Using Sweet alert with Typescript class

Question

I have a method inside a typescript class that just looks like this

    var confirmation = confirm("Run Agent Job?");
    if (confirmation) {
        console.log('yes');
    } else {
        console.log('no');
    }

I'm trying to convert this to use Sweet Alert, so inside the method I just put this. But Typescript doesn't recognize this It throws a Cannot find name swal

swal("hello");

I have imported sweet alert as follows

<link href="~/Content/css/sweetalert.css" rel="stylesheet" />
<script src="~/Scripts/sweetalert.min.js"></script>

What am I doing wrong? If I try to use swal() in just a plain *.js file, it'll work fine. It's only when it's in a *.ts file.

Answer 1

Typescript

I got it to work with typescript the following way. In the top of your .ts file use:

import * as swal from 'sweetalert';

Then use the function like this

swal({
  title: "Are you sure?",
  text: "You will not be able to undo this action",
  type: "warning",
  showCancelButton: true,
  confirmButtonColor: "#DD6B55",
  confirmButtonText: "Yes, delete it!",
  closeOnConfirm: true
},
confirmed => {
   if(confirmed) {
       // Do what ever when the user click on the 'Yes, delete it' button
   }
});

You can find more examples in the docs.

Installation via npm and typings

I installed the sweetalert package the via npm

npm install sweetalert --save

and the typings

// the old way
typings install dt~sweetalert --save --global 

// new way
npm install --save @types/sweetalert

After this, make sure you have included the js and the css file in your index.html.

If you get the following error

swal(..) is not a function

then you have not included the js file properly.

For aurelia CLI users

You can add the following to your aurelia.json.

      {
        "name": "sweetalert",
        "path": "../node_modules/sweetalert",
        "main": "dist/sweetalert.min",
        "resources": [
          "dist/sweetalert.css"
        ]
      },

and in app.html use

<require from="sweetalert/dist/sweetalert.css"></require>