@colyseus/core/build/utils/DevMode.cjs.map

Multiplayer Framework for Node.js.

{
  "version": 3,
  "sources": ["../../src/utils/DevMode.ts"],
  "sourcesContent": ["import fs from 'fs';\nimport path from 'path';\nimport { type Schema, MapSchema, ArraySchema, SetSchema, CollectionSchema, $childType, $changes } from '@colyseus/schema';\nimport { logger } from '../Logger.ts';\nimport { debugAndPrintError, debugDevMode } from '../Debug.ts';\nimport { getLocalRoomById, handleCreateRoom, presence, remoteRoomCall } from '../MatchMaker.ts';\nimport type { Room } from '../Room.ts';\n\nconst DEVMODE_CACHE_FILE_PATH = path.resolve(\".devmode.json\");\n\nexport let isDevMode: boolean = false;\n\nexport function hasDevModeCache() {\n  return fs.existsSync(DEVMODE_CACHE_FILE_PATH);\n}\n\nexport function getDevModeCache() {\n  return JSON.parse(fs.readFileSync(DEVMODE_CACHE_FILE_PATH, 'utf8')) || {};\n}\n\nexport function writeDevModeCache(cache: any) {\n  fs.writeFileSync(DEVMODE_CACHE_FILE_PATH, JSON.stringify(cache, null, 2), 'utf8');\n}\n\nexport function setDevMode(bool: boolean) {\n  isDevMode = bool;\n}\n\nexport async function reloadFromCache() {\n  const roomHistoryList = Object.entries(await presence.hgetall(getRoomRestoreListKey()));\n  debugDevMode(\"rooms to restore: %i\", roomHistoryList.length);\n\n  for (const [roomId, value] of roomHistoryList) {\n    const roomHistory = JSON.parse(value);\n    debugDevMode(\"restoring room %s (%s)\", roomHistory.roomName, roomId);\n\n    const recreatedRoomListing = await handleCreateRoom(roomHistory.roomName, roomHistory.clientOptions, roomId);\n    const recreatedRoom = getLocalRoomById(recreatedRoomListing.roomId);\n\n    // Restore previous state\n    if (roomHistory.hasOwnProperty(\"state\")) {\n      try {\n        const rawState = JSON.parse(roomHistory.state);\n        logger.debug(`\uD83D\uDCCB room '${roomId}' state =>`, rawState);\n\n        (recreatedRoom.state as Schema).restore(rawState);\n\n        // Restore the encoder's nextUniqueId so refIds increase\n        // monotonically across HMR cycles. Without this, restore()\n        // always produces the same refIds (0,1,2,3...) and onJoin()\n        // always assigns the same next refIds (4,5...), causing the\n        // client decoder to reuse stale instances on the 2nd+ cycle.\n        if (roomHistory.nextRefId !== undefined) {\n          const encoderRoot = recreatedRoom.state[$changes]?.root;\n          if (encoderRoot && roomHistory.nextRefId > encoderRoot['nextUniqueId']) {\n            encoderRoot['nextUniqueId'] = roomHistory.nextRefId;\n          }\n        }\n      } catch (e: any) {\n        debugAndPrintError(`\u274C couldn't restore room '${roomId}' state:\\n${e.stack}`);\n      }\n    }\n\n    // Reserve seats for clients from cached history.\n    // Skip entries without a reconnectionToken \u2014 these are stale\n    // seats from allowReconnection() where the client already left\n    // (e.g. page refresh). Restoring them would block room disposal.\n    if (roomHistory.clients) {\n      for (const clientData of roomHistory.clients) {\n        const { sessionId, reconnectionToken } = clientData;\n        if (!reconnectionToken) { continue; }\n        // TODO: need to restore each client's StateView as well\n        await remoteRoomCall(recreatedRoomListing.roomId, '_reserveSeat', [sessionId, {}, {}, recreatedRoom.seatReservationTimeout, false, reconnectionToken]);\n      }\n    }\n\n    // call `onRestoreRoom` with custom 'cache'd property.\n    recreatedRoom.onRestoreRoom?.(roomHistory[\"cache\"]);\n\n    logger.debug(`\uD83D\uDD04 room '${roomId}' has been restored with ${roomHistory.clients?.length || 0} reserved seats: ${roomHistory.clients?.map((c: any) => c.sessionId).join(\", \")}`);\n  }\n\n  if (roomHistoryList.length > 0) {\n    logger.debug(\"\u2705\", roomHistoryList.length, \"room(s) have been restored.\");\n  }\n}\n\nexport async function cacheRoomHistory(rooms: { [roomId: string]: Room }) {\n  for (const room of Object.values(rooms)) {\n    const roomHistoryResult = await presence.hget(getRoomRestoreListKey(), room.roomId);\n    if (roomHistoryResult) {\n      try {\n        const roomHistory = JSON.parse(roomHistoryResult);\n\n        // custom cache method\n        roomHistory[\"cache\"] = room.onCacheRoom?.();\n\n        // encode state\n        debugDevMode(\"caching room %s (%s)\", room.roomName, room.roomId);\n\n        if (room.state) {\n          roomHistory[\"state\"] = JSON.stringify(room.state);\n\n          // Cache the encoder's nextUniqueId so it can be restored.\n          // This ensures refIds increase monotonically across HMR cycles,\n          // preventing the client decoder from reusing stale refs that\n          // happen to have the same refId as newly created instances.\n          const encoderRoot = room.state[$changes]?.root;\n          if (encoderRoot) {\n            roomHistory[\"nextRefId\"] = encoderRoot['nextUniqueId'];\n          }\n        }\n\n        // cache active clients with their reconnection tokens\n        // TODO: need to cache each client's StateView as well\n        const activeClients = room.clients.map((client) => ({\n          sessionId: client.sessionId,\n          reconnectionToken: client.reconnectionToken,\n        }));\n\n        // collect active client sessionIds to avoid duplicates\n        const activeSessionIds = new Set(activeClients.map((c) => c.sessionId));\n\n        // also cache reserved seats (they don't have reconnectionTokens yet)\n        // filter out reserved seats that are already active clients (from devMode reconnection)\n        const reservedSeats = Object.keys(room['_reservedSeats'])\n          .filter((sessionId) => !activeSessionIds.has(sessionId))\n          .map((sessionId) => ({\n            sessionId,\n            reconnectionToken: undefined,\n          }));\n\n        roomHistory[\"clients\"] = activeClients.concat(reservedSeats);\n\n        await presence.hset(getRoomRestoreListKey(), room.roomId, JSON.stringify(roomHistory));\n\n        // Rewrite updated room history\n        logger.debug(`\uD83D\uDCBE caching room '${room.roomId}' (clients: ${room.clients.length}, has state: ${roomHistory[\"state\"] !== undefined ? \"yes\" : \"no\"})`);\n\n      } catch (e: any) {\n        debugAndPrintError(`\u274C couldn't cache room '${room.roomId}', due to:\\n${e.stack}`);\n      }\n    }\n  }\n}\n\nexport async function getPreviousProcessId(hostname: string = '') {\n  return await presence.hget(getProcessRestoreKey(), hostname);\n}\n\nexport function getRoomRestoreListKey() {\n  return 'roomhistory';\n}\n\nexport function getProcessRestoreKey() {\n  return 'processhistory';\n}\n"],
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