Getting typescript to work for Angular 2 project with facebook login

I am trying to get up and ruing with Angular 2 and typescript. So far so good, but I am having some troubles to get a Facebook login message working. I found a project on github that demonstrated how this can be done. In this example, they have the following coector:

fbcoector.ts

export class FBCoector {

    constructor(appID: string) {
        if (!window.fbAsyncInit) {
            console.log('define');
            window.fbAsyncInit = function() {
                FB.init({
                    appId: appID,
                    xfbml: true,
                    version: 'v2.5'
                });
            };
        }
    }

    initFB() {
        var js: any,
            id = 'facebook-jssdk',
            ref = document.getElementsByTagName('script')[0];

        if (document.getElementById(id)) {
            retu;
        }

        js = document.createElement('script');
        js.id = id;
        js.async = true;
        js.src = "//coect.facebook.net/en_US/sdk.js";

        ref.parentNode.insertBefore(js, ref);
    }

}

This gives the following 2 errors when I am compiling my typescript:

error TS2339: Property fbAsyncInit does not exist on type 'Window'.
error TS2304: Caot find name 'FB'.

This makes sense when you think about it, typescript needs these variables defined. I guess this is partly because I am new to typescript, but I don't exactly know how this should be done. Should I make a custom typings file? Or should I use workarounds? (For example adding in front of window?)

Thanks in advance!