Node.js 如何在RavenDB中执行JS索引

我想使用一个索引，然后看到了这个:

class Products_ByCategoryName_JS extends AbstractJavaScriptIndexCreationTask {
    constructor () {
        super();

        const { load } = this.mapUtils();

        this.map("Products", product => {
            return {
                // Call method 'load' to load the related Category document
                // The document ID to load is specified by 'product.Category'
                // The Name field from the related Category document will be indexed                
                categoryName: load(product.Category, "Categories").Name

                // Since NoTracking was Not specified,
                // then any change to either Products or Categories will trigger reindexing
            };
        });
    }
}

这就是我执行查询的方式

const matchingProducts = await session
    .query({indexName: "Products/ByCategoryName"})
    .whereEquals("CategoryName", "Beverages")
    .all();

它来自文档，好的，但是我如何执行Products_ByCategoryName_JS上面的索引类，

那么它在哪里执行，或者我可以在我的代码中的哪里包含它呢？

EURO:收到此错误:

InvalidArgumentException: Map is required to generate an index, you cannot create an index without a valid Map property (in index Users/ByName)

索引:

// @ts-nocheck
import { AbstractJavaScriptIndexCreationTask } from "ravendb";

export class Users_ByName extends AbstractJavaScriptIndexCreationTask<{name: string}[]> {
  constructor () {
      super();

      this.map = `
        from users in docs.UsersData
        select new {
            Name = users.name
        }`;
  }
}

帖子主题:回复:

app.get('/', async (req, res) => {
  try {
    await new Users_ByName().execute(store);
    let session = store.openSession();
    const queryOnIndex = session.query({indexName: 'UsersData/ByName'}).whereEquals('name', 'Johnse');

    const d = await queryOnIndex.all();
    res.json('s');
  } catch(e) {
    console.log(e);
    res.send(e);
  }
});

我做错了什么？ 我的集合名称是UsersData，我的字段名称是我想要索引的名称