The mentioned 2ality blog by Axel Rauschmayer was an extremely detailed and thorough look at TS and JS specs. So right up your alley. Same with Josh W Comeau.

https://2ality.com/

https://www.joshwcomeau.com/

I for one mourn the loss of these and other blogs and am not exactly sure the trade was worth it. Not with the cretins in charge.