I have a schema which has the following entry:

const schema = {
    dateFormat: {
        type: 'string',
        default: 'l',
        enum: ['l', 'L', 'MMM DD, YYYY', 'ddd, l', 'ddd, L', 'ddd, MMM DD, YYYY']
    }
}

I know config files are not meant to be hand edited, however, if the value of dateFormat is changed to a value outside of what's specified in enum, then an 'Uncaught Error' is thrown in console instead of clearing the config value to its default on app start:

Uncaught Error: Config schema violation: `dateFormat` should be equal to one of the allowed values
    at ElectronStore._validate (..\node_modules\conf\index.js:154)
    at ElectronStore.get store [as store] (..\node_modules\conf\index.js:441)
    at new Conf (..\node_modules\conf\index.js:119)
    at new ElectronStore (..\node_modules\electron-store\index.js:23)
    at test.js:21

So far I have only had this issue when using the enum validation on a string type.