Prettier

.vscode/extensions.json

@@ -1,5 +1,3 @@
 {
-    "recommendations": [
+  "recommendations": ["orta.vscode-jest"]
-        "orta.vscode-jest"
-    ]
 }

.vscode/launch.json

@@ -1,20 +1,16 @@
 {
-    // Use IntelliSense to learn about possible attributes.
+  // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
+  // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
+  "version": "0.2.0",
-    "configurations": [
+  "configurations": [
-        {
+    {
-            "type": "pwa-node",
+      "type": "pwa-node",
-            "request": "launch",
+      "request": "launch",
-            "name": "Launch Program",
+      "name": "Launch Program",
-            "skipFiles": [
+      "skipFiles": ["<node_internals>/**"],
-                "<node_internals>/**"
+      "program": "${workspaceFolder}/dist/index.js",
-            ],
+      "outFiles": ["${workspaceFolder}/**/*.js"]
-            "program": "${workspaceFolder}/dist/index.js",
+    }
-            "outFiles": [
+  ]
-                "${workspaceFolder}/**/*.js"
-            ]
-        }
-    ]
 }

.vscode/settings.json

@@ -1,3 +1,3 @@
 {
-    "editor.tabSize": 2
+  "editor.tabSize": 2
 }

.vscode/tasks.json

@@ -1,18 +1,16 @@
 {
-	"version": "2.0.0",
+  "version": "2.0.0",
-	"tasks": [
+  "tasks": [
-		{
+    {
-			"type": "typescript",
+      "type": "typescript",
-			"tsconfig": "tsconfig.json",
+      "tsconfig": "tsconfig.json",
-			"option": "watch",
+      "option": "watch",
-			"problemMatcher": [
+      "problemMatcher": ["$tsc-watch"],
-				"$tsc-watch"
+      "group": {
-			],
+        "kind": "build",
-			"group": {
+        "isDefault": true
-				"kind": "build",
+      },
-				"isDefault": true
+      "label": "tsc: watch - tsconfig.json"
-			},
+    }
-			"label": "tsc: watch - tsconfig.json"
+  ]
-		}
-	]
 }

BENNC_PROTOCOL_SPEC.md

@@ -12,11 +12,11 @@
 
 ## Connection Endpoints
 
-| Protocol | Endpoint |
+| Protocol        | Endpoint                          |
-|----------|----------|
+| --------------- | --------------------------------- |
-| TCP | `chat.3t.network:10009` |
+| TCP             | `chat.3t.network:10009`           |
 | WebSocket (TLS) | `wss://chat.3t.network:443/BENNC` |
-| WebSocket | `ws://chat.3t.network:80/BENNC` |
+| WebSocket       | `ws://chat.3t.network:80/BENNC`   |
 
 ## Core Requirements
 
@@ -30,6 +30,7 @@
 ## Message Structure
 
 **Client → Server:**
+
 ```
 ┌─────────────┬─────────────┬─────────────────────────┐
 │ Message Type│ Length      │ Data                    │
@@ -38,6 +39,7 @@
 ```
 
 **Server → Client:**
+
 ```
 ┌─────────────┬─────────────┬─────────────┬─────────────────────┐
 │ Message Type│ Sender ID   │ Length      │ Data                │
@@ -45,7 +47,7 @@
 └─────────────┴─────────────┴─────────────┴─────────────────────┘
 ```
 
-*Sender ID is randomly generated per connection to identify message source.*
+_Sender ID is randomly generated per connection to identify message source._
 
 ## Encryption Implementation
 
@@ -67,22 +69,23 @@
 
 ## Message Types Reference
 
-| ID | Name | Subscribable | Encrypted | Compressed | Purpose |
+| ID     | Name               | Subscribable | Encrypted | Compressed | Purpose                       |
-|----|------|--------------|-----------|------------|---------|
+| ------ | ------------------ | ------------ | --------- | ---------- | ----------------------------- |
-| 0x0000 | Subscribe | ❌ | ❌ | ❌ | Subscribe to message type |
+| 0x0000 | Subscribe          | ❌           | ❌        | ❌         | Subscribe to message type     |
-| 0x0001 | Basic Message | ✅ | ✅ | ❌ | Chat messages |
+| 0x0001 | Basic Message      | ✅           | ✅        | ❌         | Chat messages                 |
-| 0x0002 | Request User Data | ✅ | ✅ | ❌ | Request user info |
+| 0x0002 | Request User Data  | ✅           | ✅        | ❌         | Request user info             |
-| 0x0003 | User Data Response | ✅ | ✅ | ❌ | Respond with user info |
+| 0x0003 | User Data Response | ✅           | ✅        | ❌         | Respond with user info        |
-| 0x0005 | Keepalive | ❌ | ❌ | ❌ | Prevent connection timeout |
+| 0x0005 | Keepalive          | ❌           | ❌        | ❌         | Prevent connection timeout    |
-| 0x0006 | Advanced Text | ✅ | ✅ | ✅ | Long/rich text messages |
+| 0x0006 | Advanced Text      | ✅           | ✅        | ✅         | Long/rich text messages       |
-| 0x0007 | Edit Advanced Text | ✅ | ✅ | ✅ | Edit/delete advanced text |
+| 0x0007 | Edit Advanced Text | ✅           | ✅        | ✅         | Edit/delete advanced text     |
-| 0xFFFF | Unsubscribe | ❌ | ❌ | ❌ | Unsubscribe from message type |
+| 0xFFFF | Unsubscribe        | ❌           | ❌        | ❌         | Unsubscribe from message type |
 
 ---
 
 ## Message Type Specifications
 
 ### Subscribe (0x0000)
+
 Subscribe to receive messages of specified type. Must resubscribe after disconnect.
 
 **Data:** Message type to subscribe to (2 bytes, big-endian)
@@ -90,6 +93,7 @@ Subscribe to receive messages of specified type. Must resubscribe after disconne
 ---
 
 ### Basic Message (0x0001)
+
 UTF-8 chat messages. 16-byte nonce + encrypted data ≤ 1000 bytes total.
 
 **Data:** Encrypted UTF-8 string
@@ -97,9 +101,11 @@ UTF-8 chat messages. 16-byte nonce + encrypted data ≤ 1000 bytes total.
 ---
 
 ### Request User Data (0x0002)
+
 Request user information from all users. Clients should respond with User Data Response (0x0003).
 
 **Data Structure:**
+
 - Username length (2 bytes, big-endian)
 - Username (up to 32 bytes, UTF-8)
 - Color RGB (3 bytes: R, G, B values)
@@ -109,9 +115,11 @@ Request user information from all users. Clients should respond with User Data R
 ---
 
 ### User Data Response (0x0003)
+
 Send user information in response to Request User Data (0x0002).
 
 **Data Structure:** Same as Request User Data
+
 - Username length (2 bytes, big-endian)
 - Username (up to 32 bytes, UTF-8)
 - Color RGB (3 bytes: R, G, B values)
@@ -121,6 +129,7 @@ Send user information in response to Request User Data (0x0002).
 ---
 
 ### Keepalive (0x0005)
+
 Prevent connection timeout when idle. Send every 30 seconds when no other traffic. Not forwarded to other clients and cannot be subscribed to.
 
 **Data:** None - empty message
@@ -128,6 +137,7 @@ Prevent connection timeout when idle. Send every 30 seconds when no other traffi
 ---
 
 ### Unsubscribe (0xFFFF)
+
 Stop receiving messages of specified type.
 
 **Data:** Message type to unsubscribe from (2 bytes, big-endian)
@@ -135,9 +145,11 @@ Stop receiving messages of specified type.
 ---
 
 ### Advanced Text (0x0006)
+
 Multi-packet messages for long text with markdown formatting and ZSTD compression.
 
 **Implementation Notes:**
+
 - Text is compressed **before** splitting into packets
 - Header is not compressed
 - Packets may arrive out of order - use packet numbers to reconstruct
@@ -145,12 +157,14 @@ Multi-packet messages for long text with markdown formatting and ZSTD compressio
 - Warn users before displaying very large messages
 
 **Data Structure:**
+
 - Message ID (4 bytes, big-endian)
 - Packet number (2 bytes, big-endian, 0-indexed)
 - Final packet number (2 bytes, big-endian, 0-indexed)
 - Compressed markdown text (remaining bytes, ZSTD)
 
 ### Edit Advanced Text (0x0007)
+
 Edit or delete existing Advanced Text messages. Use same Message ID to replace existing message. Empty compressed text deletes the message. Client replaces original when final packet received.
 
