Filter out repeated seek and volume change events happening when user holds down the player controls (close #1218)

[matus-tomlein]

Issue #1218

This PR adds the ability to filter out repeated seek and volume change events in the media plugin that occur frequently when the user is scrubbing the controls in players (e.g., in the Vimeo or HTML5 players).

The algorithm to filter out the events is very simple – if a seek event is tracked, it is kept in a buffer (not tracked) until an event other than a seek event is tracked or until the media tracking ends (endMediaTracking is called).

So if the following events are tracked:

• play
• seek start 1
• seek end 2
• seek start 2
• seek end 2
• pause

By filtering events, the result will be:

• play
• seek start 1
• seek end 2
• pause

Filtering out repeated seek and volume change events is enabled by default, but it is possible to disable as follows:

startMediaTracking({ id, filterOutRepeatedEvents: false });

or like this:

startMediaTracking({ id, filterOutRepeatedEvents: { seekEvents: false });

[bundlemon]

BundleMon

Files added (6)

Status	Path	Size	Limits
✅	libraries/browser-tracker-core/dist/index.mod ule.js	+25.07KB	26KB / +10%
✅	trackers/javascript-tracker/dist/sp.js	+24.03KB	25KB / +10%
✅	trackers/javascript-tracker/dist/sp.lite.js	+14.7KB	15KB / +10%
✅	trackers/browser-tracker/dist/index.umd.min.j s	+14.55KB	15KB / +10%
✅	libraries/tracker-core/dist/index.module.js	+13.35KB	15KB / +10%
✅	trackers/browser-tracker/dist/index.module.js	+3.46KB	5KB / +10%

Total files change +95.15KB 0%

Final result: ✅

View report in BundleMon website ➡️

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Current branch size history

[greg-el]

Looks great! Tested it with the Vimeo plugin and it's working nicely!