Checking the return data type through modals

Is it possible to specify the type for the returned data in this line modal.onDidDismiss(data =>? It doesn't seem to be working. I want to ensure compile-time type checking for the returned data. Any suggestions?

An error is being thrown:

[ts] Expected 1 arguments, but got 2.(parameter) Transaction: any

When I attempted to do this:

 modal.onDidDismiss(data:Transaction => {
      this.transactions.push(data);
    });

Original code snippet:

goToTransaction() {
    const modal = this.modalCtrl.create('TransactionPage');
    modal.onDidDismiss(data => {
        this.transactions.push(data);
    });
    modal.present();
  }

Answer №1

To clarify which parameter and type you are referencing, simply use parentheses or a grouping operator in your code when necessary.

 modal.onDidDismiss((data:Transaction) => {
      this.transactions.push(data);
});

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