 **Data Structure:** Same as Advanced Text (0x0006)
@@ -160,12 +174,14 @@ Edit or delete existing Advanced Text messages. Use same Message ID to replace e
 ## Implementation Guidelines
 
 ### Validation Requirements
+
 - All length fields must not exceed their specified maximums
 - Username/Client ID lengths must match actual string lengths
 - Message data must not exceed 1000 bytes (including nonce)
 - Packet numbers must be sequential and within final packet range
 
 ### Connection Lifecycle
+
 1. **Connect** to server (TCP/WebSocket)
 2. **Subscribe** to required message types
 3. **Send keepalive** every 30 seconds when idle
@@ -173,6 +189,7 @@ Edit or delete existing Advanced Text messages. Use same Message ID to replace e
 5. **Handle** out-of-order packets for Advanced Text
 
 ### Common Issues
+
 - **Encryption fails**: Ensure message type in additional data matches packet header
 - **Messages dropped**: Check total size ≤ 1000 bytes including nonce
 - **Connection timeout**: Verify keepalive frequency

README.md

@@ -1,4 +1,5 @@
 # BENNC-JS
+
 [![Build Status](https://drone.jacknet.io/api/badges/TerribleCodeClub/bennc-js/status.svg)](https://drone.jacknet.io/TerribleCodeClub/bennc-js)
 
 An implementation of the [BENNC](https://wiki.jacknet.io/books/simontech/chapter/bennc) client specification.
@@ -8,15 +9,18 @@ An implementation of the [BENNC](https://wiki.jacknet.io/books/simontech/chapter
 To build the BENNC-JS library, first clone this repository.
 
 Run the following commands from the root of the repository:
+
 ```bash
 $ npm install
 $ npm run build
 ```
+
 The build output will be saved to the `dist` directory.
 
 ## Development instructions
 
 Requirements:
+
 - The latest LTS builds of Node and npm.
 
 Follow the instructions below to lint, test and build BENNC-JS.
@@ -34,6 +38,7 @@ $ npm run lint
 $ npm install
 $ npm run test
 ```
+
 #### Build
 
 ```bash

src/index.ts

@@ -1,9 +1,9 @@
-export { numberToUint16BE, numberToUint32BE } from './utilities/number'
+export { numberToUint16BE, numberToUint32BE } from "./utilities/number";
-export { unpackIncomingPacket } from './messages/packet'
+export { unpackIncomingPacket } from "./messages/packet";
-export { packers, unpackers } from './mapping'
+export { packers, unpackers } from "./mapping";
-export { MessageTypes } from './common'
+export { MessageTypes } from "./common";
-export { IncomingPacket, OutgoingPacket } from './messages/packet'
+export { IncomingPacket, OutgoingPacket } from "./messages/packet";
-export { SubscribeMessage } from './messages/subscribe'
+export { SubscribeMessage } from "./messages/subscribe";
-export { BasicMessage } from './messages/basic'
+export { BasicMessage } from "./messages/basic";
-export { UserDataRequestMessage } from './messages/userDataRequest'
+export { UserDataRequestMessage } from "./messages/userDataRequest";
-export { UserDataResponseMessage } from './messages/userDataResponse'
+export { UserDataResponseMessage } from "./messages/userDataResponse";

src/messages/basic.ts

@@ -1,12 +1,12 @@
-import { encrypt } from 'romulus-js'
+import { encrypt } from "romulus-js";
-import { DEFAULT_KEY, MessageTypes } from '../common'
+import { DEFAULT_KEY, MessageTypes } from "../common";
-import { numberToUint16BE } from '../utilities/number'
+import { numberToUint16BE } from "../utilities/number";
-import { packOutgoingPacket } from './packet'
+import { packOutgoingPacket } from "./packet";
 
-const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Basic)
+const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Basic);
 
 export interface BasicMessage {
-  data: Uint8Array
+  data: Uint8Array;
 }
 
 /**
@@ -15,12 +15,15 @@ export interface BasicMessage {
  * @param key The key to encrypt the data with.
  * @returns An encrypted outgoing basic message (0x0001) packet.
  */
-export function packBasicMessage (message: Uint8Array, key: Uint8Array = DEFAULT_KEY): Uint8Array {
+export function packBasicMessage(
-  const data = encrypt(message, MESSAGE_TYPE, key)
+  message: Uint8Array,
+  key: Uint8Array = DEFAULT_KEY,
+): Uint8Array {
+  const data = encrypt(message, MESSAGE_TYPE, key);
   return packOutgoingPacket({
     messageType: MESSAGE_TYPE,
-    data: data
+    data: data,
-  })
+  });
 }
 
 /**
@@ -28,6 +31,6 @@ export function packBasicMessage (message: Uint8Array, key: Uint8Array = DEFAULT
  * @param data The data section of an incoming basic message (0x0001) message.
  * @returns An encrypted unpacked basic message (0x0001) message.
  */
-export function unpackBasicMessage (data: Uint8Array): Uint8Array {
+export function unpackBasicMessage(data: Uint8Array): Uint8Array {
-  return data
+  return data;
 }

src/messages/keepalive.ts

@@ -1,16 +1,16 @@
-import { MessageTypes } from '../common'
+import { MessageTypes } from "../common";
-import { numberToUint16BE } from '../utilities/number'
+import { numberToUint16BE } from "../utilities/number";
-import { packOutgoingPacket } from './packet'
+import { packOutgoingPacket } from "./packet";
 
-const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Keepalive)
+const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Keepalive);
 
 /**
  * Create an outgoing keepalive (0x0005) packet.
  * @returns An outgoing keepalive (0x0005) packet.
  */
-export function packKeepaliveMessage (): Uint8Array {
+export function packKeepaliveMessage(): Uint8Array {
   return packOutgoingPacket({
     messageType: MESSAGE_TYPE,
-    data: new Uint8Array(0)
+    data: new Uint8Array(0),
-  })
+  });
 }

src/messages/packet.ts

@@ -1,16 +1,16 @@
-import { MAX_DATA_LENGTH } from '../common'
+import { MAX_DATA_LENGTH } from "../common";
-import { numberToUint16BE } from '../utilities/number'
+import { numberToUint16BE } from "../utilities/number";
-import { SmartBuffer } from '../utilities/smart-buffer'
+import { SmartBuffer } from "../utilities/smart-buffer";
 
 export interface IncomingPacket {
-  messageType: number
+  messageType: number;
-  senderId: number
+  senderId: number;
-  data: Uint8Array
+  data: Uint8Array;
 }
 
 export interface OutgoingPacket {
-  messageType: Uint8Array
+  messageType: Uint8Array;
-  data: Uint8Array
+  data: Uint8Array;
 }
 
 /**
@@ -18,19 +18,21 @@ export interface OutgoingPacket {
  * @param outgoingPacket The message type and data to send.
  * @returns A buffer containing the ready-to-send packet.
  */
-export function packOutgoingPacket (outgoingPacket: OutgoingPacket): Uint8Array {
+export function packOutgoingPacket(outgoingPacket: OutgoingPacket): Uint8Array {
   // Verify that the data does not exceed the maximum data length.
   if (outgoingPacket.data.length > MAX_DATA_LENGTH) {
-    throw RangeError(`Specified data of length ${outgoingPacket.data.length} exceeds max data length ${MAX_DATA_LENGTH}.`)
+    throw RangeError(
+      `Specified data of length ${outgoingPacket.data.length} exceeds max data length ${MAX_DATA_LENGTH}.`,
+    );
   }
 
   // Prepare the outgoing packet.
-  const buffer = new SmartBuffer()
+  const buffer = new SmartBuffer();
-  buffer.writeBytes(outgoingPacket.messageType)
+  buffer.writeBytes(outgoingPacket.messageType);
-  buffer.writeBytes(numberToUint16BE(outgoingPacket.data.length))
+  buffer.writeBytes(numberToUint16BE(outgoingPacket.data.length));
-  buffer.writeBytes(outgoingPacket.data)
+  buffer.writeBytes(outgoingPacket.data);
 
