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node_modules/es5-ext/object/safe-traverse.js 379 Bytes
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aaac7fed   liuqimichale   add 
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  "use strict";
  
  var value   = require("./valid-value")
    , isValue = require("./is-value");
  
  module.exports = function (obj /*, …names*/) {
  	var length, current = 1;
  	value(obj);
  	length = arguments.length - 1;
  	if (!length) return obj;
  	while (current < length) {
  		obj = obj[arguments[current++]];
  		if (!isValue(obj)) return undefined;
  	}
  	return obj[arguments[current]];
  };