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Update tdd and convert node snippet to async

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Angelos Chalaris
2018-01-17 21:13:12 +02:00
parent 5c0228d3cd
commit b9c82fae1a
3 changed files with 6 additions and 5 deletions
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7
snippets/hashNode.md
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@ -1,14 +1,15 @@
### hashNode
Creates a hash for a value using the [SHA-256](https://en.wikipedia.org/wiki/SHA-2) algorithm.
Creates a hash for a value using the [SHA-256](https://en.wikipedia.org/wiki/SHA-2) algorithm. Returns a promise.
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');
const hashNode = val =>
new Promise(resolve => setTimeout(() => resolve(crypto.createHash('sha256').update(val).digest('hex')),0));
```
```js
hashNode(JSON.stringify({a :'a', b: [1,2,3,4], 'foo': {c: 'bar'}})); // '04aa106279f5977f59f9067fa9712afc4aedc6f5862a8defc34552d8c7206393'
hashBrowser(JSON.stringify({a :'a', b: [1,2,3,4], 'foo': {c: 'bar'}})).then(console.log); // '04aa106279f5977f59f9067fa9712afc4aedc6f5862a8defc34552d8c7206393'
```