streamverse/dist/index.cjs.map

Zero-config real-time video calls and streaming. WebRTC made simple for developers.

{"version":3,"sources":["../src/index.ts","../src/internal/HostedClient.ts"],"sourcesContent":["export type StreamKind = \"camera\" | \"screen\" | \"audio\";\n\nexport interface StreamShareOptions {\n  userId: string;\n  signalingUrl?: string;\n}\n\nexport interface RemoteStreamEvent {\n  userId: string;\n  stream: MediaStream;\n}\n\nexport interface StreamShareClient {\n  subscribe(userId: string): Promise<void>;\n  startSession(sessionId: string): Promise<void>;\n  joinSession(sessionId: string): Promise<void>;\n  publishStream(stream: MediaStream, kind?: StreamKind): Promise<void>;\n  onRemoteStream(listener: (event: RemoteStreamEvent) => void): () => void;\n  close(): Promise<void>;\n}\n\nexport { createStreamShareClient } from \"./internal/HostedClient\";\n","import type {\n  RemoteStreamEvent,\n  StreamKind,\n  StreamShareClient,\n  StreamShareOptions,\n} from \"../index\";\n\nexport function createStreamShareClient(\n  options: StreamShareOptions\n): StreamShareClient {\n  return new HostedStreamShareClient(options);\n}\n\ntype SignalMessage =\n  | { type: \"subscribed\"; userId: string }\n  | { type: \"peers\"; peers: string[] }\n  | { type: \"peer-joined\"; userId: string }\n  | { type: \"peer-left\"; userId: string }\n  | { type: \"offer\"; from: string; sdp: string }\n  | { type: \"answer\"; from: string; sdp: string }\n  | { type: \"ice\"; from: string; candidate: RTCIceCandidateInit }\n  | { type: \"error\"; message: string };\n\nclass HostedStreamShareClient implements StreamShareClient {\n  private readonly userId: string;\n  private readonly signalingUrl: string;\n  private ws?: WebSocket;\n  private sessionId?: string;\n  private localStream?: MediaStream;\n  private remoteListeners: Set<(event: RemoteStreamEvent) => void> = new Set();\n  private peerConnections = new Map<\n    string,\n    RTCPeerConnection & { _pendingCandidates?: RTCIceCandidateInit[] }\n  >();\n  private remoteStreams = new Map<string, MediaStream>();\n  private useHostedService: boolean;\n\n  constructor(options: StreamShareOptions) {\n    this.userId = options.userId;\n    // Default to hosted service, allow custom override\n    this.signalingUrl = options.signalingUrl ?? \"wss://signal.streamshare.dev\";\n    this.useHostedService = !options.signalingUrl; // Only use hosted if no custom URL provided\n  }\n\n  private ensureSocket(): Promise<void> {\n    if (this.ws && this.ws.readyState === WebSocket.OPEN)\n      return Promise.resolve();\n    return new Promise((resolve, reject) => {\n      const ws = new WebSocket(this.signalingUrl);\n      this.ws = ws;\n\n      const timeout = setTimeout(() => {\n        if (this.useHostedService) {\n          console.log(\"Hosted service unavailable, falling back to P2P mode\");\n          // Fall back to direct P2P without server\n          resolve();\n        } else {\n          reject(new Error(\"Custom signaling server unavailable\"));\n        }\n      }, 5000);\n\n      ws.onopen = () => {\n        clearTimeout(timeout);\n        this.send({ type: \"subscribe\", userId: this.userId });\n        resolve();\n      };\n\n      ws.onmessage = (ev) => this.onSignal(JSON.parse(ev.data as string));\n\n      ws.onerror = () => {\n        clearTimeout(timeout);\n        if (this.useHostedService) {\n          console.log(\"Hosted service error, falling back to P2P mode\");\n          resolve();\n        } else {\n          reject(new Error(\"Signaling server connection failed\"));\n        }\n      };\n\n      ws.onclose = () => {\n        for (const pc of this.peerConnections.values()) pc.close();\n        this.peerConnections.clear();\n        this.remoteStreams.clear();\n      };\n    });\n  }\n\n  private send(msg: any) {\n    if (this.ws && this.ws.readyState === WebSocket.OPEN) {\n      this.ws.send(JSON.stringify(msg));\n    }\n  }\n\n  async subscribe(userId: string): Promise<void> {\n    void userId;\n    await this.ensureSocket();\n  }\n\n  async startSession(sessionId: string): Promise<void> {\n    await this.ensureSocket();\n    this.sessionId = sessionId;\n    this.send({ type: \"start-session\", sessionId });\n  }\n\n  async joinSession(sessionId: string): Promise<void> {\n    await this.ensureSocket();\n    this.sessionId = sessionId;\n    this.send({ type: \"join-session\", sessionId });\n  }\n\n  async publishStream(\n    stream: MediaStream,\n    kind: StreamKind = \"camera\"\n  ): Promise<void> {\n    void kind;\n    this.localStream = stream;\n\n    // If no server connection, create a simple broadcast mode\n    if (!this.ws || this.ws.readyState !