-  return buffer.data
+  return buffer.data;
 }
 
 /**
@@ -38,17 +40,19 @@ export function packOutgoingPacket (outgoingPacket: OutgoingPacket): Uint8Array
  * @param incomingPacket The incoming buffer from a WebSocket to unpack.
  * @returns The unpacked data.
  */
-export function unpackIncomingPacket (incomingPacket: ArrayBuffer): IncomingPacket {
+export function unpackIncomingPacket(
-  const buffer = SmartBuffer.from(incomingPacket)
+  incomingPacket: ArrayBuffer,
+): IncomingPacket {
+  const buffer = SmartBuffer.from(incomingPacket);
 
-  const messageType = buffer.readUInt16()
+  const messageType = buffer.readUInt16();
-  const senderId = buffer.readUInt32()
+  const senderId = buffer.readUInt32();
-  const length = buffer.readUInt16()
+  const length = buffer.readUInt16();
-  const data = buffer.readBytes(length)
+  const data = buffer.readBytes(length);
 
   return {
     messageType: messageType,
     senderId: senderId,
-    data: data
+    data: data,
-  }
+  };
 }

src/messages/subscribe.ts

@@ -1,11 +1,11 @@
-import { MessageTypes } from '../common'
+import { MessageTypes } from "../common";
-import { numberToUint16BE } from '../utilities/number'
+import { numberToUint16BE } from "../utilities/number";
-import { packOutgoingPacket } from './packet'
+import { packOutgoingPacket } from "./packet";
 
-const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Subscribe)
+const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Subscribe);
 
 export interface SubscribeMessage {
-  messageType: number
+  messageType: number;
 }
 
 /**
@@ -13,10 +13,10 @@ export interface SubscribeMessage {
  * @param properties The properties for the message.
  * @returns An outgoing subscribe (0x0000) packet.
  */
-export function packSubscribeMessage (properties: SubscribeMessage): Uint8Array {
+export function packSubscribeMessage(properties: SubscribeMessage): Uint8Array {
-  const data = numberToUint16BE(properties.messageType)
+  const data = numberToUint16BE(properties.messageType);
   return packOutgoingPacket({
     messageType: MESSAGE_TYPE,
-    data: data
+    data: data,
-  })
+  });
 }

src/messages/unsubscribe.ts

@@ -1,11 +1,11 @@
-import { MessageTypes } from '../common'
+import { MessageTypes } from "../common";
-import { numberToUint16BE } from '../utilities/number'
+import { numberToUint16BE } from "../utilities/number";
-import { packOutgoingPacket } from './packet'
+import { packOutgoingPacket } from "./packet";
 
-const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Unsubscribe)
+const MESSAGE_TYPE = numberToUint16BE(MessageTypes.Unsubscribe);
 
 export interface UnsubscribeMessage {
-  messageType: number
+  messageType: number;
 }
 
 /**
@@ -13,10 +13,12 @@ export interface UnsubscribeMessage {
  * @param properties The properties for the message.
  * @returns An outgoing unsubscribe (0xFFFF) packet.
  */
-export function packUnsubscribeMessage (properties: UnsubscribeMessage): Uint8Array {
+export function packUnsubscribeMessage(
-  const data = numberToUint16BE(properties.messageType)
+  properties: UnsubscribeMessage,
+): Uint8Array {
+  const data = numberToUint16BE(properties.messageType);
   return packOutgoingPacket({
     messageType: MESSAGE_TYPE,
-    data: data
+    data: data,
-  })
+  });
 }

src/messages/userDataRequest.ts

@@ -1,16 +1,16 @@
-import Color from 'color'
+import Color from "color";
-import { encrypt } from 'romulus-js'
+import { encrypt } from "romulus-js";
-import { DEFAULT_KEY, MessageTypes } from '../common'
+import { DEFAULT_KEY, MessageTypes } from "../common";
-import { numberToUint16BE } from '../utilities/number'
+import { numberToUint16BE } from "../utilities/number";
-import { SmartBuffer } from '../utilities/smart-buffer'
+import { SmartBuffer } from "../utilities/smart-buffer";
-import { packOutgoingPacket } from './packet'
+import { packOutgoingPacket } from "./packet";
 
-const MESSAGE_TYPE = numberToUint16BE(MessageTypes.UserDataRequest)
+const MESSAGE_TYPE = numberToUint16BE(MessageTypes.UserDataRequest);
 
 export interface UserDataRequestMessage {
-  username: string
+  username: string;
-  colour: Color
+  colour: Color;
-  clientId: string
+  clientId: string;
 }
 
 /**
@@ -19,33 +19,36 @@ export interface UserDataRequestMessage {
  * @param key The key to encrypt the data with.
  * @returns An outgoing user data request (0x0002) packet.
  */
-export function packUserDataRequestMessage (properties: UserDataRequestMessage, key: Uint8Array = DEFAULT_KEY): Uint8Array {
+export function packUserDataRequestMessage(
-  const encoder = new TextEncoder()
+  properties: UserDataRequestMessage,
+  key: Uint8Array = DEFAULT_KEY,
+): Uint8Array {
+  const encoder = new TextEncoder();
 
   // Prepare data in correct format.
-  const username = encoder.encode(properties.username)
+  const username = encoder.encode(properties.username);
-  const usernameLength = numberToUint16BE(username.length)
+  const usernameLength = numberToUint16BE(username.length);
-  const colour = new Uint8Array(properties.colour.array())
+  const colour = new Uint8Array(properties.colour.array());
-  const clientId = encoder.encode(properties.clientId)
+  const clientId = encoder.encode(properties.clientId);
-  const clientIdLength = numberToUint16BE(clientId.length)
+  const clientIdLength = numberToUint16BE(clientId.length);
 
   // Pack data.
-  const packedData = new SmartBuffer()
+  const packedData = new SmartBuffer();
-  packedData.writeBytes(usernameLength)
+  packedData.writeBytes(usernameLength);
-  packedData.writeBytes(username)
+  packedData.writeBytes(username);
-  packedData.pad(32 - username.length)
+  packedData.pad(32 - username.length);
-  packedData.writeBytes(colour)
+  packedData.writeBytes(colour);
-  packedData.writeBytes(clientIdLength)
+  packedData.writeBytes(clientIdLength);
-  packedData.writeBytes(clientId)
+  packedData.writeBytes(clientId);
-  packedData.pad(32 - clientId.length)
+  packedData.pad(32 - clientId.length);
 
   // Encrypt the data.
-  const data = encrypt(packedData.data, MESSAGE_TYPE, key)
+  const data = encrypt(packedData.data, MESSAGE_TYPE, key);
 
   return packOutgoingPacket({
     messageType: MESSAGE_TYPE,
-    data: data
+    data: data,
-  })
+  });
 }
 
 /**
@@ -53,23 +56,25 @@ export function packUserDataRequestMessage (properties: UserDataRequestMessage,
  * @param data The decrypted data section of an incoming user data request (0x0002) message.
  * @returns An unpacked user data request (0x0002) message.
  */
-export function unpackUserDataRequestMessage (data: Uint8Array): UserDataRequestMessage {
+export function unpackUserDataRequestMessage(
+  data: Uint8Array,
+): UserDataRequestMessage {
   // Unpack and read data in correct format.
-  const packedData = SmartBuffer.from(data)
+  const packedData = SmartBuffer.from(data);
 
-  const usernameLength = packedData.readUInt16()
+  const usernameLength = packedData.readUInt16();
-  const username = packedData.readBytes(usernameLength)
+  const username = packedData.readBytes(usernameLength);
-  packedData.cursor = 34
+  packedData.cursor = 34;
-  const colour = packedData.readBytes(3)
+  const colour = packedData.readBytes(3);
-  const clientIdLength = packedData.readUInt16()
+  const clientIdLength = packedData.readUInt16();
-  const clientId = packedData.readBytes(clientIdLength)
+  const clientId = packedData.readBytes(clientIdLength);
 
-  const decoder = new TextDecoder()
+  const decoder = new TextDecoder();
 
