Check if a cell is defined

[mootari]

@mootari

I couldn’t come up with a better solution

… but @edeboursetty did! Check out this thread:

Leaking the Observable runtime in a module

Hi, just thought I would post this here, cause I don’t think that’s a major security problem, but I managed to leak the runtime object in a notebook by importing a broken module that contained an “eval” statement. See: and