The error message "The function XXX.isSupported is not defined" is displayed

Integrating a JavaScript library into Typescript

When I use this function in JavaScript, it works perfectly:

_clickHandler() {
TouchID.isSupported()
  .then(authenticate)
  .catch(error => {
    AlertIOS.alert('TouchID not supported');
  });

}

However, when attempting to use it in Typescript:

import * as TouchID from 'react-native-touch-id';

function FingerPrintCheck() {
  console.log('altered');
  TouchID.isSupported()
  .then(authenticate)
  .catch((error : any) => {
    AlertIOS.alert('TouchID not supported');
  });
}

An error is encountered:

The issue reported is: "TouchID.isSupported is not a function"

So, why is Typescript failing to recognize the function? Do I need to instantiate a parameter or perform some other action?

Edit: If I import as suggested:

import TouchID from "react-native-touch-id";

I will receive the following error message:

[ts] Module ''react-native-touch-id'' has no default export

Answer №1

Use the TouchID library by importing it like this:

import TouchID from "react-native-touch-id";

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