mirror of
https://github.com/cloudflare/wrangler-action.git
synced 2024-11-26 03:44:44 +01:00
49 lines
2.5 KiB
Markdown
49 lines
2.5 KiB
Markdown
[](https://travis-ci.org/#!/adaltas/node-stream-transform) [](https://www.npmjs.com/package/stream-transform) [](https://www.npmjs.com/package/stream-transform)
|
|
|
|
Part of the [CSV module](https://csv.js.org/), this project is a simple object transformation framework. It implements the Node.js [`stream.Transform` API](http://nodejs.org/api/stream.html#stream_class_stream_transform). It also provides a simple callback-based API for convenience. It is both extremely easy to use and powerful.
|
|
|
|
## Documentation
|
|
|
|
* [Project homepage](http://csv.js.org/transform/)
|
|
* [API](http://csv.js.org/transform/api/)
|
|
* [Options](http://csv.js.org/transform/options/)
|
|
* [Handler](http://csv.js.org/transform/handler/)
|
|
* [State properties](http://csv.js.org/transform/state/)
|
|
* [Examples](http://csv.js.org/transform/examples/)
|
|
|
|
## Features
|
|
|
|
* Extends the native Node.js [transform stream API](http://nodejs.org/api/stream.html#stream_class_stream_transform)
|
|
* Simplicity with the optional callback and sync API
|
|
* Pipe transformations between readable and writable streams
|
|
* Synchronous versus asynchronous user functions
|
|
* Sequential and parallel execution
|
|
* Accept object, array or JSON as input and output
|
|
* Sequential or user-defined concurrent execution
|
|
* Skip and multiply records
|
|
* Alter or clone input records
|
|
* MIT License
|
|
|
|
## Usage
|
|
|
|
The module is built on the Node.js Stream API. For the sake of simplify, a simple callback API is also provided. To give you a quick look, here's an example of the callback API:
|
|
|
|
```javascript
|
|
var transform = require('stream-transform');
|
|
|
|
input = [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ];
|
|
transform(input, function(data){
|
|
data.push(data.shift());
|
|
return data.join(',')+'\n';
|
|
}, function(err, output){
|
|
output.should.eql([ '2,3,4,1\n', 'b,c,d,a\n' ]);
|
|
});
|
|
```
|
|
|
|
## Development
|
|
|
|
Tests are executed with mocha. To install it, simple run `npm install` followed by `npm test`. It will install mocha and its dependencies in your project "node_modules" directory and run the test suite. The tests run against the CoffeeScript source files.
|
|
|
|
To generate the JavaScript files, run `npm run coffee`.
|
|
|
|
The test suite is run online with [Travis](http://travis-ci.org/wdavidw/node-stream-transform). See the [Travis definition file](https://github.com/adaltas/node-stream-transform/blob/master/.travis.yml) to view the tested Node.js version.
|