error fixed for swal to _swal for angular 7 & above

[KavishkaRajakaruna]

Error fixed for the following error on angular

`ERROR in node_modules/SweetAlert/typings/sweetalert.d.ts:4:10 - error TS2403: Subsequent variable declarations must have the same type. Variable 'swal' must be of type 'typeof import("E:/projects/New folder/certistore/node_modules/SweetAlert/typings/sweetalert")', but here has type 'SweetAlert'.

4 const swal: SweetAlert; ~~~~

node_modules/SweetAlert/typings/sweetalert.d.ts:1:1 1 import swal, { SweetAlert } from "./core"; ~~~~~~ 'swal' was also declared here.`

[tbishnoi]

Will this be fixed anytime soon. this is pending for so long. Do anyone has a workround where we dont have to change this file.

[KavishkaRajakaruna]

Think anyone doesn't have any other option than to change the file.

[juandps]

Please merge this change