You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.3 KiB
51 lines
1.3 KiB
'use strict';
|
|
|
|
var forEach = require('es5-ext/object/for-each')
|
|
, validValue = require('es5-ext/object/valid-object')
|
|
|
|
, push = Array.prototype.apply, defineProperty = Object.defineProperty
|
|
, create = Object.create, hasOwnProperty = Object.prototype.hasOwnProperty
|
|
, d = { configurable: true, enumerable: false, writable: true };
|
|
|
|
module.exports = function (e1, e2) {
|
|
var data;
|
|
(validValue(e1) && validValue(e2));
|
|
if (!hasOwnProperty.call(e1, '__ee__')) {
|
|
if (!hasOwnProperty.call(e2, '__ee__')) {
|
|
d.value = create(null);
|
|
defineProperty(e1, '__ee__', d);
|
|
defineProperty(e2, '__ee__', d);
|
|
d.value = null;
|
|
return;
|
|
}
|
|
d.value = e2.__ee__;
|
|
defineProperty(e1, '__ee__', d);
|
|
d.value = null;
|
|
return;
|
|
}
|
|
data = d.value = e1.__ee__;
|
|
if (!hasOwnProperty.call(e2, '__ee__')) {
|
|
defineProperty(e2, '__ee__', d);
|
|
d.value = null;
|
|
return;
|
|
}
|
|
if (data === e2.__ee__) return;
|
|
forEach(e2.__ee__, function (listener, name) {
|
|
if (!data[name]) {
|
|
data[name] = listener;
|
|
return;
|
|
}
|
|
if (typeof data[name] === 'object') {
|
|
if (typeof listener === 'object') push.apply(data[name], listener);
|
|
else data[name].push(listener);
|
|
} else if (typeof listener === 'object') {
|
|
listener.unshift(data[name]);
|
|
data[name] = listener;
|
|
} else {
|
|
data[name] = [data[name], listener];
|
|
}
|
|
});
|
|
defineProperty(e2, '__ee__', d);
|
|
d.value = null;
|
|
};
|