diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..3d33db8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,33 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  test-node:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    strategy:
+      matrix:
+        node-version:
+          - 20
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index e64616c..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-language: node_js
-node_js:
-- "6.14"
-- "7.10"
-- "8.12"
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..d046b54
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,884 @@
+{
+  "name": "@socket.io/component-emitter",
+  "version": "4.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@socket.io/component-emitter",
+      "version": "4.0.0",
+      "license": "MIT",
+      "devDependencies": {
+        "mocha": "*",
+        "should": "*"
+      }
+    },
+    "node_modules/@ungap/promise-all-settled": {
+      "version": "1.1.2",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/ansi-colors": {
+      "version": "4.1.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/ansi-regex": {
+      "version": "5.0.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/ansi-styles": {
+      "version": "4.3.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "color-convert": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/anymatch": {
+      "version": "3.1.2",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "normalize-path": "^3.0.0",
+        "picomatch": "^2.0.4"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/argparse": {
+      "version": "2.0.1",
+      "dev": true,
+      "license": "Python-2.0"
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/binary-extensions": {
+      "version": "2.2.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/braces": {
+      "version": "3.0.2",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "fill-range": "^7.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/browser-stdout": {
+      "version": "1.3.1",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/camelcase": {
+      "version": "6.2.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/chalk": {
+      "version": "4.1.2",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^4.1.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/chalk?sponsor=1"
+      }
+    },
+    "node_modules/chalk/node_modules/supports-color": {
+      "version": "7.2.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/chokidar": {
+      "version": "3.5.2",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "anymatch": "~3.1.2",
+        "braces": "~3.0.2",
+        "glob-parent": "~5.1.2",
+        "is-binary-path": "~2.1.0",
+        "is-glob": "~4.0.1",
+        "normalize-path": "~3.0.0",
+        "readdirp": "~3.6.0"
+      },
+      "engines": {
+        "node": ">= 8.10.0"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.2"
+      }
+    },
+    "node_modules/cliui": {
+      "version": "7.0.4",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "string-width": "^4.2.0",
+        "strip-ansi": "^6.0.0",
+        "wrap-ansi": "^7.0.0"
+      }
+    },
+    "node_modules/color-convert": {
+      "version": "2.0.1",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "color-name": "~1.1.4"
+      },
+      "engines": {
+        "node": ">=7.0.0"
+      }
+    },
+    "node_modules/color-name": {
+      "version": "1.1.4",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/debug": {
+      "version": "4.3.2",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/debug/node_modules/ms": {
+      "version": "2.1.2",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/decamelize": {
+      "version": "4.0.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/diff": {
+      "version": "5.0.0",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=0.3.1"
+      }
+    },
+    "node_modules/emoji-regex": {
+      "version": "8.0.0",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/escalade": {
+      "version": "3.1.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/escape-string-regexp": {
+      "version": "4.0.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/fill-range": {
+      "version": "7.0.1",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "to-regex-range": "^5.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/find-up": {
+      "version": "5.0.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "locate-path": "^6.0.0",
+        "path-exists": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/flat": {
+      "version": "5.0.2",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "bin": {
+        "flat": "cli.js"
+      }
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/get-caller-file": {
+      "version": "2.0.5",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": "6.* || 8.* || >= 10.*"
+      }
+    },
+    "node_modules/glob": {
+      "version": "7.1.7",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/glob-parent": {
+      "version": "5.1.2",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "is-glob": "^4.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/growl": {
+      "version": "1.10.5",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=4.x"
+      }
+    },
+    "node_modules/has-flag": {
+      "version": "4.0.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/he": {
+      "version": "1.2.0",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "he": "bin/he"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/is-binary-path": {
