td.replace before it vs td.replace inside of it

[nohaibogdan1]

When I call td.replace(module) outside of it (inside of a describe) node gives this error.
Error: testdouble.js - td.replace - No "undefined" property was found.

The error goes away if I do td.replace(module, 'property')

But inside of it td.replace(module) will work.

[searls]

td.replace should only be used in the context of running a test, so inside an it or beforeEach, but not inside a describe callback (which is suite-definition time, not test-run-time) or at the top of a module (which is module-load-time). See the example in the docs