Function parameter to use interface's function signature

Question

I have a function signature in an interface which I'd like to use as the signature for a callback parameter in some class.

export interface IGrid {
    gridFormat(gridCell: GridCell, grid: Grid): boolean
}

I'd like to do something like this:

validateFormat(validator: IGrid.gridFormat) {
    // ...
}

Is this possible?

Answer 1

Is this possible?

Yes as shown below:

export interface IGrid {
    gridFormat(gridCell: GridCell, grid: Grid): boolean
}

function validateFormat(validator: IGrid['gridFormat']) { // MAGIC 🌹
    // ...
}