1774005 - [meta] Interventions for InstallTrigger-related site breakage

Status: ASSIGNED

(Web Compatibility :: Interventions, task)

Description

[Dennis Schubert [:denschub]]

Let's have a metabug for all interventions related to InstallTrigger, as that makes it easier for us to keep an eye on everything.

Comment 1

[Simon Pieters [:zcorpan]]

It seems like typeof InstallTrigger !== 'undefined' is a very common way to detect Firefox. Here's a stackoverflow answer recommending it:

https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browsers

Looking at a 1% sample of httparchive gives 10282 results (which is ~8.9% of pages) including pages in rank bucket 1000:

https://docs.google.com/spreadsheets/d/1VUdR2zfiqQgCW9D9qf5HGmACfX4Jcei-yL-RRNw3TfQ/edit?usp=sharing

For the browser detection to continue to work, InstallTrigger needs to exist. (The value could be an empty object or null.)