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const {
ObjectDefineProperties,
ObjectSetPrototypeOf,
} = primordials;
const { PerformanceEntry } = require('internal/perf/performance_entry');
const {
now,
getMilestoneTimestamp,
} = require('internal/perf/utils');
const {
customInspectSymbol: kInspect,
} = require('internal/util');
const { inspect } = require('util');
const {
constants: {
NODE_PERFORMANCE_MILESTONE_NODE_START,
NODE_PERFORMANCE_MILESTONE_V8_START,
NODE_PERFORMANCE_MILESTONE_LOOP_START,
NODE_PERFORMANCE_MILESTONE_LOOP_EXIT,
NODE_PERFORMANCE_MILESTONE_BOOTSTRAP_COMPLETE,
NODE_PERFORMANCE_MILESTONE_ENVIRONMENT
},
loopIdleTime,
} = internalBinding('performance');
class PerformanceNodeTiming {
constructor() {
ObjectDefineProperties(this, {
name: {
enumerable: true,
configurable: true,
value: 'node'
},
entryType: {
enumerable: true,
configurable: true,
value: 'node'
},
startTime: {
enumerable: true,
configurable: true,
value: 0
},
duration: {
enumerable: true,
configurable: true,
get: now
},
nodeStart: {
enumerable: true,
configurable: true,
get() {
return getMilestoneTimestamp(NODE_PERFORMANCE_MILESTONE_NODE_START);
}
},
v8Start: {
enumerable: true,
configurable: true,
get() {
return getMilestoneTimestamp(NODE_PERFORMANCE_MILESTONE_V8_START);
}
},
environment: {
enumerable: true,
configurable: true,
get() {
return getMilestoneTimestamp(NODE_PERFORMANCE_MILESTONE_ENVIRONMENT);
}
},
loopStart: {
enumerable: true,
configurable: true,
get() {
return getMilestoneTimestamp(NODE_PERFORMANCE_MILESTONE_LOOP_START);
}
},
loopExit: {
enumerable: true,
configurable: true,
get() {
return getMilestoneTimestamp(NODE_PERFORMANCE_MILESTONE_LOOP_EXIT);
}
},
bootstrapComplete: {
enumerable: true,
configurable: true,
get() {
return getMilestoneTimestamp(
NODE_PERFORMANCE_MILESTONE_BOOTSTRAP_COMPLETE);
}
},
idleTime: {
enumerable: true,
configurable: true,
get: loopIdleTime,
}
});
}
[kInspect](depth, options) {
if (depth < 0) return this;
const opts = {
...options,
depth: options.depth == null ? null : options.depth - 1
};
return `PerformanceNodeTiming ${inspect(this.toJSON(), opts)}`;
}
toJSON() {
return {
name: 'node',
entryType: 'node',
startTime: this.startTime,
duration: this.duration,
nodeStart: this.nodeStart,
v8Start: this.v8Start,
bootstrapComplete: this.bootstrapComplete,
environment: this.environment,
loopStart: this.loopStart,
loopExit: this.loopExit,
idleTime: this.idleTime,
};
}
}
ObjectSetPrototypeOf(
PerformanceNodeTiming.prototype,
PerformanceEntry.prototype);
module.exports = new PerformanceNodeTiming();
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