/home/infinitibizsol/.trash/node_modules.11/mongoose/lib/helpers/ Current File: /home/infinitibizsol/.trash/node_modules.11/mongoose/lib/helpers/once.js

'use strict';

module.exports = function once(fn) {
  let called = false;
  return function() {
    if (called) {
      return;
    }
    called = true;
    return fn.apply(null, arguments);
  };
};