I’ve never developed extensions for Chrome but I’m really curious, how does one save data associated with a specific window (or tab) that would persist across sessions? My googlefu fails me and I feel like I’m missing something.
Only Firefox supports those functions. How do you do things like that in Chrome?
Never mind, I misread your question.
Googling “chrome tab id persistent” (without quotes) found:
It’s 8 years old but seems to answer the question.
(use the persistent ID in conjunction with extension storage)
What have you found?
Wow the “solution” is far more complicated that I thought it could be. I almost can’t believe this is what people have to resort to.
Nothing. I’ve been searching for “window” instead of “tab”.
Thank you for your findings 
Always helpful to learn new patterns.