[wafflebear]

You should be far more worried that desktop apps don't require permission before eavesdropping on your conversations using the microphone (including 3rd level sub-dependencies of that NPM module you installed), than that Android or iOS is secretly recording your conversations under the guise of "ok Google" or "Hello Siri".

Regardless of the device form factor, if you don't want the OS to have access to the microphone then you have to physically disable the microphone (but if you are that paranoid you should probably live in the woods away from all electronic devices).