93   private readonly engineId: string;  property in TraceController
96   constructor(engineId: string) {
98     this.engineId = engineId;
108     const engineCfg = assertExists(globals.state.engines[this.engineId]);
114                 engineId: this.engineId,
143           if (trackCfg.engineId !== this.engineId) continue;
224           new HttpRpcEngine(this.engineId, LoadingManager.getInstance);
235           this.engineId,
236           createWasmEngine(this.engineId),
241       engineId: this.engineId,
245     const engineCfg = assertExists(globals.state.engines[this.engineId]);
361     const actions = await decideTracks(this.engineId, engine);