All files / lib/internal/perf performance_entry.js

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'use strict';
 
const {
  ObjectSetPrototypeOf,
  Symbol,
} = primordials;
 
const {
  codes: {
    ERR_ILLEGAL_CONSTRUCTOR,
  }
} = require('internal/errors');
 
const {
  customInspectSymbol: kInspect,
} = require('internal/util');
 
const { inspect } = require('util');
 
const kName = Symbol('kName');
const kType = Symbol('kType');
const kStart = Symbol('kStart');
const kDuration = Symbol('kDuration');
const kDetail = Symbol('kDetail');
const kBufferNext = Symbol('kBufferNext');
 
function isPerformanceEntry(obj) {
  return obj?.[kName] !== undefined;
}
 
class PerformanceEntry {
  constructor() {
    throw new ERR_ILLEGAL_CONSTRUCTOR();
  }
 
  get name() { return this[kName]; }
 
  get entryType() { return this[kType]; }
 
  get startTime() { return this[kStart]; }
 
  get duration() { return this[kDuration]; }
 
  get detail() { return this[kDetail]; }
 
  [kInspect](depth, options) {
    if (depth < 0) return this;

    const opts = {
      ...options,
      depth: options.depth == null ? null : options.depth - 1
    };

    return `${this.constructor.name} ${inspect(this.toJSON(), opts)}`;
  }
 
  toJSON() {
    return {
      name: this.name,
      entryType: this.entryType,
      startTime: this.startTime,
      duration: this.duration,
      detail: this.detail,
    };
  }
}
 
class InternalPerformanceEntry {
  constructor(name, type, start, duration, detail) {
    this[kName] = name;
    this[kType] = type;
    this[kStart] = start;
    this[kDuration] = duration;
    this[kDetail] = detail;
    this[kBufferNext] = null;
  }
}
 
InternalPerformanceEntry.prototype.constructor = PerformanceEntry;
ObjectSetPrototypeOf(
  InternalPerformanceEntry.prototype,
  PerformanceEntry.prototype);
 
module.exports = {
  InternalPerformanceEntry,
  PerformanceEntry,
  isPerformanceEntry,
  kBufferNext,
};