diff --git a/types/twilio-common/index.d.ts b/types/twilio-common/index.d.ts
new file mode 100644
index 0000000000..2ad8b73ea4
--- /dev/null
+++ b/types/twilio-common/index.d.ts
@@ -0,0 +1,24 @@
+// Type definitions for twilio-common 0.1
+// Project: https://github.com/twilio/twilio-common.js
+// Definitions by: William Lohan <https://github.com/gatimus>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { EventEmitter } from 'events';
+
+export class AccessManager extends EventEmitter {
+    readonly expires?: Date;
+
+    readonly identity?: string;
+
+    readonly isExpired: boolean;
+
+    readonly token: string;
+
+    constructor(initialToken: string);
+
+    updateToken(newToken: string): Promise<AccessManager>;
+
+    on(type: 'error', listener: (error: Error) => void): this;
+
+    on(type: 'tokenExpired' | 'tokenWillExpire' | 'tokenUpdated', listener: (manager: AccessManager) => void): this;
+}
diff --git a/types/twilio-common/tsconfig.json b/types/twilio-common/tsconfig.json
new file mode 100644
index 0000000000..3653f40f71
--- /dev/null
+++ b/types/twilio-common/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "twilio-common-tests.ts"
+    ]
+}
diff --git a/types/twilio-common/tslint.json b/types/twilio-common/tslint.json
new file mode 100644
index 0000000000..c2e987daf6
--- /dev/null
+++ b/types/twilio-common/tslint.json
@@ -0,0 +1,6 @@
+{
+    "extends": "dtslint/dt.json",
+    "rules": {
+        "only-arrow-functions": false
+    }
+}
diff --git a/types/twilio-common/twilio-common-tests.ts b/types/twilio-common/twilio-common-tests.ts
new file mode 100644
index 0000000000..688be12c9a
--- /dev/null
+++ b/types/twilio-common/twilio-common-tests.ts
@@ -0,0 +1,22 @@
+// https://www.twilio.com/docs/chat/access-token-lifecycle#javascript
+import { AccessManager } from 'twilio-common';
+
+function generateToken(): string {
+    return 'SOME_TOKEN';
+}
+
+const token = generateToken();
+
+const accessManager = new AccessManager(token);
+const chatClient = { updateToken: (token: string) => {} }; // mock for test
+
+accessManager.on('tokenUpdated', function(am) {
+    // get new token from AccessManager and pass it to the library instance
+    chatClient.updateToken(am.token);
+});
+
+accessManager.on('tokenExpired', function() {
+    // generate new token here and set it to the accessManager
+    const updatedToken = generateToken();
+    accessManager.updateToken(updatedToken);
+});