 @@
         "negotiator": "0.6.2"
       }
     },
-    "acorn": {
-      "version": "4.0.13",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-4.0.13.tgz",
-      "integrity": "sha1-EFSVrlNh1pe9GVyCUZLhrX8lN4c=",
-      "dev": true
-    },
     "acorn-jsx": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.1.0.tgz",
@@ -1142,43 +1136,12 @@
       "integrity": "sha512-RO1ibKvd27e6FEShVFfPALuHI3WjSVNeK5FIsmme/LYRNxjKuNj+Dt7bucLa6NdSv3JcVTyMlm9kGR84z1XpaQ==",
       "dev": true
     },
-    "align-text": {
-      "version": "0.1.4",
-      "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
-      "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
-      "dev": true,
-      "requires": {
-        "kind-of": "^3.0.2",
-        "longest": "^1.0.1",
-        "repeat-string": "^1.5.2"
-      },
-      "dependencies": {
-        "kind-of": {
-          "version": "3.2.2",
-          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
-          "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-          "dev": true,
-          "requires": {
-            "is-buffer": "^1.1.5"
-          }
-        }
-      }
-    },
     "amdefine": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz",
       "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
       "dev": true
     },
-    "ansi-cyan": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-cyan/-/ansi-cyan-0.1.1.tgz",
-      "integrity": "sha1-U4rlKK+JgvKK4w2G8vF0VtJgmHM=",
-      "dev": true,
-      "requires": {
-        "ansi-wrap": "0.1.0"
-      }
-    },
     "ansi-escapes": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-4.3.0.tgz",
@@ -1188,42 +1151,6 @@
         "type-fest": "^0.8.1"
       }
     },
-    "ansi-gray": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-gray/-/ansi-gray-0.1.1.tgz",
-      "integrity": "sha1-KWLPVOyXksSFEKPetSRDaGHvclE=",
-      "dev": true,
-      "requires": {
-        "ansi-wrap": "0.1.0"
-      }
-    },
-    "ansi-red": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-red/-/ansi-red-0.1.1.tgz",
-      "integrity": "sha1-jGOPnRCAgAo1PJwoyKgcpHBdlGw=",
-      "dev": true,
-      "requires": {
-        "ansi-wrap": "0.1.0"
-      }
-    },
-    "ansi-regex": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
-    },
-    "ansi-styles": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-      "dev": true
-    },
-    "ansi-wrap": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-wrap/-/ansi-wrap-0.1.0.tgz",
-      "integrity": "sha1-qCJQ3bABXponyoLoLqYDu/pF768=",
-      "dev": true
-    },
     "anymatch": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
@@ -1376,12 +1303,6 @@
         }
       }
     },
-    "archy": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/archy/-/archy-1.0.0.tgz",
-      "integrity": "sha1-+cjBN1fMHde8N5rHeyxipcKGjEA=",
-      "dev": true
-    },
     "argparse": {
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
@@ -1409,30 +1330,12 @@
       "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
       "dev": true
     },
-    "array-differ": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/array-differ/-/array-differ-1.0.0.tgz",
-      "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE=",
-      "dev": true
-    },
-    "array-each": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/array-each/-/array-each-1.0.1.tgz",
-      "integrity": "sha1-p5SvDAWrF1KEbudTofIRoFugxE8=",
-      "dev": true
-    },
     "array-filter": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/array-filter/-/array-filter-0.0.1.tgz",
       "integrity": "sha1-fajPLiZijtcygDWB/SH2fKzS7uw=",
       "dev": true
     },
-    "array-find-index": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.2.tgz",
-      "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
-      "dev": true
-    },
     "array-flatten": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
@@ -1451,21 +1354,6 @@
       "integrity": "sha1-FziZ0//Rx9k4PkR5Ul2+J4yrXys=",
       "dev": true
     },
-    "array-slice": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-1.1.0.tgz",
-      "integrity": "sha512-B1qMD3RBP7O8o0H2KbrXDyB0IccejMF15+87Lvlor12ONPRHP6gTjXMNkt/d3ZuOGbAe66hFmaCfECI24Ufp6w==",
-      "dev": true
-    },
-    "array-union": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
-      "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
-      "dev": true,
-      "requires": {
-        "array-uniq": "^1.0.1"
-      }
-    },
     "array-uniq": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
@@ -1483,12 +1371,6 @@
