Plugins 有没有办法知道当前加载了哪些PockDB插件？

标题几乎说明了一切

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有没有办法获得已加载的PockDB插件列表？否则，有没有办法检查是否加载了特定插件？

PockDB只是将插件添加到其原型中，因此如果您不介意看到一些内置插件：

> location.href
"http://nolanlawson.github.io/pouchdb-find/"

> Object.getOwnPropertyNames(PouchDB.prototype)
Array[11]
0: "constructor"
1: "query"
2: "viewCleanup"
3: "replicate"
4: "sync"
5: "upsert"
6: "putIfNotExists"
7: "createIndex"
8: "find"
9: "getIndexes"
10: "deleteIndex"
length: 11
__proto__: Array[0]


> "find" in Object.getOwnPropertyNames(PouchDB.prototype)
true