Make all functions strict mode literal object?

Question

Let's say we have this script.

var apple = {
    type: "macintosh",
    color: "red",
    getInfo: function () {
        return this.color + ' ' + this.type + ' apple';
    }
    ///more functions here....
}

How can I let all these functions run in strict mode? I can put "use strict" at the top of the file but JSlint does not approve this. An alternative is to put "use strict" in every function, but is there a better option?

Answer 1

Wrap everything inside an IIFE and JSLint should approve.

(function () {
    "use strict";
    //all your code here
}());

---

Note that variables/functions previously declared in the global scope would no longer be accessible in the global scope when moved to inside this immediately-invoked function expression.

You will have to explicitly set these as properties of the global object, e.g. the window object for browser environment:

(function () {
    "use strict";
    window.someGlobalVariable = "something";
}());

@zzzzBov's solution also works nicely on both browser and back-end environments.