       "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz",
       "integrity": "sha512-wGUIVQXuehL5TCqQun8OW81jGzAWycqzFF8lFp+GOM5BXLYj3bKNsYC4daB7n6XjCqxQA/qgTJ+8ANR3acjrog=="
     },
-    "arrify": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
-      "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
-      "dev": true
-    },
     "asn1": {
       "version": "0.1.11",
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.1.11.tgz",
@@ -1769,12 +1651,6 @@
         "tweetnacl": "^0.14.3"
       }
     },
-    "beeper": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/beeper/-/beeper-1.1.1.tgz",
-      "integrity": "sha1-5tXqjF2tABMEpwsiY4RH9pyy+Ak=",
-      "dev": true
-    },
     "better-assert": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/better-assert/-/better-assert-1.0.2.tgz",
@@ -1783,12 +1659,6 @@
         "callsite": "1.0.0"
       }
     },
-    "big.js": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/big.js/-/big.js-3.2.0.tgz",
-      "integrity": "sha512-+hN/Zh2D08Mx65pZ/4g5bsmNiZUuChDiQfTUQ7qJr4/kuopCr88xZsAXv6mBoZEsUI4OuGHlX59qE94K2mMW8Q==",
-      "dev": true
-    },
     "binary": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/binary/-/binary-0.3.0.tgz",
@@ -2535,15 +2405,6 @@
       "integrity": "sha1-skV5w77U1tOWru5tmorn9Ugqt7s=",
       "dev": true
     },
-    "bufferstreams": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/bufferstreams/-/bufferstreams-1.1.3.tgz",
-      "integrity": "sha512-HaJnVuslRF4g2kSDeyl++AaVizoitCpL9PglzCYwy0uHHyvWerfvEb8jWmYbF1z4kiVFolGomnxSGl+GUQp2jg==",
-      "dev": true,
-      "requires": {
-        "readable-stream": "^2.0.2"
-      }
-    },
     "builtin-status-codes": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/builtin-status-codes/-/builtin-status-codes-3.0.0.tgz",
@@ -2642,30 +2503,6 @@
       "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
       "dev": true
     },
-    "camelcase": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-      "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
-      "dev": true
-    },
-    "camelcase-keys": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/camelcase-keys/-/camelcase-keys-2.1.0.tgz",
-      "integrity": "sha1-MIvur/3ygRkFHvodkyITyRuPkuc=",
-      "dev": true,
-      "requires": {
-        "camelcase": "^2.0.0",
-        "map-obj": "^1.0.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-2.1.1.tgz",
-          "integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8=",
-          "dev": true
-        }
-      }
-    },
     "caniuse-lite": {
       "version": "1.0.30001020",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001020.tgz",
@@ -2678,16 +2515,6 @@
       "integrity": "sha1-gWfBq4OX+1u5X5bSjlqBxQ8kesQ=",
       "dev": true
     },
-    "center-align": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/center-align/-/center-align-0.1.3.tgz",
-      "integrity": "sha1-qg0yYptu6XIgBBHL1EYckHvCt60=",
-      "dev": true,
-      "requires": {
-        "align-text": "^0.1.3",
-        "lazy-cache": "^1.0.3"
-      }
-    },
     "chainsaw": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/chainsaw/-/chainsaw-0.1.0.tgz",
@@ -2697,19 +2524,6 @@
         "traverse": ">=0.3.0 <0.4"
       }
     },
-    "chalk": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
-      "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
-      "dev": true,
-      "requires": {
-        "ansi-styles": "^2.2.1",
-        "escape-string-regexp": "^1.0.2",
-        "has-ansi": "^2.0.0",
-        "strip-ansi": "^3.0.0",
-        "supports-color": "^2.0.0"
-      }
-    },
     "char-split": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/char-split/-/char-split-0.2.0.tgz",
@@ -2792,12 +2606,6 @@
         "safe-buffer": "^5.0.1"
       }
     },
-    "circular-json": {
-      "version": "0.3.3",
-      "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.3.tgz",
-      "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==",
-      "dev": true
-    },
     "class-utils": {
       "version": "0.3.6",
       "resolved": "https://registry.npmjs.org/class-utils/-/class-utils-0.3.6.tgz",
@@ -2836,35 +2644,6 @@
       "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
       "dev": true
     },
-    "cliui": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-3.2.0.tgz",
-      "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
-      "dev": true,
-      "requires": {
-        "string-width": "^1.0.1",
-        "strip-ansi": "^3.0.1",
-        "wrap-ansi": "^2.0.0"
-      }
-    },
