sdk-javascript/README.md

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# sdk-javascript
Javascript SDK for CloudEvents
# Repository Structure
```text
├── index.js
├── lib
│   ├── cloudevent.js
│   ├── jsonformatter.js
│   ├── format
│   │   └── json_0_1.js
│   └── specs
│   ├── spec_0_1.js
│   └── spec_0_2.js
├── LICENSE
├── package.json
├── README.md
└── test
├── cloudevent_spec_0_1.js
└── cloudevent_spec_0_2.js
```
* `index.js`: library exports
* `lib/cloudevent.js`: implementation of Cloudevent, an interface
* `lib/format/`: every format implementation goes here
* `lib/format/json_0_1.js`: implementation for JSON formatting [version 0.1](https://github.com/cloudevents/spec/blob/v0.1/json-format.md)
* `lib/specs/`: every spec implementation goes here
* `lib/specs/spec_0_1.js`: implementation for spec [version 0.1](https://github.com/cloudevents/spec/blob/v0.1/spec.md)
* `lib/specs/spec_0_2.js`: implementation for spec [version 0.2](https://github.com/cloudevents/spec/blob/master/spec.md)
* `test/cloudevent_spec_0_1.js`: unit testing for spec 0.1
* `test/cloudevent_spec_0_2.js`: unit testing for spec 0.2
# How to use
```js
/*
* Constructs a default instance with:
* - Spec 0.1
* - JSON Format 0.1
*/
var cloudevent01 = new Cloudevent();
/*
* Implemented using [Builder Design Pattern](https://en.wikipedia.org/wiki/Builder_pattern)
*/
cloudevent01
.type("com.github.pull.create")
.source("urn:event:from:myapi/resourse/123");
/*
* Backward compatibility by injecting methods from spec implementation to `Cloudevent`
* See how [here](lib/specs/spec_0_1.js#L17)
*/
cloudevent01
.eventTypeVersion("1.0");
/*
* Constructs an instance with:
* - Spec 0.2
* - JSON Format 0.1
*/
var cloudevent02 = new Cloudevent(Cloudevent.specs['0.2']);
/*
* Different specs, but the same API.
*/
cloudevent02
.type("com.github.pull.create")
.source("urn:event:from:myapi/resourse/123");
```