TypeScript missing Dialog$EscapeHandler

[daletman]

I cannot find a Type for the Dialog escapeHandler.

Used Version: 1.120

[codeworrior]

Seems that sap.m.Dialog does not define a (named) type for the escapeHandler. The getter getEscapeHandler and the setter setEscapeHandler are only typed inline:

class Dialog {
    getEscapeHandler():
      ((p1: {
          resolve: Function;
          reject: Function;
        }) => void)
      | null;

    setEscapeHandler(
      fnEscapeHandler?: (p1: {
        resolve: Function;
        reject: Function;
      }) => void
    ): this;
}

As a workaround, you might derive your own type from the signature of the Dialog's setEscapeHandler method:

import Dialog from "sap/m/Dialog";
type DialogEscapeHandler = Required<Parameters<Dialog["setEscapeHandler"]>>[0];

const myHandler: DialogEscapeHandler = ({resolve, reject}) => {};

If interested, see https://www.typescriptlang.org/docs/handbook/utility-types.html for details about the used utility types Required and Parameters.