   // Return data in correct format.
   return {
     username: decoder.decode(username),
     colour: Color.rgb(colour),
-    clientId: decoder.decode(clientId)
+    clientId: decoder.decode(clientId),
-  }
+  };
 }

src/messages/userDataResponse.ts

@@ -1,16 +1,16 @@
-import Color from 'color'
+import Color from "color";
-import { encrypt } from 'romulus-js'
+import { encrypt } from "romulus-js";
-import { DEFAULT_KEY, MessageTypes } from '../common'
+import { DEFAULT_KEY, MessageTypes } from "../common";
-import { numberToUint16BE } from '../utilities/number'
+import { numberToUint16BE } from "../utilities/number";
-import { SmartBuffer } from '../utilities/smart-buffer'
+import { SmartBuffer } from "../utilities/smart-buffer";
-import { packOutgoingPacket } from './packet'
+import { packOutgoingPacket } from "./packet";
 
-const MESSAGE_TYPE = numberToUint16BE(MessageTypes.UserDataResponse)
+const MESSAGE_TYPE = numberToUint16BE(MessageTypes.UserDataResponse);
 
 export interface UserDataResponseMessage {
-  username: string
+  username: string;
-  colour: Color
+  colour: Color;
-  clientId: string
+  clientId: string;
 }
 
 /**
@@ -19,32 +19,35 @@ export interface UserDataResponseMessage {
  * @param key The key to encrypt the data with.
  * @returns The data section of an outgoing user data response (0x0003) message.
  */
-export function packUserDataResponseMessage (properties: UserDataResponseMessage, key: Uint8Array = DEFAULT_KEY): Uint8Array {
+export function packUserDataResponseMessage(
-  const encoder = new TextEncoder()
+  properties: UserDataResponseMessage,
+  key: Uint8Array = DEFAULT_KEY,
+): Uint8Array {
+  const encoder = new TextEncoder();
 
   // Prepare data in correct format.
-  const username = encoder.encode(properties.username)
+  const username = encoder.encode(properties.username);
-  const usernameLength = numberToUint16BE(username.length)
+  const usernameLength = numberToUint16BE(username.length);
-  const colour = new Uint8Array(properties.colour.array())
+  const colour = new Uint8Array(properties.colour.array());
-  const clientId = encoder.encode(properties.clientId)
+  const clientId = encoder.encode(properties.clientId);
-  const clientIdLength = numberToUint16BE(clientId.length)
+  const clientIdLength = numberToUint16BE(clientId.length);
 
   // Pack data.
-  const packedData = new SmartBuffer()
+  const packedData = new SmartBuffer();
-  packedData.writeBytes(usernameLength)
+  packedData.writeBytes(usernameLength);
-  packedData.writeBytes(username)
+  packedData.writeBytes(username);
-  packedData.pad(32 - username.length)
+  packedData.pad(32 - username.length);
-  packedData.writeBytes(colour)
+  packedData.writeBytes(colour);
-  packedData.writeBytes(clientIdLength)
+  packedData.writeBytes(clientIdLength);
-  packedData.writeBytes(clientId)
+  packedData.writeBytes(clientId);
-  packedData.pad(32 - clientId.length)
+  packedData.pad(32 - clientId.length);
 
   // Return encrypted data.
-  const data = encrypt(packedData.data, MESSAGE_TYPE, key)
+  const data = encrypt(packedData.data, MESSAGE_TYPE, key);
   return packOutgoingPacket({
     messageType: MESSAGE_TYPE,
-    data: data
+    data: data,
-  })
+  });
 }
 
 /**
@@ -52,23 +55,25 @@ export function packUserDataResponseMessage (properties: UserDataResponseMessage
  * @param data The decrypted data section of an incoming user data response (0x0003) message.
  * @returns A unpacked user data response (0x0003) message.
  */
-export function unpackUserDataResponseMessage (data: Uint8Array): UserDataResponseMessage {
+export function unpackUserDataResponseMessage(
+  data: Uint8Array,
+): UserDataResponseMessage {
   // Unpack and read data in correct format.
-  const packedData = SmartBuffer.from(data)
+  const packedData = SmartBuffer.from(data);
 
-  const usernameLength = packedData.readUInt16()
+  const usernameLength = packedData.readUInt16();
-  const username = packedData.readBytes(usernameLength)
+  const username = packedData.readBytes(usernameLength);
-  packedData.cursor = 34
+  packedData.cursor = 34;
-  const colour = packedData.readBytes(3)
+  const colour = packedData.readBytes(3);
-  const clientIdLength = packedData.readUInt16()
+  const clientIdLength = packedData.readUInt16();
-  const clientId = packedData.readBytes(clientIdLength)
+  const clientId = packedData.readBytes(clientIdLength);
 
-  const decoder = new TextDecoder()
+  const decoder = new TextDecoder();
 
   // Return data in correct format.
   return {
     username: decoder.decode(username),
     colour: Color.rgb(colour),
-    clientId: decoder.decode(clientId)
+    clientId: decoder.decode(clientId),
-  }
+  };
 }

src/utilities/number.ts

@@ -3,11 +3,11 @@
  * @param number The number to pack.
  * @returns The packed buffer.
  */
-export function numberToUint16BE (number: number): Uint8Array {
+export function numberToUint16BE(number: number): Uint8Array {
-  const ret = new Uint8Array(2)
+  const ret = new Uint8Array(2);
-  ret[0] = (number & 0xFF00) >> 8
+  ret[0] = (number & 0xff00) >> 8;
-  ret[1] = (number & 0x00FF) >> 0
+  ret[1] = (number & 0x00ff) >> 0;
-  return ret
+  return ret;
 }
 
 /**
@@ -15,11 +15,11 @@ export function numberToUint16BE (number: number): Uint8Array {
  * @param number The number to pack.
  * @returns The packed buffer.
  */
-export function numberToUint32BE (number: number): Uint8Array {
+export function numberToUint32BE(number: number): Uint8Array {
-  const ret = new Uint8Array(4)
+  const ret = new Uint8Array(4);
-  ret[0] = (number & 0xFF000000) >> 24
+  ret[0] = (number & 0xff000000) >> 24;
-  ret[1] = (number & 0x00FF0000) >> 16
+  ret[1] = (number & 0x00ff0000) >> 16;
-  ret[2] = (number & 0x0000FF00) >> 8
+  ret[2] = (number & 0x0000ff00) >> 8;
-  ret[3] = (number & 0x000000FF) >> 0
+  ret[3] = (number & 0x000000ff) >> 0;
-  return ret
+  return ret;
 }

src/utilities/smart-buffer.ts

@@ -1,62 +1,64 @@
-import { numberToUint16BE, numberToUint32BE } from './number'
+import { numberToUint16BE, numberToUint32BE } from "./number";
 
 export class SmartBuffer {
-  private _data: number[]
+  private _data: number[];
-  private _cursor: number
+  private _cursor: number;
 
   /**
-  * Wrap a buffer to track position and provide useful read / write functionality.
+   * Wrap a buffer to track position and provide useful read / write functionality.
-  * @param data Buffer to wrap (optional).
+   * @param data Buffer to wrap (optional).
-  */
+   */
-  constructor (length: number = 0) {
+  constructor(length: number = 0) {
-    this._data = new Array<number>(length)
+    this._data = new Array<number>(length);
-    this._cursor = 0
+    this._cursor = 0;
   }
 
   /**
-  * Return a regular buffer.
+   * Return a regular buffer.
-  */
+   */
-  get data (): Uint8Array {
+  get data(): Uint8Array {
-    return new Uint8Array(this._data)
+    return new Uint8Array(this._data);
   }
 
   /**
-  * Update the smart buffer to wrap new data.
+   * Update the smart buffer to wrap new data.
-  */
+   */
-  set data (data: Uint8Array) {
+  set data(data: Uint8Array) {
-    this._data = Array.from(data)
+    this._data = Array.from(data);
-    this.cursor = 0
+    this.cursor = 0;
   }
 
   /**
-  * Get the length of the smart buffer data.
+   * Get the length of the smart buffer data.
-  */
+   */
-  get length (): number {
+  get length(): number {
-    return this._data.length
+    return this._data.length;
   }
 
   /**
-  * Set the length of the smart buffer data.
+   * Set the length of the smart buffer data.
-  */
+   */
-  set length (length: number) {
+  set length(length: number) {
-    this._data.length = length
+    this._data.length = length;
   }
 
