light-ning/src/lib/getCallerFile.js

(ALPHA) framework without dependecies...

export default () => {
  try {
    let err = new Error();
    let callerfile;
    let currentfile;

    Error.prepareStackTrace = function (err, stack) { return stack; };

    currentfile = err.stack.shift().getFileName();

    while (err.stack.length) {
      callerfile = err.stack.shift().getFileName();

      if(currentfile !== callerfile) return callerfile;
    }
  } catch (err) {}

  return undefined;
}