process.cwd(),
require.main.filename,
path.dirname(process.argv[1]),
path.resolve(path.dirname(require.main.filename), '../../../'), // inside electron
path.resolve(path.dirname(require.main.filename), '../../../app.asar.unpacked/')
a local .${appname}rc or the first found looking in ./ ../ ../../ ../../../ etc.
$HOME/.${appname}rc
$HOME/.${appname}/config
$HOME/.config/${appname}
$HOME/.config/${appname}/config
/etc/${appname}rc
/etc/${appname}/config