merge与set的区别

gistfile1.txt

fis.config.set('settings.postpackager.autoload', {
    a : 1
});

fis.config.set('settings.postpackager.autoload', {
    b : 1
});
//settings.postpackager.autoload = {b:1}


fis.config.set('settings.postpackager.autoload', {
    a : 1
});

fis.config.merge({
    settings : {
        postpackager : {
            autoload : {
                b : 1
            }
        }
    }
});
//settings.postpackager.autoload = {a:1, b:1}