feat(examples): added NodeJS example

README.md

@@ -101,7 +101,17 @@ createCanvas: (width, height) => HTMLCanvasElement
 
 Node
 ---
-Install with: 
+
+See `examples/nodejs`:
+```shell
+$ cd examples/nodejs
+$ npm install
+$ node index
+```
+This will build both PNG and HTML files into `output` directory.
+
+
+Or, manually try with: 
 ```shell
 $ npm install hashicon canvas
 ```

examples/nodejs/index.js

@@ -0,0 +1,20 @@
+const hashicon = require('../../dist/hashicon.cjs.js')
+const fs = require('fs');
+const outputDir = __dirname + "/output";
+const hashString = "test";
+
+const { createCanvas } = require('canvas');
+const canvas = hashicon(hashString, { createCanvas });
+
+// Try canvas.toDataURL
+fs.writeFile(
+	`${outputDir}/${hashString}.html`,
+	`<img src="${canvas.toDataURL()}" />`,
+	err => console.log(`HTML file ${err ? 'got error: ' + err : 'created'}`)
+);
+
+// Try canvas.createPNGStream
+const out = fs.createWriteStream(`${outputDir}/${hashString}.png`);
+const stream = canvas.createPNGStream();
+stream.pipe(out);
+out.on('finish', () =>  console.log('PNG file created'));

examples/nodejs/output/.gitignore

@@ -0,0 +1,2 @@
+*.html
+*.png