declare namespace Entity {
  namespace Meta {
    type Config = Record<string, Type.Names>;

    type Types = string | number | boolean;

    type InferMetaType<TypeName extends Type.Names> =
        TypeName extends "text"     ? string
      : TypeName extends "int"      ? number
      : TypeName extends "real"     ? number
      : TypeName extends "boolean"  ? boolean
      : never;

    type InferFrom<
      EMC extends Entity.Meta.Config,
      PEMC extends Entity.Meta.Config,
      ValidField,
      F extends ValidField,
    > = F extends keyof EMC ? InferMetaType<EMC[F]>
      : F extends keyof PEMC ? InferMetaType<PEMC[F]>
      : never;

    namespace Type {
      type Names = "text" | "int" | "real" | "boolean";
    }
  }
}