IDEA shows warning "unused function declaration" for inline functions. This bug was marked resolved (IDEA-42099), but I still see the problem. I've included a more complete example with comments as well as a screen shot. This is inside a javascript file (bug.js)

function aaa(){

/ nested functions works as expected /
bbb();
function bbb(){}
ccc();
function ccc(){}

/ nested functions do NOT work as expected /
ddd();
eee();
function ddd(){} /// function ddd() appears unused because the function call eee() is between this function and it's caller
function eee(){} ///

/ nested functions do NOT work as expected /
fff();
ggg()
hhh();
iii(); // only the closest function call iii will show its function as used
function fff(){}
function ggg(){}
function hhh(){}
function iii(){} // only the closest function call iii will show its function as used


/ nested functions do NOT work as expected /
jjj();
kkk();
function jjj(){} // this function is shown as used only because a call to it appears below
function kkk(){}
kkk(); // after the fact function calls in between do not appear to be a factor
jjj(); // this causes function jjj() to appear as used
}

/ non-nested functions does NOT behave as expected /
function lll(){} // not used and not reported as such

/ non-nested functions behave as expected /
mmm();
nnn();
function mmm(){}
function nnn(){}

Environment: windows xp

Issue was resolved