-    "clone": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/clone/-/clone-1.0.4.tgz",
-      "integrity": "sha1-2jCcwmPfFZlMaIypAheco8fNfH4=",
-      "dev": true
-    },
-    "clone-stats": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-0.0.1.tgz",
-      "integrity": "sha1-uI+UqCzzi4eR1YBG6kAprYjKmdE=",
-      "dev": true
-    },
-    "code-point-at": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
-      "dev": true
-    },
     "collection-visit": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/collection-visit/-/collection-visit-1.0.0.tgz",
@@ -2890,12 +2669,6 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
-    "color-support": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/color-support/-/color-support-1.1.3.tgz",
-      "integrity": "sha512-qiBjkpbMLO/HL68y+lh4q0/O1MZFj2RX6X/KmMa3+gJD3z+WwI1ZzDHysvqHGS3mP6mznPckpXmw1nI9cJjyRg==",
-      "dev": true
-    },
     "colors": {
       "version": "0.6.2",
       "resolved": "https://registry.npmjs.org/colors/-/colors-0.6.2.tgz",
@@ -3375,29 +3148,6 @@
         }
       }
     },
-    "cross-spawn": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-5.1.0.tgz",
-      "integrity": "sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=",
-      "dev": true,
-      "requires": {
-        "lru-cache": "^4.0.1",
-        "shebang-command": "^1.2.0",
-        "which": "^1.2.9"
-      },
-      "dependencies": {
-        "lru-cache": {
-          "version": "4.1.5",
-          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.5.tgz",
-          "integrity": "sha512-sWZlbEP2OsHNkXrMl5GYk/jKk70MBng6UU4YI/qGDYbgf6YbP4EvmqISbXCoJiRKs+1bSpFHVgQxvJ17F2li5g==",
-          "dev": true,
-          "requires": {
-            "pseudomap": "^1.0.2",
-            "yallist": "^2.1.2"
-          }
-        }
-      }
-    },
     "cryptiles": {
       "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-0.2.2.tgz",
@@ -3424,37 +3174,12 @@
       "integrity": "sha1-gsGMJGH3QRTvFsE1IkrQuRRMoS8=",
       "dev": true
     },
-    "currently-unhandled": {
-      "version": "0.4.1",
-      "resolved": "https://registry.npmjs.org/currently-unhandled/-/currently-unhandled-0.4.1.tgz",
-      "integrity": "sha1-mI3zP+qxke95mmE2nddsF635V+o=",
-      "dev": true,
-      "requires": {
-        "array-find-index": "^1.0.1"
-      }
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-              "dev": true
-            }
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-          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-1.2.0.tgz",
-          "integrity": "sha1-XIgDbPVl5d8FVYv8kR+GVt8hiIQ=",
-          "dev": true,
-          "requires": {
-            "clone": "^1.0.0",
-            "clone-stats": "^0.0.1",
-            "replace-ext": "0.0.1"
-          }
-        },
-        "watchpack": {
-          "version": "0.2.9",
-          "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-0.2.9.tgz",
-          "integrity": "sha1-Yuqkq15bo1/fwBgnVibjwPXj+ws=",
-          "dev": true,
-          "requires": {
-            "async": "^0.9.0",
-            "chokidar": "^1.0.0",
-            "graceful-fs": "^4.1.2"
-          },
-          "dependencies": {
-            "async": {
-              "version": "0.9.2",
-              "resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
-              "integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0=",
-              "dev": true
-            }
-          }
-        },
-        "webpack": {
-          "version": "1.15.0",
-          "resolved": "https://registry.npmjs.org/webpack/-/webpack-1.15.0.tgz",
-          "integrity": "sha1-T/MfU9sDM55VFkqdRo7gMklo/pg=",
-          "dev": true,
-          "requires": {
-            "acorn": "^3.0.0",
-            "async": "^1.3.0",
-            "clone": "^1.0.2",
-            "enhanced-resolve": "~0.9.0",
-            "interpret": "^0.6.4",
-            "loader-utils": "^0.2.11",
-            "memory-fs": "~0.3.0",
-            "mkdirp": "~0.5.0",
-            "node-libs-browser": "^0.7.0",
-            "optimist": "~0.6.0",
-            "supports-color": "^3.1.0",
-            "tapable": "~0.1.8",
-            "uglify-js": "~2.7.3",
-            "watchpack": "^0.2.1",
-            "webpack-core": "~0.6.9"
-          }
-        },
-        "wordwrap": {
-          "version": "0.0.2",
-          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
-          "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=",
-          "dev": true
-        },
-        "yargs": {
