solid-code/examples/myDefine/caller.js

JavaScript code quality front-end

// getting caller code from
// http://stackoverflow.com/questions/13227489/how-can-one-get-the-file-path-of-the-caller-function-in-node-js
function getCaller() {
  var stack = getStack()

  // Remove superfluous function calls on stack
  stack.shift()
  stack.shift()

  // Return caller's caller
  return stack[1].receiver.id;
}
module.exports.caller = getCaller;

function getStack() {
  // Save original Error.prepareStackTrace
  var origPrepareStackTrace = Error.prepareStackTrace

  // Override with function that just returns `stack`
  Error.prepareStackTrace = function (_, stack) {
    return stack
  }

  // Create a new `Error`, which automatically gets `stack`
  var err = new Error()

  // Evaluate `err.stack`, which calls our new `Error.prepareStackTrace`
  var stack = err.stack

  // Restore original `Error.prepareStackTrace`
  Error.prepareStackTrace = origPrepareStackTrace

  // Remove superfluous function call on stack
  stack.shift() // getStack --> Error

  return stack
}