print stack trace anywhere

stack-trace-without-exception.js

function foo(args) {
  var i, j, k;
  // ...
  // j acquires some interesting value
  // Who called foo when j took this interesting value?
  //

  var e = new Error('dummy');
  var stack = e.stack.replace(/^[^\(]+?[\n$]/gm, '')
      .replace(/^\s+at\s+/gm, '')
      .replace(/^Object.<anonymous>\s*\(/gm, '{anonymous}()@')
      .split('\n');
  console.log(stack);

  // ...
  // rest of the code
}