[New] export DATA_KEY and DATA_ID constants

Author: marconi1992

README.md

@@ -377,6 +377,17 @@ function fromScript(attrs: Attributes): DeserializedData {}
 The inverse of `toScript`, this function runs on the browser and attempts to find and `JSON.parse` the contents of the server generated script.
 `attrs` is an object where the key will be a `data-key` to be placed on the element, and the value is the data attribute's value.
 
+The `serialize` function uses the attributes `DATA_KEY` and `DATA_ID` to generate the data markup. They can be used in the `fromScript` function to get the serialized data.
+
+```typescript
+import { DATA_KEY, DATA_ID } from 'hypernova'
+
+fromScript({
+    [DATA_KEY]: key,
+    [DATA_ID]: id,
+ });
+```
+
 ### Server
 
 #### [createGetComponent](src/createGetComponent.js)

src/index.js

@@ -92,3 +92,5 @@ hypernova.toScript = toScript;
 hypernova.fromScript = fromScript;
 hypernova.serialize = serialize;
 hypernova.load = load;
+hypernova.DATA_KEY = DATA_KEY;
+hypernova.DATA_ID = DATA_ID;

test/index-test.js

@@ -0,0 +1,12 @@
+import { assert } from 'chai';
+import { DATA_KEY, DATA_ID } from '../lib';
+
+describe('hypernova', () => {
+  it('DATA_KEY constant should be importable', () => {
+    assert.equal(DATA_KEY, 'hypernova-key');
+  });
+
+  it('DATA_ID constant should be importable', () => {
+    assert.equal(DATA_ID, 'hypernova-id');
+  });
+});