   /**
-  * Get the current cursor position of the smart buffer.
+   * Get the current cursor position of the smart buffer.
-  */
+   */
-  get cursor (): number {
+  get cursor(): number {
-    return this._cursor
+    return this._cursor;
   }
 
   /**
-  * Set the cursor position of the smart buffer.
+   * Set the cursor position of the smart buffer.
-  */
+   */
-  set cursor (position: number) {
+  set cursor(position: number) {
     if (position < 0) {
-      throw RangeError(`Cannot seek to ${this.cursor} of ${this.length} bytes.`)
+      throw RangeError(
+        `Cannot seek to ${this.cursor} of ${this.length} bytes.`,
+      );
     }
-    this._cursor = position
+    this._cursor = position;
   }
 
   /**
@@ -64,33 +66,33 @@ export class SmartBuffer {
    * @param data The object to convert to a new SmartBuffer.
    * @returns A new SmartBuffer.
    */
-  static from (data: number[] | ArrayBuffer): SmartBuffer {
+  static from(data: number[] | ArrayBuffer): SmartBuffer {
-    const smartBuffer = new SmartBuffer()
+    const smartBuffer = new SmartBuffer();
     if (data instanceof ArrayBuffer) {
-      smartBuffer._data = Array.from(new Uint8Array(data))
+      smartBuffer._data = Array.from(new Uint8Array(data));
     } else {
-      smartBuffer._data = Array.from(data)
+      smartBuffer._data = Array.from(data);
     }
-    return smartBuffer
+    return smartBuffer;
   }
 
   /**
-  * Pads bytes to the end of the smart buffer.
+   * Pads bytes to the end of the smart buffer.
-  * @param length The number of bytes to pad.
+   * @param length The number of bytes to pad.
-  */
+   */
-  pad (length: number): void {
+  pad(length: number): void {
-    this._data.push(...Array<number>(length).fill(0))
+    this._data.push(...Array<number>(length).fill(0));
-    this.cursor += length
+    this.cursor += length;
   }
 
   /**
-  * Return the data from the specified range.
+   * Return the data from the specified range.
-  * @param start The start position.
+   * @param start The start position.
-  * @param end The end position.
+   * @param end The end position.
-  * @returns A new buffer containing data from the specified range.
+   * @returns A new buffer containing data from the specified range.
-  */
+   */
-  slice (start: number, end: number): Uint8Array {
+  slice(start: number, end: number): Uint8Array {
-    return new Uint8Array(this._data.slice(start, end))
+    return new Uint8Array(this._data.slice(start, end));
   }
 
   /**
@@ -99,66 +101,66 @@ export class SmartBuffer {
    * @param deleteCount The number of items to remove before inserting new data.
    * @param items The items to insert at the specified position.
    */
-  splice (start: number, deleteCount: number, ...items: number[]): void {
+  splice(start: number, deleteCount: number, ...items: number[]): void {
     if (this.length < start) {
-      this._data.push(...Array<number>(start))
+      this._data.push(...Array<number>(start));
     }
-    this._data.splice(this.cursor, deleteCount, ...items)
+    this._data.splice(this.cursor, deleteCount, ...items);
   }
 
   /**
-  * Read a UInt16 number from the smart buffer at the current cursor position, and increment the cursor.
+   * Read a UInt16 number from the smart buffer at the current cursor position, and increment the cursor.
-  * @returns A number represented by the bytes at the current cursor position.
+   * @returns A number represented by the bytes at the current cursor position.
-  */
+   */
-  readUInt16 (): number {
+  readUInt16(): number {
-    const num = this.slice(this.cursor, this.cursor + 2)
+    const num = this.slice(this.cursor, this.cursor + 2);
-    this.cursor += 2
+    this.cursor += 2;
-    return (num[0] << 8 | num[1]) >>> 0
+    return ((num[0] << 8) | num[1]) >>> 0;
   }
 
   /**
-  * Read a UInt32 number from the smart buffer at the current cursor position, and increment the cursor.
+   * Read a UInt32 number from the smart buffer at the current cursor position, and increment the cursor.
-  * @returns A number represented by the bytes at the current cursor position.
+   * @returns A number represented by the bytes at the current cursor position.
-  */
+   */
-  readUInt32 (): number {
+  readUInt32(): number {
-    const num = this.slice(this.cursor, this.cursor + 4)
+    const num = this.slice(this.cursor, this.cursor + 4);
-    this.cursor += 4
+    this.cursor += 4;
-    return (num[0] << 24 | num[1] << 16 | num[2] << 8 | num[3]) >>> 0
+    return ((num[0] << 24) | (num[1] << 16) | (num[2] << 8) | num[3]) >>> 0;
   }
 
   /**
-  * Read the specified number of bytes from the smart buffer at the current cursor position, and increment the cursor.
+   * Read the specified number of bytes from the smart buffer at the current cursor position, and increment the cursor.
-  * @returns A buffer containing the bytes read from the current cursor position.
+   * @returns A buffer containing the bytes read from the current cursor position.
-  */
+   */
-  readBytes (length: number): Uint8Array {
+  readBytes(length: number): Uint8Array {
-    this.cursor += length
+    this.cursor += length;
-    return this.slice(this.cursor - length, this.cursor)
+    return this.slice(this.cursor - length, this.cursor);
   }
 
   /**
-  * Write a UInt16 number to the smart buffer at the current cursor position, and increment the cursor.
+   * Write a UInt16 number to the smart buffer at the current cursor position, and increment the cursor.
-  * @param number The number to write in UInt16 format at the current cursor position.
+   * @param number The number to write in UInt16 format at the current cursor position.
-  */
+   */
-  writeUInt16 (number: number): void {
+  writeUInt16(number: number): void {
-    this.splice(this.cursor, 2, ...numberToUint16BE(number))
+    this.splice(this.cursor, 2, ...numberToUint16BE(number));
-    this.cursor += 2
+    this.cursor += 2;
   }
 
   /**
-  * Write a UInt32 number to the smart buffer at the current cursor position, and increment the cursor.
+   * Write a UInt32 number to the smart buffer at the current cursor position, and increment the cursor.
-  * @param number The number to write in UInt32 format at the current cursor position.
+   * @param number The number to write in UInt32 format at the current cursor position.
-  */
+   */
-  writeUInt32 (number: number): void {
+  writeUInt32(number: number): void {
-    this.splice(this.cursor, 4, ...numberToUint32BE(number))
+    this.splice(this.cursor, 4, ...numberToUint32BE(number));
-    this.cursor += 4
+    this.cursor += 4;
   }
 
   /**
-  * Write the specified bytes to the smart buffer at the current cursor position, and increment the cursor.
+   * Write the specified bytes to the smart buffer at the current cursor position, and increment the cursor.
-  * @param buffer The bytes to write at the current cursor position.
+   * @param buffer The bytes to write at the current cursor position.
-  */
+   */
-  writeBytes (buffer: number[] | Uint8Array): void {
+  writeBytes(buffer: number[] | Uint8Array): void {
-    this.splice(this.cursor, buffer.length, ...buffer)
+    this.splice(this.cursor, buffer.length, ...buffer);
-    this.cursor += buffer.length
+    this.cursor += buffer.length;
   }
 }

tests/messages/basic.test.ts

@@ -1,36 +1,37 @@
-import { MessageTypes } from '../../src/common'
+import { MessageTypes } from "../../src/common";
-import { packers, unpackers } from '../../src/mapping'
+import { packers, unpackers } from "../../src/mapping";
 
-const KEY = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15])
+const KEY = new Uint8Array([
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+]);
 
-test('Create a basic message (0x0001) packet.', () => {
+test("Create a basic message (0x0001) packet.", () => {
   // Given
-  const encoder = new TextEncoder()
+  const encoder = new TextEncoder();
-  const message = encoder.encode('Hello, World!')
+  const message = encoder.encode("Hello, World!");
 
   // When
-  const packedPacket = packers[MessageTypes.Basic](
+  const packedPacket = packers[MessageTypes.Basic](message, KEY);
-    message,
-    KEY
-  )
 
