@tldraw/sync-core/dist-esm/lib/RoomSession.mjs.map

tldraw infinite canvas SDK (multiplayer sync).

{
  "version": 3,
  "sources": ["../../src/lib/RoomSession.ts"],
  "sourcesContent": ["import { SerializedSchema, UnknownRecord } from '@tldraw/store'\nimport { TLRoomSocket } from './TLSyncRoom'\nimport { TLSocketServerSentDataEvent } from './protocol'\n\n/**\n * Enumeration of possible states for a room session during its lifecycle.\n *\n * Room sessions progress through these states as clients connect, authenticate,\n * and disconnect from collaborative rooms.\n *\n * @internal\n */\nexport const RoomSessionState = {\n\t/** Session is waiting for the initial connect message from the client */\n\tAwaitingConnectMessage: 'awaiting-connect-message',\n\t/** Session is disconnected but waiting for final cleanup before removal */\n\tAwaitingRemoval: 'awaiting-removal',\n\t/** Session is fully connected and actively synchronizing */\n\tConnected: 'connected',\n} as const\n\n/**\n * Type representing the possible states a room session can be in.\n *\n * @example\n * ```ts\n * const sessionState: RoomSessionState = RoomSessionState.Connected\n * if (sessionState === RoomSessionState.AwaitingConnectMessage) {\n *   console.log('Session waiting for connect message')\n * }\n * ```\n *\n * @internal\n */\nexport type RoomSessionState = (typeof RoomSessionState)[keyof typeof RoomSessionState]\n\n/**\n * Maximum time in milliseconds to wait for a connect message after socket connection.\n *\n * If a client connects but doesn't send a connect message within this time,\n * the session will be terminated.\n *\n * @public\n */\nexport const SESSION_START_WAIT_TIME = 10000\n\n/**\n * Time in milliseconds to wait before completely removing a disconnected session.\n *\n * This grace period allows for quick reconnections without losing session state,\n * which is especially helpful for brief network interruptions.\n *\n * @public\n */\nexport const SESSION_REMOVAL_WAIT_TIME = 5000\n\n/**\n * Maximum time in milliseconds a connected session can remain idle before cleanup.\n *\n * Sessions that don't receive any messages or interactions for this duration\n * may be considered for cleanup to free server resources.\n *\n * @public\n */\nexport const SESSION_IDLE_TIMEOUT = 20000\n\n/**\n * Base properties shared by all room session states.\n *\n * @internal\n */\nexport interface RoomSessionBase<R extends UnknownRecord, Meta> {\n\t/** Unique identifier for this session */\n\tsessionId: string\n\t/** Presence identifier for live cursor/selection tracking, if available */\n\tpresenceId: string | null\n\t/** WebSocket connection wrapper for this session */\n\tsocket: TLRoomSocket<R>\n\t/** Custom metadata associated with this session */\n\tmeta: Meta\n\t/** Whether this session has read-only permissions */\n\tisReadonly: boolean\n\t/** Whether this session requires legacy protocol rejection handling */\n\trequiresLegacyRejection: boolean\n\t/** Whether this session supports string append operations */\n\tsupportsStringAppend: boolean\n}\n\n/**\n * Represents a client session within a collaborative room, tracking the connection\n * state, permissions, and synchronization details for a single user.\n *\n * Each session corresponds to one WebSocket connection and progresses through\n * different states during its lifecycle. The session type is a discriminated union\n * based on the current state, ensuring type safety when accessing state-specific properties.\n *\n * @example\n * ```ts\n * // Check session state and access appropriate properties\n * function handleSession(session: RoomSession<MyRecord, UserMeta>) {\n *   switch (session.state) {\n *     case RoomSessionState.AwaitingConnectMessage:\n *       console.log(`Session ${session.sessionId} started at ${session.sessionStartTime}`)\n *       break\n *     case RoomSessionState.Connected:\n *       console.log(`Connected session has ${session.outstandingDataMessages.length} pending messages`)\n *       break\n *     case RoomSessionState.AwaitingRemoval:\n *       console.log(`Session will be removed at ${session.cancellationTime}`)\n *       break\n *   }\n * }\n * ```\n *\n * @internal\n */\nexport type RoomSession<R extends UnknownRecord, Meta> =\n\t| (RoomSessionBase<R, Meta> & {\n\t\t\t/** Current state of the session */\n\t\t\tstate: typeof RoomSessionState.AwaitingConnectMessage\n\t\t\t/** Timestamp when the session was created */\n\t\t\tsessionStartTime: number\n\t  })\n\t| (RoomSessionBase<R, Meta> & {\n\t\t\t/** Current state of the session */\n\t\t\tstate: typeof RoomSessionState.AwaitingRemoval\n\t\t\t/** Timestamp when the session was marked for removal */\n\t\t\tcancellationTime: number\n\t  })\n\t| (RoomSessionBase<R, Meta> & {\n\t\t\t/** Current state of the session */\n\t\t\tstate: typeof RoomSessionState.Connected\n\t\t\t/** Serialized schema information for this connected session */\n\t\t\tserializedSchema: SerializedSchema\n\t\t\t/** Timestamp of the last interaction or message from this session */\n\t\t\tlastInteractionTime: number\n\t\t\t/** Timer for debouncing operations, if active */\n\t\t\tdebounceTimer: ReturnType<typeof setTimeout> | null\n\t\t\t/** Queue of data messages waiting to be sent to this session */\n\t\t\toutstandingDataMessages: TLSocketServerSentDataEvent<R>[]\n\t  })\n"],
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