Javascript 找不到phonegap/cordova模块

我在plugin.xml中安装了一个插件

<js-module src="www/org.bcsphere/bc.js" name="bcjs">
    <merges target="BC" />
</js-module>

构建完成后，我可以在c:\myapp\platforms\android\assets\www\plugins\org.bcsphere.bluetooth\www\org.bcsphere\bc.js中看到包装在

cordova.define("org.bcsphere.bluetooth.bcjs", function(require, exports, module) {
...
}

我想现在我可以在我的app/js/index.js中完成

onDeviceReady: function() {

    try{
        var BC = window.BC = cordova.require("org.bcsphere.bluetooth.bcjs");
    }
    catch(err) {
        console.log(err);
    }

    app.receivedEvent('deviceready');
}

但我得到了：

[phonegap] [console.log] module org.bcsphere.bluetooth.bcjs not found

为什么找不到模块

onDeviceReady: function() {

    try{
        var BC = window.BC = cordova.require("org.bcsphere.bluetooth.bcjs");
    }
    catch(err) {
        console.log(err);
    }

    app.receivedEvent('deviceready');
}

[phonegap] [console.log] module org.bcsphere.bluetooth.bcjs not found