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'use strict';
/**
* Module wrapper of @substack's `caller.js`
* @original: https://github.com/substack/node-resolve/blob/master/lib/caller.js
* @blessings: https://twitter.com/eriktoth/statuses/413719312273125377
* @see https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi
*/
module.exports = function () {
var pst, stack, file, frame;
pst = Error.prepareStackTrace;
Error.prepareStackTrace = function (_, stack) {
Error.prepareStackTrace = pst;
return stack;
};
stack = (new Error()).stack;
stack = stack.slice(2);
do {
frame = stack.shift();
file = frame && frame.getFileName()
} while (stack.length && file === 'module.js');
return file;
};