PoC Project: https://github.com/ToadKing/electron-native-module-poc (The native module part is an exact copy of the example in the node-addon-api docs.)

The class example in the docs makes the constructor reference persistent using Napi::Persistent on module initialization. However, in Electron when a render process reloads a page, the native module is re-initialized without reloading the shared library itself. When a new constructor reference is loaded into the constructor variable it tries to delete the former reference, which causes a crash of the Electron render process.