22 export class Traces {  class
23   private traces = new Set<Trace<{}>>();  property in Traces
26     this.traces.add(trace);
33     this.traces.forEach((trace) => {
38       // If multiple traces match the target type, return the longest one.
40       // - Two traces have the same type because one is a dump (e.g. SF trace + dump)
55     return Array.from(this.traces).filter(
61     this.traces.delete(trace);
65     return this.traces.has(trace);
68   sliceTime(start?: Timestamp, end?: Timestamp): Traces {
69     const slice = new Traces();
70     this.traces.forEach((trace) => {
76   sliceFrames(start?: AbsoluteFrameIndex, end?: AbsoluteFrameIndex): Traces {
77     const slice = new Traces();
78     this.traces.forEach((trace) => {
85     this.traces.forEach((trace, type) => {
99     callback: (traces: Traces, index: AbsoluteFrameIndex) => void,
104     this.traces.forEach((trace) => {
117   mapFrame<T>(callback: (traces: Traces, index: AbsoluteFrameIndex) => T): T[] {
119     this.forEachFrame((traces, index) => {
120       result.push(callback(traces, index));
126     return this.traces.size;
130     return this.traces.values();