1  'use strict';
 2  
 3  var bind       = Function.prototype.bind
 4    , isCallable = require('./is-callable')
 5    , forEach    = require('./for-each')
 6    , value      = require('./valid-value');
 7  
 8  module.exports = function (obj, scope, source) {
 9  	value(obj);
10  	scope = scope || obj;
11  	source = source || obj;
12  	forEach(source, function (value, key) {
13  		if (isCallable(value)) {
14  			obj[key] = bind.call(value, scope);
15  		}
16  	}, obj);
17  	return obj;
18  };