   // Then
   // We can't check the contents of the data as it's encrypted with a random nonce.
   // Check the message type and length.
-  expect(packedPacket.slice(0, 4)).toMatchObject(new Uint8Array([0x00, 0x01, 0x00, 0x2D]))
+  expect(packedPacket.slice(0, 4)).toMatchObject(
+    new Uint8Array([0x00, 0x01, 0x00, 0x2d]),
+  );
 
   // Check the total length is as expected.
-  expect(packedPacket.length).toBe(49)
+  expect(packedPacket.length).toBe(49);
-})
+});
 
-test('Parse a basic message (0x0001).', () => {
+test("Parse a basic message (0x0001).", () => {
   // Given
-  const data = new Uint8Array([1, 2, 3, 4])
+  const data = new Uint8Array([1, 2, 3, 4]);
 
   // When
-  const unpackedPacket = unpackers[MessageTypes.Basic](data)
+  const unpackedPacket = unpackers[MessageTypes.Basic](data);
 
   // Then
-  expect(unpackedPacket)
+  expect(unpackedPacket);
-  expect(unpackedPacket).toMatchObject(data)
+  expect(unpackedPacket).toMatchObject(data);
-})
+});

tests/messages/keepalive.test.ts

@@ -1,11 +1,11 @@
-import { MessageTypes } from '../../src/common'
+import { MessageTypes } from "../../src/common";
-import { packers } from '../../src/mapping'
+import { packers } from "../../src/mapping";
 
-test('Create a keepalive (0x0005) packet.', () => {
+test("Create a keepalive (0x0005) packet.", () => {
   // When
-  const packedPacket = packers[MessageTypes.Keepalive]()
+  const packedPacket = packers[MessageTypes.Keepalive]();
 
   // Then
-  const expectedResult = new Uint8Array([0x00, 0x05, 0x00, 0x00])
+  const expectedResult = new Uint8Array([0x00, 0x05, 0x00, 0x00]);
-  expect(packedPacket).toMatchObject(expectedResult)
+  expect(packedPacket).toMatchObject(expectedResult);
-})
+});

tests/messages/packet.test.ts

@@ -1,15 +1,18 @@
-import { packOutgoingPacket, unpackIncomingPacket } from '../../src/messages/packet'
+import {
+  packOutgoingPacket,
+  unpackIncomingPacket,
+} from "../../src/messages/packet";
 
-test('Pack an outgoing packet.', () => {
+test("Pack an outgoing packet.", () => {
   // Given
-  const messageType = new Uint8Array([0x12, 0x34])
+  const messageType = new Uint8Array([0x12, 0x34]);
-  const data = new Uint8Array([0x12, 0x34, 0x56, 0x78])
+  const data = new Uint8Array([0x12, 0x34, 0x56, 0x78]);
 
   // When
   const packedPacket = packOutgoingPacket({
     messageType: messageType,
-    data: data
+    data: data,
-  })
+  });
 
   // Then
   const expectedResult = new Uint8Array([
@@ -18,12 +21,12 @@ test('Pack an outgoing packet.', () => {
     // Data length
     0x00, 0x04,
     // Data
-    0x12, 0x34, 0x56, 0x78
+    0x12, 0x34, 0x56, 0x78,
-  ])
+  ]);
-  expect(packedPacket).toMatchObject(expectedResult)
+  expect(packedPacket).toMatchObject(expectedResult);
-})
+});
 
-test('Unpack an incoming packet.', () => {
+test("Unpack an incoming packet.", () => {
   // Given
   const incomingPacket = new Uint8Array([
     // Message type
@@ -33,14 +36,16 @@ test('Unpack an incoming packet.', () => {
     // Data length
     0x00, 0x04,
     // Data
-    0x12, 0x34, 0x56, 0x78
+    0x12, 0x34, 0x56, 0x78,
-  ])
+  ]);
 
   // When
-  const unpackedResult = unpackIncomingPacket(incomingPacket)
+  const unpackedResult = unpackIncomingPacket(incomingPacket);
 
   // Then
-  expect(unpackedResult.messageType).toBe(0x1234)
+  expect(unpackedResult.messageType).toBe(0x1234);
-  expect(unpackedResult.senderId).toBe(0xaabbccdd)
+  expect(unpackedResult.senderId).toBe(0xaabbccdd);
-  expect(unpackedResult.data).toMatchObject(new Uint8Array([0x12, 0x34, 0x56, 0x78]))
+  expect(unpackedResult.data).toMatchObject(
-})
+    new Uint8Array([0x12, 0x34, 0x56, 0x78]),
+  );
+});

tests/messages/subscribe.test.ts

@@ -1,14 +1,16 @@
-import { MessageTypes } from '../../src/common'
+import { MessageTypes } from "../../src/common";
-import { packers } from '../../src/mapping'
+import { packers } from "../../src/mapping";
 
-test('Create a subscribe (0x0000) packet.', () => {
+test("Create a subscribe (0x0000) packet.", () => {
   // Given
-  const messageType = 0xabcd
+  const messageType = 0xabcd;
 
   // When
-  const packedPacket = packers[MessageTypes.Subscribe]({ messageType: messageType })
+  const packedPacket = packers[MessageTypes.Subscribe]({
+    messageType: messageType,
+  });
 
   // Then
-  const expectedResult = new Uint8Array([0x00, 0x00, 0x00, 0x02, 0xab, 0xcd])
+  const expectedResult = new Uint8Array([0x00, 0x00, 0x00, 0x02, 0xab, 0xcd]);
-  expect(packedPacket).toMatchObject(expectedResult)
+  expect(packedPacket).toMatchObject(expectedResult);
-})
+});

tests/messages/unsubscribe.test.ts

@@ -1,14 +1,16 @@
-import { MessageTypes } from '../../src/common'
+import { MessageTypes } from "../../src/common";
-import { packers } from '../../src/mapping'
+import { packers } from "../../src/mapping";
 
-test('Create an unsubscribe (0xffff) packet.', () => {
+test("Create an unsubscribe (0xffff) packet.", () => {
   // Given
-  const messageType = 0xabcd
+  const messageType = 0xabcd;
 
   // When
-  const packedPacket = packers[MessageTypes.Unsubscribe]({ messageType: messageType })
+  const packedPacket = packers[MessageTypes.Unsubscribe]({
+    messageType: messageType,
+  });
 
   // Then
-  const expectedResult = new Uint8Array([0xff, 0xff, 0x00, 0x02, 0xab, 0xcd])
+  const expectedResult = new Uint8Array([0xff, 0xff, 0x00, 0x02, 0xab, 0xcd]);
-  expect(packedPacket).toMatchObject(expectedResult)
+  expect(packedPacket).toMatchObject(expectedResult);
-})
+});

tests/messages/userDataRequest.test.ts

@@ -1,52 +1,56 @@
-import Color from 'color'
+import Color from "color";
-import { MessageTypes } from '../../src/common'
+import { MessageTypes } from "../../src/common";
-import { packers, unpackers } from '../../src/mapping'
+import { packers, unpackers } from "../../src/mapping";
 
-const KEY = new Uint8Array([0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F])
+const KEY = new Uint8Array([
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+  0x0d, 0x0e, 0x0f,
+]);
 
-test('Create a user data request (0x0002) packet.', () => {
+test("Create a user data request (0x0002) packet.", () => {
   // Given
-  const username = 'Butlersaurus'
+  const username = "Butlersaurus";
-  const colour = Color('#FF4000')
+  const colour = Color("#FF4000");
-  const clientId = 'Mercury'
+  const clientId = "Mercury";
 
   // When
   const packedPacket = packers[MessageTypes.UserDataRequest](
     {
       username: username,
       colour: colour,
-      clientId: clientId
+      clientId: clientId,
     },
-    KEY
+    KEY,
-  )
+  );
 
   // Then
   // We can't check the contents of the data as it's encrypted with a random nonce.
   // Check the message type and length.
-  expect(packedPacket.slice(0, 4)).toMatchObject(new Uint8Array([0x00, 0x02, 0x00, 0x67]))
+  expect(packedPacket.slice(0, 4)).toMatchObject(
+    new Uint8Array([0x00, 0x02, 0x00, 0x67]),
+  );
 
   // Check the total length is as expected.
-  expect(packedPacket.length).toBe(107)
+  expect(packedPacket.length).toBe(107);
-})
+});
 
