Provides detailed network timing data regarding the loading of an application's resources.
The constructor of this class is not exposed to users directly.
class
perf_hooks.PerformanceResourceTiming
- readonly connectEnd: number
The high resolution millisecond timestamp representing the time immediately after Node.js finishes establishing the connection to the server to retrieve the resource.
- readonly connectStart: number
The high resolution millisecond timestamp representing the time immediately before Node.js starts to establish the connection to the server to retrieve the resource.
- readonly decodedBodySize: number
A number representing the size (in octets) received from the fetch (HTTP or cache), of the message body, after removing any applied content-codings.
- readonly domainLookupEnd: number
The high resolution millisecond timestamp representing the time immediately after the Node.js finished the domain name lookup for the resource.
- readonly domainLookupStart: number
The high resolution millisecond timestamp immediately before the Node.js starts the domain name lookup for the resource.
- readonly duration: number
The total number of milliseconds elapsed for this entry. This value will not be meaningful for all Performance Entry types.
- readonly encodedBodySize: number
A number representing the size (in octets) received from the fetch (HTTP or cache), of the payload body, before removing any applied content-codings.
- readonly entryType: 'resource'
The type of the performance entry. It may be one of:
'node'(Node.js only)'mark'(available on the Web)'measure'(available on the Web)'gc'(Node.js only)'function'(Node.js only)'http2'(Node.js only)'http'(Node.js only)
- readonly fetchStart: number
The high resolution millisecond timestamp immediately before the Node.js starts to fetch the resource.
- readonly redirectEnd: number
The high resolution millisecond timestamp that will be created immediately after receiving the last byte of the response of the last redirect.
- readonly redirectStart: number
The high resolution millisecond timestamp that represents the start time of the fetch which initiates the redirect.
- readonly requestStart: number
The high resolution millisecond timestamp representing the time immediately before Node.js receives the first byte of the response from the server.
- readonly responseEnd: number
The high resolution millisecond timestamp representing the time immediately after Node.js receives the last byte of the resource or immediately before the transport connection is closed, whichever comes first.
- readonly secureConnectionStart: number
The high resolution millisecond timestamp representing the time immediately before Node.js starts the handshake process to secure the current connection.
- readonly startTime: number
The high resolution millisecond timestamp marking the starting time of the Performance Entry.
- readonly transferSize: number
A number representing the size (in octets) of the fetched resource. The size includes the response header fields plus the response payload body.
- readonly workerStart: number
The high resolution millisecond timestamp at immediately before dispatching the
fetchrequest. If the resource is not intercepted by a worker the property will always return 0. Returns a
objectthat is the JSON representation of thePerformanceResourceTimingobject