erlv8 doesn't provide stacktrace when Erlang-defined functions are called

[gleber]

With require() function defined as a erlv8_fun in beamjs (which loads required file, wraps it in JS function, compiles the function and calls it) stacktrace of the error is not very useful:

[{<<"name">>,<<"Error">>},
 {<<"message">>,
  <<"Error: Error: TypeError: Cannot read property 'prototype' of undefined">>},
 {<<"stack">>,
  <<"Error: Error: Error: TypeError: Cannot read property 'prototype' of undefined
            at /home/gleber/code/opensource/app/app.js:7:14">>}]

While the stacktrace should look more or less like, since both "util.js" file and "request" package are required with require() calls:

TypeError: Cannot read property 'prototype' of undefined
    at /home/gleber/code/opensource/app/bundle/lib/node_modules/request/main.js:57:10
    at /home/gleber/code/opensource/app/util.js:10:2
    at /home/gleber/code/opensource/app/app.js:7:14

Any ideas where to look?