Type 'MemcacheSession' is not assignable to type 'BaseSession'.

Type 'RedisSession' is not assignable to type 'BaseSession'.

Object is possibly 'undefined'.

Type 'MySQLSession' is not assignable to type 'BaseSession'.

Object is possibly 'undefined'.

Property 'remove' is missing in type '{ get: <T>(key: string, defaultValue?: any) => Promise<T | undefined>; getAll: <T>() => Promise<T | undefined> | undefined; set: (key: string, val: any) => Promise<void> | undefined; }' but required in type 'Session'.

Property 'clear' in type 'MemcacheSession' is not assignable to the same property in base type 'BaseSession'.

Property 'clear' in type 'MySQLSession' is not assignable to the same property in base type 'BaseSession'.

Property 'clear' in type 'RedisSession' is not assignable to the same property in base type 'BaseSession'.

Process completed with exit code 2.