### Compilation failed:

error: 1: name '$function' is reserved
void $function() {}
     ^^^^^^^^^
error: 4: name '$one' is reserved
    const half $one = 1;
               ^^^^
error: 5: name '$function' is reserved
    $function();
    ^^^^^^^^^
error: 6: name '$hsl_to_rgb' is reserved
    return $hsl_to_rgb(half3(0), $one);
           ^^^^^^^^^^^
error: 6: name '$one' is reserved
    return $hsl_to_rgb(half3(0), $one);
                                 ^^^^
5 errors