indexdb caching sometimes returns wrong values

[belst]

Hi, I noticed that sometimes I get wrong values from the cache when I query stuff back to back.
This might be because I am using #72 already.

this.item = await this.api.gw2api.items().get(this.itemId);
console.log(`Itemid: ${this.itemId}`, this.item);
const tpval = await this.api.gw2api.commerce().prices().get(this.itemId);

Sometimes if this gets called a 2nd time the log output will be of the commerce api return not the item.

I haven't looked deeper into it yet, just wanted to let you know. I believe that it is a bug in the autoBatch function.

[ShinyMeta]

was able to reproduce in test case under following conditions:

• autobatching is enabled on client, via client.autobatch()
• endpoint created from client does not call .schema()/.language()/.authenticate()/.autoBatch() any time before calling .get()/.many()
• in this case, setupAutoBatchSharedData() is only called in the constructor of AbstractEndpoint, which does not have url property set yet
• this means _cacheHash() would assign all queued requests to the same shared batch... leading to mixed endpoint results.
• proposed fix separates these batch queues by constructor name and appears to work.