split-time/src/entry-list.ts

A JavaScript library for measuring FCP, LCP. Report real user measurements to tracking tool.

export default class EntryList extends Array<PerformanceEntry> implements PerformanceObserverEntryList {
  private _entries: PerformanceEntry[]

  public constructor(entries: PerformanceEntry[]) {
    super(...entries)
    this._entries = entries
  }

  public getEntries(): PerformanceEntry[] {
    return this._entries
  }

  public getEntriesByType(type: string): PerformanceEntry[] {
    return this._entries.filter((e): boolean => e.entryType === type)
  }

  public getEntriesByName(name: string, type?: string): PerformanceEntry[] {
    return this._entries
      .filter((e): boolean => e.name === name)
      .filter((e): boolean => (type ? e.entryType === type : true))
  }
}