PyObjects are leaking memory when used in a synchronous loop

[mmomtchev]

This code is leaking memory:

for (let i = 0; i < 1000; i++) {
  const a = PyObject.list([1]);
  a.get('__getitem__');
}

[mmomtchev]

Alas, this is a general Node.js problem which does not have a simple solution: nodejs/node-addon-api#1140

The problem is not that serious as it might appear because:

• Server code is never synchronous
• Client code usually does not run forever

Still, if doing very heavy computation that requires periodic cleanup of stale objects, the two profiling targets have been transformed to async code - which completely solves this problem

[mmomtchev]

It seems that there has been progress on this issue in Node.js but it requires that the addon explicitly supports the new code.