-test('Parse a user data request (0x0002).', () => {
+test("Parse a user data request (0x0002).", () => {
   // Given
   const data = new Uint8Array([
-    0, 12,
+    0, 12, 66, 117, 116, 108, 101, 114, 115, 97, 117, 114, 117, 115, 0, 0, 0, 0,
-    66, 117, 116, 108, 101, 114, 115, 97, 117, 114, 117, 115, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 64, 0, 0, 7, 77, 101,
-    255, 64, 0,
+    114, 99, 117, 114, 121, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 7,
+    0, 0, 0, 0, 0, 0, 0, 0,
-    77, 101, 114, 99, 117, 114, 121, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+  ]);
-  ])
+  const username = "Butlersaurus";
-  const username = 'Butlersaurus'
+  const colour = Color("#FF4000");
-  const colour = Color('#FF4000')
+  const clientId = "Mercury";
-  const clientId = 'Mercury'
 
   // When
-  const unpackedPacket = unpackers[MessageTypes.UserDataRequest](data)
+  const unpackedPacket = unpackers[MessageTypes.UserDataRequest](data);
 
   // Then
-  expect(unpackedPacket.username).toBe(username)
+  expect(unpackedPacket.username).toBe(username);
-  expect(unpackedPacket.colour).toMatchObject(colour)
+  expect(unpackedPacket.colour).toMatchObject(colour);
-  expect(unpackedPacket.clientId).toBe(clientId)
+  expect(unpackedPacket.clientId).toBe(clientId);
-})
+});

tests/messages/userDataResponse.test.ts

@@ -1,52 +1,56 @@
-import Color from 'color'
+import Color from "color";
-import { MessageTypes } from '../../src/common'
+import { MessageTypes } from "../../src/common";
-import { packers, unpackers } from '../../src/mapping'
+import { packers, unpackers } from "../../src/mapping";
 
-const KEY = new Uint8Array([0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F])
+const KEY = new Uint8Array([
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+  0x0d, 0x0e, 0x0f,
+]);
 
-test('Create a user data response (0x0003) packet.', () => {
+test("Create a user data response (0x0003) packet.", () => {
   // Given
-  const username = 'Butlersaurus'
+  const username = "Butlersaurus";
-  const colour = Color('#FF4000')
+  const colour = Color("#FF4000");
-  const clientId = 'Mercury'
+  const clientId = "Mercury";
 
   // When
   const packedPacket = packers[MessageTypes.UserDataResponse](
     {
       username: username,
       colour: colour,
-      clientId: clientId
+      clientId: clientId,
     },
-    KEY
+    KEY,
-  )
+  );
 
   // Then
   // We can't check the contents of the data as it's encrypted with a random nonce.
   // Check the message type and length.
-  expect(packedPacket.slice(0, 4)).toMatchObject(new Uint8Array([0x00, 0x03, 0x00, 0x67]))
+  expect(packedPacket.slice(0, 4)).toMatchObject(
+    new Uint8Array([0x00, 0x03, 0x00, 0x67]),
+  );
 
   // Check the total length is as expected.
-  expect(packedPacket.length).toBe(107)
+  expect(packedPacket.length).toBe(107);
-})
+});
 
-test('Parse a user data response (0x0003).', () => {
+test("Parse a user data response (0x0003).", () => {
   // Given
   const data = new Uint8Array([
-    0, 12,
+    0, 12, 66, 117, 116, 108, 101, 114, 115, 97, 117, 114, 117, 115, 0, 0, 0, 0,
-    66, 117, 116, 108, 101, 114, 115, 97, 117, 114, 117, 115, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 64, 0, 0, 7, 77, 101,
-    255, 64, 0,
+    114, 99, 117, 114, 121, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 7,
+    0, 0, 0, 0, 0, 0, 0, 0,
-    77, 101, 114, 99, 117, 114, 121, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+  ]);
-  ])
+  const username = "Butlersaurus";
-  const username = 'Butlersaurus'
+  const colour = Color("#FF4000");
-  const colour = Color('#FF4000')
+  const clientId = "Mercury";
-  const clientId = 'Mercury'
 
   // When
-  const unpackedPacket = unpackers[MessageTypes.UserDataResponse](data)
+  const unpackedPacket = unpackers[MessageTypes.UserDataResponse](data);
 
   // Then
-  expect(unpackedPacket.username).toBe(username)
+  expect(unpackedPacket.username).toBe(username);
-  expect(unpackedPacket.colour).toMatchObject(colour)
+  expect(unpackedPacket.colour).toMatchObject(colour);
-  expect(unpackedPacket.clientId).toBe(clientId)
+  expect(unpackedPacket.clientId).toBe(clientId);
-})
+});

tests/utilities/number.test.ts

@@ -1,19 +1,19 @@
-import { numberToUint16BE, numberToUint32BE } from '../../src/utilities/number'
+import { numberToUint16BE, numberToUint32BE } from "../../src/utilities/number";
 
-test('Test number conversion to Uint16 big endian buffer.', () => {
+test("Test number conversion to Uint16 big endian buffer.", () => {
   // When
-  const result = numberToUint16BE(1234)
+  const result = numberToUint16BE(1234);
 
   // Then
-  const expectedResult = new Uint8Array([0x04, 0xd2])
+  const expectedResult = new Uint8Array([0x04, 0xd2]);
-  expect(result).toMatchObject(expectedResult)
+  expect(result).toMatchObject(expectedResult);
-})
+});
 
-test('Test number conversion to Uint32 big endian buffer.', () => {
+test("Test number conversion to Uint32 big endian buffer.", () => {
   // When
-  const result = numberToUint32BE(123456)
+  const result = numberToUint32BE(123456);
 
   // Then
-  const expectedResult = new Uint8Array([0x00, 0x01, 0xE2, 0x40])
+  const expectedResult = new Uint8Array([0x00, 0x01, 0xe2, 0x40]);
-  expect(result).toMatchObject(expectedResult)
+  expect(result).toMatchObject(expectedResult);
-})
+});

tests/utilities/smart-buffer.test.ts

@@ -1,230 +1,240 @@
-import { SmartBuffer } from '../../src/utilities/smart-buffer'
+import { SmartBuffer } from "../../src/utilities/smart-buffer";
 
-test('Read a UInt16.', () => {
+test("Read a UInt16.", () => {
   // Given
-  const buffer = [0x30, 0x39]
+  const buffer = [0x30, 0x39];
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
 
   // Then
-  expect(smartBuffer.readUInt16()).toBe(12345)
+  expect(smartBuffer.readUInt16()).toBe(12345);
-})
+});
 
-test('Read a UInt32.', () => {
+test("Read a UInt32.", () => {
   // Given
-  const buffer = [0x49, 0x96, 0x02, 0xD2]
+  const buffer = [0x49, 0x96, 0x02, 0xd2];
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
 
   // Then
-  expect(smartBuffer.readUInt32()).toBe(1234567890)
+  expect(smartBuffer.readUInt32()).toBe(1234567890);
-})
+});
 
-test('Read a buffer.', () => {
+test("Read a buffer.", () => {
   // Given
-  const buffer = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+  const buffer = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
 
   // Then
-  const result = smartBuffer.readBytes(4)
+  const result = smartBuffer.readBytes(4);
-  expect(result).toMatchObject(new Uint8Array([0, 1, 2, 3]))
+  expect(result).toMatchObject(new Uint8Array([0, 1, 2, 3]));
-})
+});
 
-test('Read a UInt16 from an offset.', () => {
+test("Read a UInt16 from an offset.", () => {
   // Given
-  const buffer = [0x00, 0x00, 0x30, 0x39]
+  const buffer = [0x00, 0x00, 0x30, 0x39];
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
-  smartBuffer.cursor = 2
+  smartBuffer.cursor = 2;
 
   // Then
-  expect(smartBuffer.readUInt16()).toBe(12345)
+  expect(smartBuffer.readUInt16()).toBe(12345);
-})
+});
 
-test('Read a UInt32 from an offset.', () => {
+test("Read a UInt32 from an offset.", () => {
   // Given
-  const buffer = [0x00, 0x00, 0x49, 0x96, 0x02, 0xD2]
+  const buffer = [0x00, 0x00, 0x49, 0x96, 0x02, 0xd2];
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
-  smartBuffer.cursor = 2
+  smartBuffer.cursor = 2;
 
