@probe.gl/stats/dist/index.cjs.map

Stats object for reporting performance statistics

{
  "version": 3,
  "sources": ["../src/index.ts", "../src/utils/hi-res-timestamp.ts", "../src/lib/stat.ts", "../src/lib/stats.ts"],
  "sourcesContent": ["export {default as Stats} from './lib/stats';\nexport {default as Stat} from './lib/stat';\n\n// UTILITIES\nexport {default as _getHiResTimestamp} from './utils/hi-res-timestamp';\n", "// Copyright (c) 2017 Uber Technologies, Inc.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to deal\n// in the Software without restriction, including without limitation the rights\n// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n// copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n// all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n// THE SOFTWARE.\n\nexport default function getHiResTimestamp(): number {\n  let timestamp;\n  // Get best timer available.\n  if (typeof window !== 'undefined' && window.performance) {\n    timestamp = window.performance.now();\n  } else if (typeof process !== 'undefined' && process.hrtime) {\n    const timeParts = process.hrtime();\n    timestamp = timeParts[0] * 1000 + timeParts[1] / 1e6;\n  } else {\n    timestamp = Date.now();\n  }\n\n  return timestamp;\n}\n", "import getHiResTimestamp from '../utils/hi-res-timestamp';\n\nexport default class Stat {\n  readonly name: string;\n  readonly type: string | undefined;\n  sampleSize: number = 1;\n  time: number = 0;\n  count: number = 0;\n  samples: number = 0;\n  lastTiming: number = 0;\n  lastSampleTime: number = 0;\n  lastSampleCount: number = 0;\n\n  _count: number = 0;\n  _time: number = 0;\n  _samples: number = 0;\n  _startTime: number = 0;\n  _timerPending: boolean = false;\n\n  constructor(name: string, type?: string) {\n    this.name = name;\n    this.type = type;\n    this.reset();\n  }\n\n  reset(): this {\n    this.time = 0;\n    this.count = 0;\n    this.samples = 0;\n    this.lastTiming = 0;\n    this.lastSampleTime = 0;\n    this.lastSampleCount = 0;\n    this._count = 0;\n    this._time = 0;\n    this._samples = 0;\n    this._startTime = 0;\n    this._timerPending = false;\n\n    return this;\n  }\n\n  setSampleSize(samples: number): this {\n    this.sampleSize = samples;\n    return this;\n  }\n\n  /** Call to increment count (+1) */\n  incrementCount(): this {\n    this.addCount(1);\n\n    return this;\n  }\n\n  /** Call to decrement count (-1) */\n  decrementCount(): this {\n    this.subtractCount(1);\n\n    return this;\n  }\n\n  /** Increase count */\n  addCount(value: number): this {\n    this._count += value;\n    this._samples++;\n    this._checkSampling();\n\n    return this;\n  }\n\n  /** Decrease count */\n  subtractCount(value: number): this {\n    this._count -= value;\n    this._samples++;\n    this._checkSampling();\n\n    return this;\n  }\n\n  /** Add an arbitrary timing and bump the count */\n  addTime(time: number): this {\n    this._time += time;\n    this.lastTiming = time;\n    this._samples++;\n    this._checkSampling();\n\n    return this;\n  }\n\n  /** Start a timer */\n  timeStart(): this {\n    this._startTime = getHiResTimestamp();\n    this._timerPending = true;\n\n    return this;\n  }\n\n  /** End a timer. Adds to time and bumps the timing count. */\n  timeEnd(): this {\n    if (!this._timerPending) {\n      return this;\n    }\n    this.addTime(getHiResTimestamp() - this._startTime);\n    this._timerPending = false;\n    this._checkSampling();\n\n    return this;\n  }\n\n  getSampleAverageCount(): number {\n    return this.sampleSize > 0 ? this.lastSampleCount / this.sampleSize : 0;\n  }\n\n  /** Calculate average time / count for the previous window */\n  getSampleAverageTime(): number {\n    return this.sampleSize > 0 ? this.lastSampleTime / this.sampleSize : 0;\n  }\n\n  /** Calculate counts per second for the previous window */\n  getSampleHz(): number {\n    return this.lastSampleTime > 0 ? this.sampleSize / (this.lastSampleTime / 1000) : 0;\n  }\n\n  getAverageCount(): number {\n    return this.samples > 0 ? this.count / this.samples : 0;\n  }\n\n  /** Calculate average time / count */\n  getAverageTime(): number {\n    return this.samples > 0 ? this.time / this.samples : 0;\n  }\n\n  /** Calculate counts per second */\n  getHz(): number {\n    return this.time > 0 ? this.samples / (this.time / 1000) : 0;\n  }\n\n  _checkSampling(): void {\n    if (this._samples === this.sampleSize) {\n      this.lastSampleTime = this._time;\n      this.lastSampleCount = this._count;\n      this.count += this._count;\n      this.time += this._time;\n      this.samples += this._samples;\n      this._time = 0;\n      this._count = 0;\n      this._samples = 0;\n    }\n  }\n}\n", "// probe.gl, MIT license\n\nimport Stat from './stat';\n\ntype TableEntry = {\n  time: number;\n  count: number;\n  average: number;\n  hz: number;\n};\n\n/** A \"bag\" of `Stat` objects, can be visualized using `StatsWidget` */\nexport default class Stats {\n  readonly id: string;\n  readonly stats: Record<string, Stat> = {};\n\n  constructor(options: {id: string; stats?: Stats | Stat[] | {name: string; type?: string}[]}) {\n    this.id = options.id;\n    this.stats = {};\n\n    this._initializeStats(options.stats);\n\n    Object.seal(this);\n  }\n\n  /** Acquire a stat. Create if it doesn't exist. */\n  get(name: string, type: string = 'count'): Stat {\n    return this._getOrCreate({name, type});\n  }\n\n  get size(): number {\n    return Object.keys(this.stats).length;\n  }\n\n  /** Reset all stats */\n  reset(): this {\n    for (const stat of Object.values(this.stats)) {\n      stat.reset();\n    }\n\n    return this;\n  }\n\n  forEach(fn: (stat: Stat) => void): void {\n    for (const stat of Object.values(this.stats)) {\n      fn(stat);\n    }\n  }\n\n  getTable(): Record<string, TableEntry> {\n    const table: Record<string, TableEntry> = {};\n    this.forEach(stat => {\n      table[stat.name] = {\n        time: stat.time || 0,\n        count: stat.count || 0,\n        average: stat.getAverageTime() || 0,\n        hz: stat.getHz() || 0\n      };\n    });\n\n    return table;\n  }\n\n  _initializeStats(stats: Stats | Stat[] | {name: string; type?: string}[] = []): void {\n    stats.forEach(stat => this._getOrCreate(stat));\n  }\n\n  _getOrCreate(stat: Stat | {name: string, type?: string}): Stat {\n    const {name, type} = stat;\n    let result = this.stats[name];\n    if (!result) {\n      if (stat instanceof Stat) {\n        result = stat;\n      } else {\n        result = new Stat(name, type);\n      }\n      this.stats[name] = result;\n    }\n    return result;\n  }\n}\n"],
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}