JavaScript Rules

Matthias Reuter from United Coders proposed a JavaScript Challenge: A Lotto Number Generator which the rules follow:

Write a JavaScript function that generates random lotto numbers. This function has to return an array of six different numbers from 1 to 49 (including both) in ascending order. You may use features of ECMA-262 only, that means no Array.contains and stuff. You must not induce global variables.

The function has to look like this

var getRandomLottoNumbers = function () {
    // your implementation here
};

Minify your function using JSMin (level aggressive) and count the bytes between the outer curly braces.

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