@cerebral/http documentation is confusing

Hello! I’m new to cerebral and documentation for @cerebral/http makes me so dejected.

According to doc, I can use it like this:

import {set} from 'cerebral/operators'
import {httpGet} from '@cerebral/http/operators'
import {state, props} from 'cerebral/tags'

export default [
  httpGet(`/items/${props`itemKey`}`),
  set(state`app.currentItem`, props`result`)
]

But if I do so, I’ll get the following error:

Uncaught TypeError: Cannot read property 'get' of undefined
    at Object.httpGet [as function] (httpGet.js:17)

Which says nothing to me.

So there’re two problems:

1. Unclear error message If use http operators without adding HttpProvider
2. Gap in documentation, since there’s no even word about I should instantiate it first in controller section.

[Guria]

Thanks for reporting. It is a very important issues on my mind. We must check docs of all modules to avoid such confusion and put prerequisites at first place. Informative error messages when operators used without required providers is also must have for every package. Cc @christianalfoni @edgesoft @henri @reflog

[christianalfoni]

Housekeeping!