Cannot use instanceof on interfaces

[vixalien]

The following code won't work.

const obj = {};
obj instanceof Gio.File;

/*
The right-hand side of an 'instanceof' expression must be either of type 'any', a class, function, or other type assignable to the 'Function' interface type, or an object type with a 'Symbol.hasInstance' method.ts(2359)
*/