-          "version": "3.10.0",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
-          "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
-          "dev": true,
-          "requires": {
-            "camelcase": "^1.0.2",
-            "cliui": "^2.1.0",
-            "decamelize": "^1.0.0",
-            "window-size": "0.1.0"
-          }
-        }
-      }
-    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -13946,18 +10930,6 @@
         "isexe": "^2.0.0"
       }
     },
-    "which-module": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/which-module/-/which-module-1.0.0.tgz",
-      "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=",
-      "dev": true
-    },
-    "window-size": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
-      "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0=",
-      "dev": true
-    },
     "word-wrap": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
@@ -13979,16 +10951,6 @@
         "errno": "~0.1.7"
       }
     },
-    "wrap-ansi": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
-      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
-      "dev": true,
-      "requires": {
-        "string-width": "^1.0.1",
-        "strip-ansi": "^3.0.1"
-      }
-    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
@@ -14018,12 +10980,6 @@
         "async-limiter": "~1.0.0"
       }
     },
-    "xml-escape": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/xml-escape/-/xml-escape-1.0.0.tgz",
-      "integrity": "sha1-AJY9aXsq3wwYXE4E5zF0upsojrI=",
-      "dev": true
-    },
     "xml2js": {
       "version": "0.4.23",
       "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.23.tgz",
@@ -14051,18 +11007,6 @@
       "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
       "dev": true
     },
-    "y18n": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
-      "dev": true
-    },
-    "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
-      "dev": true
-    },
     "yamljs": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/yamljs/-/yamljs-0.1.4.tgz",
@@ -14124,36 +11068,6 @@
         }
       }
     },
-    "yargs": {
-      "version": "6.6.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-6.6.0.tgz",
-      "integrity": "sha1-eC7CHvQDNF+DCoCMo9UTr1YGUgg=",
-      "dev": true,
-      "requires": {
-        "camelcase": "^3.0.0",
-        "cliui": "^3.2.0",
-        "decamelize": "^1.1.1",
-        "get-caller-file": "^1.0.1",
-        "os-locale": "^1.4.0",
-        "read-pkg-up": "^1.0.1",
-        "require-directory": "^2.1.1",
-        "require-main-filename": "^1.0.1",
-        "set-blocking": "^2.0.0",
-        "string-width": "^1.0.2",
-        "which-module": "^1.0.0",
-        "y18n": "^3.2.1",
-        "yargs-parser": "^4.2.0"
-      }
-    },
-    "yargs-parser": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-4.2.1.tgz",
-      "integrity": "sha1-KczqwNxPA8bIe0qfIX3RjJ90hxw=",
-      "dev": true,
-      "requires": {
-        "camelcase": "^3.0.0"
-      }
-    },
     "yeast": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
diff --git a/package.json b/package.json
index 06e4a972b..7a65a57f3 100644
--- a/package.json
+++ b/package.json
@@ -41,32 +41,23 @@
     "babel-eslint": "^10.0.3",
     "babel-loader": "^8.0.6",
     "blob": "^0.0.4",
-    "concat-stream": "^1.6.0",
-    "del": "^2.2.2",
-    "derequire": "^2.0.6",
     "engine.io": "git+https://github.com/socketio/engine.io.git#v4",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.9.0",
     "expect.js": "^0.3.1",
     "express": "4.15.2",
-    "gulp": "3.9.1",
-    "gulp-eslint": "1.1.1",
-    "gulp-file": "^0.3.0",
-    "gulp-istanbul": "^1.1.1",
-    "gulp-mocha": "^4.3.0",
-    "gulp-task-listing": "1.0.1",
-    "istanbul": "^0.4.5",
     "mocha": "^3.2.0",
     "prettier": "^1.19.1",
     "webpack": "^4.41.5",
     "webpack-cli": "^3.3.10",
-    "webpack-stream": "^3.2.0",
     "zuul": "3.11.1",
     "zuul-builder-webpack": "^1.2.0",
     "zuul-ngrok": "4.0.0"
   },
   "scripts": {
-    "test": "npm run lint && npm run format:check && gulp test",
+    "test": "npm run lint && npm run format:check && if test \"$BROWSERS\" = \"1\" ; then npm run test:browser; else npm run test:node; fi",
+    "test:node": "mocha --reporter dot --require test/support/server.js test/index.js",
+    "test:browser": "zuul test/index.js",
     "build": "webpack --config ./support/webpack.config.js",
     "format:check": "prettier --check 'lib/**/*.js' 'test/**/*.js'",
     "format:fix": "prettier --write 'lib/**/*.js' 'test/**/*.js'",