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'use strict';
var copy = require('es5-ext/object/copy')
, map = require('es5-ext/object/map')
, callable = require('es5-ext/object/valid-callable')
, validValue = require('es5-ext/object/valid-value')
, bind = Function.prototype.bind, defineProperty = Object.defineProperty
, hasOwnProperty = Object.prototype.hasOwnProperty
, define;
define = function (name, desc, bindTo) {
var value = validValue(desc) && callable(desc.value), dgs;
dgs = copy(desc);
delete dgs.writable;
delete dgs.value;
dgs.get = function () {
if (hasOwnProperty.call(this, name)) return value;
desc.value = bind.call(value, (bindTo == null) ? this : this[bindTo]);
defineProperty(this, name, desc);
return this[name];
};
return dgs;
};
module.exports = function (props/*, bindTo*/) {
var bindTo = arguments[1];
return map(props, function (desc, name) {
return define(name, desc, bindTo);
});
};
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