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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
"use strict";
const {
ADD_REQUEST,
ADD_TIMING_MARKER,
CLEAR_TIMING_MARKERS,
CLEAR_REQUESTS,
function TimingMarkers() {
return {
firstDocumentDOMContentLoadedTimestamp: -1,
firstDocumentLoadTimestamp: -1,
firstDocumentRequestStartTimestamp: +Infinity,
};
}
function addRequest(state, action) {
const nextState = { ...state };
const { startedMs } = action.data;
if (startedMs < state.firstDocumentRequestStartTimestamp) {
nextState.firstDocumentRequestStartTimestamp = startedMs;
}
return nextState;
}
function addTimingMarker(state, action) {
state = { ...state };
if (
action.marker.name === "dom-interactive" &&
state.firstDocumentDOMContentLoadedTimestamp === -1
) {
state.firstDocumentDOMContentLoadedTimestamp = action.marker.time;
return state;
}
if (
action.marker.name === "dom-complete" &&
state.firstDocumentLoadTimestamp === -1
) {
state.firstDocumentLoadTimestamp = action.marker.time;
return state;
}
return state;
}
function clearTimingMarkers() {
return new TimingMarkers();
}
function timingMarkers(state = new TimingMarkers(), action) {
switch (action.type) {
case ADD_REQUEST:
return addRequest(state, action);
case ADD_TIMING_MARKER:
return addTimingMarker(state, action);
case CLEAR_REQUESTS:
case CLEAR_TIMING_MARKERS:
return clearTimingMarkers(state);
default:
return state;
}
}
module.exports = {
TimingMarkers,
timingMarkers,
};