+      "version": "2.1.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "binary-extensions": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/is-extglob": {
+      "version": "2.1.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/is-fullwidth-code-point": {
+      "version": "3.0.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/is-glob": {
+      "version": "4.0.3",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "is-extglob": "^2.1.1"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/is-number": {
+      "version": "7.0.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.12.0"
+      }
+    },
+    "node_modules/is-plain-obj": {
+      "version": "2.1.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/is-unicode-supported": {
+      "version": "0.1.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/isexe": {
+      "version": "2.0.0",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/js-yaml": {
+      "version": "4.1.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "argparse": "^2.0.1"
+      },
+      "bin": {
+        "js-yaml": "bin/js-yaml.js"
+      }
+    },
+    "node_modules/locate-path": {
+      "version": "6.0.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "p-locate": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/log-symbols": {
+      "version": "4.1.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "chalk": "^4.1.0",
+        "is-unicode-supported": "^0.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/minimatch": {
+      "version": "3.0.4",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/mocha": {
+      "version": "9.1.2",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@ungap/promise-all-settled": "1.1.2",
+        "ansi-colors": "4.1.1",
+        "browser-stdout": "1.3.1",
+        "chokidar": "3.5.2",
+        "debug": "4.3.2",
+        "diff": "5.0.0",
+        "escape-string-regexp": "4.0.0",
+        "find-up": "5.0.0",
+        "glob": "7.1.7",
+        "growl": "1.10.5",
+        "he": "1.2.0",
+        "js-yaml": "4.1.0",
+        "log-symbols": "4.1.0",
+        "minimatch": "3.0.4",
+        "ms": "2.1.3",
+        "nanoid": "3.1.25",
+        "serialize-javascript": "6.0.0",
+        "strip-json-comments": "3.1.1",
+        "supports-color": "8.1.1",
+        "which": "2.0.2",
+        "workerpool": "6.1.5",
+        "yargs": "16.2.0",
+        "yargs-parser": "20.2.4",
+        "yargs-unparser": "2.0.0"
+      },
+      "bin": {
+        "_mocha": "bin/_mocha",
+        "mocha": "bin/mocha"
+      },
+      "engines": {
+        "node": ">= 12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/mochajs"
+      }
+    },
+    "node_modules/ms": {
+      "version": "2.1.3",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/nanoid": {
+      "version": "3.1.25",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+      }
+    },
+    "node_modules/normalize-path": {
+      "version": "3.0.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/p-limit": {
+      "version": "3.1.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "yocto-queue": "^0.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/p-locate": {
+      "version": "5.0.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "p-limit": "^3.0.2"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/path-exists": {
+      "version": "4.0.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/picomatch": {
+      "version": "2.3.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
+    "node_modules/randombytes": {
+      "version": "2.1.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "safe-buffer": "^5.1.0"
+      }
+    },
+    "node_modules/readdirp": {
+      "version": "3.6.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "picomatch": "^2.2.1"
+      },
+      "engines": {
+        "node": ">=8.10.0"
+      }
+    },
+    "node_modules/require-directory": {
+      "version": "2.1.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/safe-buffer": {
+      "version": "5.2.1",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/serialize-javascript": {
+      "version": "6.0.0",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "randombytes": "^2.1.0"
+      }
+    },
+    "node_modules/should": {
+      "version": "13.2.3",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "should-equal": "^2.0.0",
+        "should-format": "^3.0.3",
+        "should-type": "^1.4.0",
+        "should-type-adaptors": "^1.0.1",
+        "should-util": "^1.0.0"
+      }
+    },
+    "node_modules/should-equal": {
+      "version": "2.0.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "should-type": "^1.4.0"
+      }
+    },
+    "node_modules/should-format": {
+      "version": "3.0.3",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "should-type": "^1.3.0",
+        "should-type-adaptors": "^1.0.1"
+      }
+    },
+    "node_modules/should-type": {
+      "version": "1.4.0",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/should-type-adaptors": {
+      "version": "1.1.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "should-type": "^1.3.0",
+        "should-util": "^1.0.0"
+      }
+    },
+    "node_modules/should-util": {
+      "version": "1.0.1",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/string-width": {
+      "version": "4.2.3",
+      "dev": true,
+      "license": "MIT",
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