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const {
ObjectDefineProperties,
ReflectConstruct,
Symbol,
SymbolToStringTag,
} = primordials;
const {
codes: {
ERR_ILLEGAL_CONSTRUCTOR,
ERR_MISSING_ARGS
}
} = require('internal/errors');
const {
EventTarget,
Event,
kTrustEvent,
initEventTarget,
defineEventHandler,
} = require('internal/event_target');
const { now } = require('internal/perf/utils');
const { markResourceTiming } = require('internal/perf/resource_timing');
const {
mark,
measure,
clearMarkTimings,
} = require('internal/perf/usertiming');
const {
clearEntriesFromBuffer,
filterBufferMapByNameAndType,
setResourceTimingBufferSize,
setDispatchBufferFull,
} = require('internal/perf/observe');
const { eventLoopUtilization } = require('internal/perf/event_loop_utilization');
const nodeTiming = require('internal/perf/nodetiming');
const timerify = require('internal/perf/timerify');
const { customInspectSymbol: kInspect, kEnumerableProperty, kEmptyObject } = require('internal/util');
const { inspect } = require('util');
const { validateInternalField } = require('internal/validators');
const {
getTimeOriginTimestamp
} = internalBinding('performance');
const kPerformanceBrand = Symbol('performance');
class Performance extends EventTarget {
constructor() {
throw new ERR_ILLEGAL_CONSTRUCTOR();
}
[kInspect](depth, options) {
if (depth < 0) return this;
const opts = {
...options,
depth: options.depth == null ? null : options.depth - 1
};
return `Performance ${inspect({
nodeTiming: this.nodeTiming,
timeOrigin: this.timeOrigin,
}, opts)}`;
}
clearMarks(name = undefined) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (name !== undefined) {
name = `${name}`;
}
clearMarkTimings(name);
clearEntriesFromBuffer('mark', name);
}
clearMeasures(name = undefined) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (name !== undefined) {
name = `${name}`;
}
clearEntriesFromBuffer('measure', name);
}
clearResourceTimings(name = undefined) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (name !== undefined) {
name = `${name}`;
}
clearEntriesFromBuffer('resource', name);
}
getEntries() {
validateInternalField(this, kPerformanceBrand, 'Performance');
return filterBufferMapByNameAndType();
}
getEntriesByName(name) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (arguments.length === 0) {
throw new ERR_MISSING_ARGS('name');
}
name = `${name}`;
return filterBufferMapByNameAndType(name, undefined);
}
getEntriesByType(type) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (arguments.length === 0) {
throw new ERR_MISSING_ARGS('type');
}
type = `${type}`;
return filterBufferMapByNameAndType(undefined, type);
}
mark(name, options = kEmptyObject) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (arguments.length === 0) {
throw new ERR_MISSING_ARGS('name');
}
return mark(name, options);
}
measure(name, startOrMeasureOptions = kEmptyObject, endMark = undefined) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (arguments.length === 0) {
throw new ERR_MISSING_ARGS('name');
}
return measure(name, startOrMeasureOptions, endMark);
}
now() {
validateInternalField(this, kPerformanceBrand, 'Performance');
return now();
}
setResourceTimingBufferSize(maxSize) {
validateInternalField(this, kPerformanceBrand, 'Performance');
if (arguments.length === 0) {
throw new ERR_MISSING_ARGS('maxSize');
}
return setResourceTimingBufferSize(maxSize);
}
get timeOrigin() {
validateInternalField(this, kPerformanceBrand, 'Performance');
return getTimeOriginTimestamp();
}
toJSON() {
validateInternalField(this, kPerformanceBrand, 'Performance');
return {
nodeTiming: this.nodeTiming,
timeOrigin: this.timeOrigin,
eventLoopUtilization: this.eventLoopUtilization(),
};
}
}
ObjectDefineProperties(Performance.prototype, {
clearMarks: kEnumerableProperty,
clearMeasures: kEnumerableProperty,
clearResourceTimings: kEnumerableProperty,
getEntries: kEnumerableProperty,
getEntriesByName: kEnumerableProperty,
getEntriesByType: kEnumerableProperty,
mark: kEnumerableProperty,
measure: kEnumerableProperty,
now: kEnumerableProperty,
timeOrigin: kEnumerableProperty,
toJSON: kEnumerableProperty,
setResourceTimingBufferSize: kEnumerableProperty,
[SymbolToStringTag]: {
__proto__: null,
writable: false,
enumerable: false,
configurable: true,
value: 'Performance',
},
// Node.js specific extensions.
eventLoopUtilization: {
__proto__: null,
configurable: true,
// Node.js specific extensions.
enumerable: false,
writable: true,
value: eventLoopUtilization,
},
nodeTiming: {
__proto__: null,
configurable: true,
// Node.js specific extensions.
enumerable: false,
writable: true,
value: nodeTiming,
},
// In the browser, this function is not public. However, it must be used inside fetch
// which is a Node.js dependency, not a internal module
markResourceTiming: {
__proto__: null,
configurable: true,
// Node.js specific extensions.
enumerable: false,
writable: true,
value: markResourceTiming,
},
timerify: {
__proto__: null,
configurable: true,
// Node.js specific extensions.
enumerable: false,
writable: true,
value: timerify,
},
});
defineEventHandler(Performance.prototype, 'resourcetimingbufferfull');
function createPerformance() {
return ReflectConstruct(function Performance() {
initEventTarget(this);
this[kPerformanceBrand] = true;
}, [], Performance);
}
const performance = createPerformance();
function dispatchBufferFull(type) {
const event = new Event(type, {
[kTrustEvent]: true
});
performance.dispatchEvent(event);
}
setDispatchBufferFull(dispatchBufferFull);
module.exports = {
Performance,
performance,
};
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