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https://github.com/gucheen/fetchql
GraphQL client with Fetch
https://github.com/gucheen/fetchql
fetch graphql javascript
Last synced: 19 days ago
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GraphQL client with Fetch
- Host: GitHub
- URL: https://github.com/gucheen/fetchql
- Owner: gucheen
- License: mit
- Created: 2016-05-20T02:09:17.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2023-03-02T06:38:42.000Z (almost 2 years ago)
- Last Synced: 2024-11-28T20:14:05.999Z (27 days ago)
- Topics: fetch, graphql, javascript
- Language: JavaScript
- Homepage: https://gucheen.github.io/fetchql/
- Size: 1.33 MB
- Stars: 180
- Watchers: 5
- Forks: 12
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
README
[](https://www.npmjs.com/package/fetchql)
[](https://travis-ci.org/gucheen/fetchql)
[](https://coveralls.io/github/gucheen/fetchql?branch=master)
FetchQL is a query client for GraphQL server works on both browser and Node(need fetch support, eg. node-fetch)
## New in v3.0.0
New TypeScript declaration file(.tsd). #9
## Upgrade to 2.2.0
Now FetchQL distributes an ES module(`./lib/fetchql.es.js`) by default and you can simply import FetchQL by `import fetchql from 'fetchql'`.
For details, please refer to [PR: Added support for ES modules by default](https://github.com/gucheen/FetchQL/pull/6#issue-277709034).
## Breaking Changes(since v2.0.0)
- Source code has been moved into `./src` and distributed file goes to `./lib`;
- Distributed file(`./lib/fetchql.js`) is unminified now.
## Pros:
* lightweight
* wrap query methods
* easily set server-side
* get enum types by names (with cache)
* built-in interceptors
* request state callbacks
* written in ES2015 and modules
## Usage
`FetchQL` distributes both ES module and CommonJS module
Import FetchQL:
- `import FetchQL from 'fetchql'`
- `const FetchQL = require('fetchql')`
ES module support is determined by your bundler tool(webpack, rollup, etc.).
## Documentation
* **Class FetchQL**
`var Query = new FetchQL({ url, interceptors, headers, onStart, onEnd, omitEmptyVariables })`
```javascript
{
url: '', // GraphQL server address
interceptors: [],
headers: {}, // customized headers of all requests,
onStart: function (requestQueueLength) {}, // callback of a new request queue
onEnd: function (requestQueueLength) {} // callback of a request queue finished
omitEmptyVariables: false, // remove null props(null or '') from the variables
}
```
* **interceptor**
`interceptors` is an optional parameter of the class. It can be an Array or an Object.
```javascript
{
url: '',
interceptors: [interceptor]
// or
// interceptors: interceptor
}
// interceptor
{
request: function (url, config) {
// Modify the url or config here
return [url, config];
},
requestError: function (error) {
// Called when an error occured during another 'request' interceptor call
return Promise.reject(error);
},
response: function (response) {
// Modify the reponse object
return response;
},
responseError: function (error) {
// Handle an fetch error
return Promise.reject(error);
}
}
```
- FetchQL.addInterceptors(interceptor[]|interceptor) => function
Add more interceptors. Arguments are same with `interceptors` of class.
It will return a function to remove **added interceptors**.
- FetchQL.clearInterceptors() => void
Remove all interceptors.
* **FetchQL.query()**
`Query.query({operationName: '', query: '', variables: {}, opts: {}})` => Promise
Method for query data from the server. `operationName` **must** be provided.
`query` and `variables` are followed the specification fo GraphQL.
If `Data` was missing or `null`, or if all fields of data was null, will **reject** the promise.
* opts - additional options(will not be passed to server)
- opts.omitEmptyVariables - similar to omitEmptyVariables global settings, remove null props(null or '') from the variables
* **FetchQL.getEnumTypes()**
`Query.getEnumTypes(['array', 'of', 'enum', 'name'])` => Promise
Will get enums' information from the server. Then you can get the following Object in the promise:
```js
{
array: {
name: '',
kind: '',
description: '',
enumValues: {
name: '',
description: '',
}
},
of: {...},
enum: {...},
name: {...}
}
```
This method currently supports caching. All enum will be cached after first querying.
* **FetchQL.getUrl()**
Return current server address.
* **FetchQL.setUrl()**
`Query.setUrl('')`
Set a new server address.
* **callback - onStart(requestQueueLength), onEnd(requestQueueLength)**
When FetchQL make a new request, if it belongs to a new queue(means there are no requests before), will call `onStart()`.
By this, you can know that now there are some network requests within FetchQL.
When FetchQL finishes a request and find that there are no requests anymore, will call `onEnd()`.
By this, you can know that all requests within FetchQL have been finished.
These two callbacks are useful when you want to watch the state of FetchQL's network requesting.
For example, you may have an indicator(loading spinner, loading bar) in your web application, with this feature you can easily manage the indicator's state(display or not);
* **omitEmptyVariables** - Boolean(default to false) remove null props(null or '') from the variables in query
Sometimes `null` or `''` could be different meanings in backend logic.
And if you just want the backend to **ignore these variables**, use this option to remove them.
**Notice**: Only properties those in an object of 'variables', will be removed.
```
{ willNotRemove: '', obj: { emptyString: '', nullProp: null } } => { willNotRemove: '', obj: {} } // remove them
```
* **requestOptions** - Object change request options of fetch in FetchQL.
```
var ql = new FetchQL(
{
requestOptions: {
credentials: 'include',
},
}
);
ql.query(
{
requestOptions: {
credentials: 'same-origin',
},
}
);
```
`requestOptions` in FetchQL's `new constructor` or `query` is used to change request options of `fetch` method in FetchQL.
Set it in the new constructor will change default request options in all query in FetchQL.
Set it in query method will only change request options of the current query.
## Tips
1. [FetchQL in angularjs](https://github.com/gucheen/FetchQL/wiki/FetchQL-in-angularjs)
## .js or .mjs
* Use `index.js` in any ES2015 environment.
* Use `index.mjs` for Node (version >= 6.0) without babel, because Node doesn't support ES2015 modules natively.
## Develop
`npm install`
`./test/server.js` could be used as a development server.
## LICENSE
The MIT License (MIT)
Copyright (c) 2016 Cheng Gu
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.