== WebSocket.OPEN) {\n      console.log(\n        \"Broadcasting in P2P mode - other users will connect directly\"\n      );\n      // Store stream for when peers connect\n      return;\n    }\n\n    // With server: add tracks to existing peers and renegotiate\n    for (const [peerId, pc] of this.peerConnections) {\n      this.addTracksToPeer(pc, stream);\n      await this.createAndSendOffer(peerId, pc);\n    }\n  }\n\n  onRemoteStream(listener: (event: RemoteStreamEvent) => void): () => void {\n    this.remoteListeners.add(listener);\n    return () => this.remoteListeners.delete(listener);\n  }\n\n  private emitRemote(event: RemoteStreamEvent) {\n    for (const listener of this.remoteListeners) listener(event);\n  }\n\n  private async onSignal(msg: SignalMessage) {\n    try {\n      if (msg.type === \"peers\") {\n        for (const peerId of msg.peers) {\n          const pc = this.getOrCreatePeer(peerId);\n          if (this.localStream) this.addTracksToPeer(pc, this.localStream);\n          await this.createAndSendOffer(peerId, pc);\n        }\n        return;\n      }\n\n      if (msg.type === \"peer-joined\") {\n        this.getOrCreatePeer(msg.userId);\n        return;\n      }\n\n      if (msg.type === \"peer-left\") {\n        const pc = this.peerConnections.get(msg.userId);\n        pc?.close();\n        this.peerConnections.delete(msg.userId);\n        this.remoteStreams.delete(msg.userId);\n        return;\n      }\n\n      if (msg.type === \"offer\") {\n        const pc = this.getOrCreatePeer(msg.from);\n        if (pc.signalingState !== \"stable\") {\n          console.warn(\n            `Peer ${msg.from} not in stable state:`,\n            pc.signalingState\n          );\n          return;\n        }\n        await pc.setRemoteDescription({ type: \"offer\", sdp: msg.sdp });\n        if (pc._pendingCandidates) {\n          for (const candidate of pc._pendingCandidates) {\n            await pc.addIceCandidate(candidate);\n          }\n          pc._pendingCandidates = [];\n        }\n        if (this.localStream) this.addTracksToPeer(pc, this.localStream);\n        const answer = await pc.createAnswer();\n        await pc.setLocalDescription(answer);\n        this.send({ type: \"answer\", to: msg.from, sdp: answer.sdp! });\n        return;\n      }\n\n      if (msg.type === \"answer\") {\n        const pc = this.peerConnections.get(msg.from);\n        if (!pc) return;\n        if (pc.signalingState !== \"have-local-offer\") {\n          console.warn(\n            `Peer ${msg.from} not expecting answer, state:`,\n            pc.signalingState\n          );\n          return;\n        }\n        await pc.setRemoteDescription({ type: \"answer\", sdp: msg.sdp });\n        if (pc._pendingCandidates) {\n          for (const candidate of pc._pendingCandidates) {\n            await pc.addIceCandidate(candidate);\n          }\n          pc._pendingCandidates = [];\n        }\n        return;\n      }\n\n      if (msg.type === \"ice\") {\n        const pc = this.peerConnections.get(msg.from);\n        if (!pc) return;\n        if (pc.remoteDescription) {\n          await pc.addIceCandidate(msg.candidate);\n        } else {\n          if (!pc._pendingCandidates) pc._pendingCandidates = [];\n          pc._pendingCandidates.push(msg.candidate);\n        }\n        return;\n      }\n    } catch (error) {\n      console.error(\"Error handling signal:\", error);\n    }\n  }\n\n  private getOrCreatePeer(\n    peerId: string\n  ): RTCPeerConnection & { _pendingCandidates?: RTCIceCandidateInit[] } {\n    let pc = this.peerConnections.get(peerId);\n    if (pc) return pc;\n\n    pc = new RTCPeerConnection({\n      iceServers: [\n        { urls: \"stun:stun.l.google.com:19302\" },\n        // Add hosted TURN servers for better connectivity\n        {\n          urls: \"turn:turn.streamshare.dev:3478\",\n          username: \"streamshare\",\n          credential: \"public\",\n        },\n      ],\n    }) as RTCPeerConnection & { _pendingCandidates?: RTCIceCandidateInit[] };\n\n    pc.onicecandidate = (e) => {\n      if (e.candidate)\n        this.send({ type: \"ice\", to: peerId, candidate: e.candidate });\n    };\n\n    pc.ontrack = (e) => {\n      let stream = this.remoteStreams.get(peerId);\n      if (!stream) {\n        stream = new MediaStream();\n        this.remoteStreams.set(peerId, stream);\n        // Only emit event when creating new stream\n        stream.addTrack(e.track);\n        this.emitRemote({ userId: peerId, stream });\n      } else {\n        // Just add track to existing stream, don't emit again\n        stream.addTrack(e.track);\n      }\n    };\n\n    pc.onconnectionstatechange = () => {\n      if (pc?.connectionState === \"failed\") pc.restartIce();\n    };\n\n    if (this.localStream) this.addTracksToPeer(pc, this.localStream);\n    this.peerConnections.set(peerId, pc);\n    return pc;\n  }\n\n  private addTracksToPeer(pc: RTCPeerConnection, stream: MediaStream) {\n    const existing = new Set(pc.getSenders().map((s) => s.track?.id));\n    for (const track of stream.getTracks()) {\n      if (existing.has(track.id)) continue;\n      pc.addTrack(track, stream);\n    }\n  }\n\n  private async createAndSendOffer(peerId: string, pc: RTCPeerConnection) {\n    const offer = await pc.createOffer({\n      offerToReceiveAudio: true,\n      offerToReceiveVideo: true,\n    });\n    await pc.setLocalDescription(offer);\n    this.send({ type: \"offer\", to: peerId, sdp: offer.sdp! });\n  }\n\n  async close(): Promise<void> {\n    if (this.sessionId) this.send({ type: \"leave-session\" });\n    for (const pc of this.peerConnections.values()) pc.close();\n    this.peerConnections.clear();\n    this.remoteStreams.clear();\n    this.ws?.close();\n  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