   // Then
-  expect(smartBuffer.readUInt32()).toBe(1234567890)
+  expect(smartBuffer.readUInt32()).toBe(1234567890);
-})
+});
 
-test('Read a buffer from an offset.', () => {
+test("Read a buffer from an offset.", () => {
   // Given
-  const buffer = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+  const buffer = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
-  smartBuffer.cursor = 2
+  smartBuffer.cursor = 2;
 
   // Then
-  expect(smartBuffer.readBytes(4)).toMatchObject(new Uint8Array([2, 3, 4, 5]))
+  expect(smartBuffer.readBytes(4)).toMatchObject(new Uint8Array([2, 3, 4, 5]));
-})
+});
 
-test('Write a UInt16.', () => {
+test("Write a UInt16.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.writeUInt16(12345)
+  smartBuffer.writeUInt16(12345);
 
   // Then
-  expect(smartBuffer.data).toMatchObject(new Uint8Array([0x30, 0x39]))
+  expect(smartBuffer.data).toMatchObject(new Uint8Array([0x30, 0x39]));
-})
+});
 
-test('Write a UInt32.', () => {
+test("Write a UInt32.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.writeUInt32(1234567890)
+  smartBuffer.writeUInt32(1234567890);
 
   // Then
-  expect(smartBuffer.data).toMatchObject(new Uint8Array([0x49, 0x96, 0x02, 0xD2]))
+  expect(smartBuffer.data).toMatchObject(
-})
+    new Uint8Array([0x49, 0x96, 0x02, 0xd2]),
+  );
+});
 
-test('Write a buffer.', () => {
+test("Write a buffer.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.writeBytes([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
+  smartBuffer.writeBytes([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
 
   // Then
-  expect(smartBuffer.data).toMatchObject(new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]))
+  expect(smartBuffer.data).toMatchObject(
-})
+    new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]),
+  );
+});
 
-test('Write a UInt16 at an offset.', () => {
+test("Write a UInt16 at an offset.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.cursor = 2
+  smartBuffer.cursor = 2;
-  smartBuffer.writeUInt16(12345)
+  smartBuffer.writeUInt16(12345);
 
   // Then
-  expect(smartBuffer.data).toMatchObject(new Uint8Array([0x00, 0x00, 0x30, 0x39]))
+  expect(smartBuffer.data).toMatchObject(
-})
+    new Uint8Array([0x00, 0x00, 0x30, 0x39]),
+  );
+});
 
-test('Write a UInt32 at an offset.', () => {
+test("Write a UInt32 at an offset.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.cursor = 2
+  smartBuffer.cursor = 2;
-  smartBuffer.writeUInt32(1234567890)
+  smartBuffer.writeUInt32(1234567890);
 
   // Then
-  expect(smartBuffer.data).toMatchObject(new Uint8Array([0x00, 0x00, 0x49, 0x96, 0x02, 0xD2]))
+  expect(smartBuffer.data).toMatchObject(
-})
+    new Uint8Array([0x00, 0x00, 0x49, 0x96, 0x02, 0xd2]),
+  );
+});
 
-test('Write a buffer at an offset.', () => {
+test("Write a buffer at an offset.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.cursor = 2
+  smartBuffer.cursor = 2;
-  smartBuffer.writeBytes([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
+  smartBuffer.writeBytes([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
 
   // Then
-  expect(smartBuffer.data).toMatchObject(new Uint8Array([0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9]))
+  expect(smartBuffer.data).toMatchObject(
-})
+    new Uint8Array([0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9]),
+  );
+});
 
-test('Cursor is correctly incremented after reading a UInt16.', () => {
+test("Cursor is correctly incremented after reading a UInt16.", () => {
   // Given
-  const buffer = new Uint8Array(4)
+  const buffer = new Uint8Array(4);
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
 
   // Then
-  smartBuffer.readUInt16()
+  smartBuffer.readUInt16();
-  expect(smartBuffer.cursor).toBe(2)
+  expect(smartBuffer.cursor).toBe(2);
-})
+});
 
-test('Cursor is correctly incremented after reading a UInt32.', () => {
+test("Cursor is correctly incremented after reading a UInt32.", () => {
   // Given
-  const buffer = new Uint8Array(4)
+  const buffer = new Uint8Array(4);
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
 
   // Then
-  smartBuffer.readUInt32()
+  smartBuffer.readUInt32();
-  expect(smartBuffer.cursor).toBe(4)
+  expect(smartBuffer.cursor).toBe(4);
-})
+});
 
-test('Cursor is correctly incremented after reading a buffer.', () => {
+test("Cursor is correctly incremented after reading a buffer.", () => {
   // Given
-  const buffer = new Uint8Array(8)
+  const buffer = new Uint8Array(8);
 
   // When
-  const smartBuffer = SmartBuffer.from(buffer)
+  const smartBuffer = SmartBuffer.from(buffer);
 
   // Then
-  smartBuffer.readBytes(4)
+  smartBuffer.readBytes(4);
-  expect(smartBuffer.cursor).toBe(4)
+  expect(smartBuffer.cursor).toBe(4);
-})
+});
 
-test('Cursor is correctly incremented after writing a UInt16.', () => {
+test("Cursor is correctly incremented after writing a UInt16.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.writeUInt16(12345)
+  smartBuffer.writeUInt16(12345);
 
   // Then
-  expect(smartBuffer.cursor).toBe(2)
+  expect(smartBuffer.cursor).toBe(2);
-})
+});
 
-test('Cursor is correctly incremented after writing a UInt32.', () => {
+test("Cursor is correctly incremented after writing a UInt32.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.writeUInt32(1234567890)
+  smartBuffer.writeUInt32(1234567890);
 
   // Then
-  expect(smartBuffer.cursor).toBe(4)
+  expect(smartBuffer.cursor).toBe(4);
-})
+});
 
-test('Cursor is correctly incremented after writing a buffer.', () => {
+test("Cursor is correctly incremented after writing a buffer.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.writeBytes([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
+  smartBuffer.writeBytes([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
 
   // Then
-  expect(smartBuffer.cursor).toBe(10)
+  expect(smartBuffer.cursor).toBe(10);
-})
+});
 
-test('Seek to position below 0 throws range error.', () => {
+test("Seek to position below 0 throws range error.", () => {
   // When
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // Then
   expect(() => {
-    smartBuffer.cursor = -1
+    smartBuffer.cursor = -1;
-  }).toThrow(RangeError)
+  }).toThrow(RangeError);
-})
+});
 
-test('Pad some data.', () => {
+test("Pad some data.", () => {
   // Given
-  const smartBuffer = new SmartBuffer()
+  const smartBuffer = new SmartBuffer();
 
   // When
-  smartBuffer.pad(10)
+  smartBuffer.pad(10);
 
   // Then
-  expect(smartBuffer.length).toBe(10)
+  expect(smartBuffer.length).toBe(10);
-})
+});

tsconfig.json

@@ -1,19 +1,16 @@
 {
   "compilerOptions": {
     /* Visit https://aka.ms/tsconfig.json to read more about this file */
-    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    "target": "es2016" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
-    "module": "commonjs",                                /* Specify what module code is generated. */
+    "module": "commonjs" /* Specify what module code is generated. */,
-    "rootDir": "src",                                    /* Specify the root folder within your source files. */
+    "rootDir": "src" /* Specify the root folder within your source files. */,
-    "sourceMap": true,                                   /* Create source map files for emitted JavaScript files. */
+    "sourceMap": true /* Create source map files for emitted JavaScript files. */,
-    "outDir": "dist",                                    /* Specify an output folder for all emitted files. */
+    "outDir": "dist" /* Specify an output folder for all emitted files. */,
-    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */
+    "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */,
-    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
+    "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
-    "strict": true,                                      /* Enable all strict type-checking options. */
+    "strict": true /* Enable all strict type-checking options. */,
-    "skipLibCheck": true,                                /* Skip type checking all .d.ts files. */
+    "skipLibCheck": true /* Skip type checking all .d.ts files. */,
     "declaration": true
   },
-  "exclude": [
+  "exclude": ["tests", "dist"]
-    "tests",
-    "dist"
-  ]
 }