Typescript: use `instanceof` with a interface got compilation error

[rdkmaster]

TypeScript Version: 2.5.3

Code

export interface ISlicedTableData {
    origin: RawTableData;
}

if (tableData instanceof ISlicedTableData) { // <- compilation error here.

}

Expected behavior:
no compilation error, and ts checks tableData is a implementation of ISlicedTableData or not

Actual behavior:

compilation error:  'ISlicedTableData' only refers to a type, but is being used as a value here.

[Ghabriel]

Interfaces only exist at compile-time and are removed after compilation, so that code makes no sense at run-time.

[rdkmaster]

Thanks @Ghabriel

Is there any suggestion to do the type checking at runtime with an interface?

[Ghabriel]

You can try using type guards for that.

[DanielRosenwasser]

https://stackoverflow.com/questions/46703364/why-does-instanceof-in-typescript-give-me-a-the-error-foo-only-refers-to-a/46703380#46703380