30 lines
993 B
Markdown
30 lines
993 B
Markdown
# servant-client-core
|
|
|
|
![servant](https://raw.githubusercontent.com/haskell-servant/servant/master/servant.png)
|
|
|
|
HTTP-client-agnostic client functions for servant APIs.
|
|
|
|
This library should mainly be of interest to backend- and combinator-writers.
|
|
|
|
## For backend-writers
|
|
|
|
If you are creating a new backend, you'll need to:
|
|
|
|
1. Define a `RunClient` instance for your datatype (call it `MyMonad`)
|
|
2. Define a `ClientLike` instance. This will look like:
|
|
|
|
``` haskell
|
|
instance ClientLike (MyMonad a) (MyMonad a) where
|
|
mkClient = id
|
|
```
|
|
|
|
3. Re-export the module Servant.Client.Core.Reexport so that your end-users
|
|
can be blissfully unaware of 'servant-client-core', and so each
|
|
backend-package comes closer to the warm hearth of the drop-in-replacement
|
|
equivalence class.
|
|
|
|
## For combinator-writers
|
|
|
|
You'll need to define a new `HasClient` instance for your combinator. There are
|
|
plenty of examples to guide you in the
|
|
[HasClient](src/Servant/Client/Core/Internal/HasClient.hs) module.
|