Hash methods

snippets/hashNode.md

@@ -0,0 +1,14 @@
+### functionName
+
+Creates a hash for a value using the [SHA-256](https://en.wikipedia.org/wiki/SHA-2) algorithm.
+
+Use `crypto` API to create a hash for the given value.
+
+```js
+const crypto = require('crypto');
+const hashNode = val => crypto.createHash('sha256').update(val).digest('hex');
+```
+
+```js
+hashNode(JSON.stringify({a :'a', b: [1,2,3,4], 'foo': {c: 'bar'}})); // '04aa106279f5977f59f9067fa9712afc4aedc6f5862a8defc34552d8c7206393'
+```