Question

This is the input:

function local2functionA()
{
    local2functionB('hello');
}

function local2functionB(text)
{
    alert(text);
}

This is the output:

function local2functionA(){local2functionB("hello")}function local2functionB(a){alert(a)};

Any ideas where it hasn’t munged the function names?

Same outcome at http://www.shrinker.ch/

Answer 1

I think it’s because those functions are declared on the top-level, and thus visible to the “outside” so you cannot just change their name.

If you put the definition of local2functionB inside of local2functionA, it minifies nicely:

function local2functionA()
{
    function local2functionB(text)
    {
      alert(text);
    }

    local2functionB('hello');
}

// becomes 

function local2functionA(){alert("hello")};

Note that the remaining top-level function also does not get renamed (while the “private” function gets inlined away completely).