Retrieving properties

Question

I would like to know all the properties /functions associated with the ctx object of canvasRendringContext2d.but it showing empty..
Heres what i tried.
https://code.sololearn.com/WkdD3u1C52dL/?ref=app

Answer 1

https://code.sololearn.com/W8aH2NLBU6Qk/?ref=app

Answer 2

try.
for(let a in ctx)

for...in will take the key from the object

Answer 3

Taste nope didnt work