TypeScript just for typings in Visual Studio 2015

Question

I want to use TypeScript just for typings. I don't want to use classes, interfaces, or even use TypeScript definitions. The reason is that I'm using some jQuery plugins that don't have TypeScript definitions and I can't write them because of time constraints.

I keep reading that I should be able to use typings without the other features because TypeScript is based on JavaScript, but I really can't find a way. Consider the code below. I'm not using the jQuery type definition, therefore I get, "Cannot find name $". And again, I don't want to use TypeScript definitions if they don't cover everything I use.

So the TS file does not get transpiled into a JS file. And the build in Visual Studio 2015 fails.

My question is - how can I have this working in Visual Studio 2015? This is my TS file:

class Dto {
    name: string;
    age: number;
}

$.ajax({
    url: "",
    method: "PUT",
    data: {}
})
.then(function (response: Dto) {
    response.age = 16;
});

typescript definition is how typescript knows about types, you can't have typed third party libraries without them. — toskv
– toskv, Commented Nov 28, 2016 at 22:47

Paleo · Accepted Answer · 2016-11-29 10:51:54Z

1

Use JQuery without typings

Before to use $, you can declare to the compiler it exists:

declare var $: any;

You can declare every global variables you use as of type any and the compiler won't complain about them.

Use the JQuery typings and a plugin without typings

With TypeScript, each interface can be completed from everywhere. After importing typings for JQuery, the missing members can be added from your own code:

interface JQuery {
  hereAMemberName: any
}
$('body').hereAMemberName // OK

And / or:

interface JQueryStatic {
  hereAMemberName: any
}
$.hereAMemberName // OK

edited Nov 29, 2016 at 10:51

answered Nov 29, 2016 at 10:21

Paleo

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