Not passing `fetch` directly to `requests.map` Chrome Canary was giving the following error: ``` TypeError: Failed to execute 'fetch' on 'ServiceWorkerGlobalScope': parameter 2 ('init') is not an object. ```
Not passing `fetch` directly to `requests.map`
Chrome Canary was giving the following error:
```
TypeError: Failed to execute 'fetch' on 'ServiceWorkerGlobalScope': parameter 2 ('init') is not an object.
```

`Array.prototype.map` will pass index as second parameter, fetch expects `init` object.

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