first commit

services/BarcodeService.js

@@ -0,0 +1,24 @@
+const barcode = require('barcode');
+
+module.exports = {
+  /**
+   * Generate barcode
+   * @param {string} string barcode text
+   * @param {{width?: number, height?: number}} param1 width and height for barcode image
+   * @returns {Promise.<string>}
+   */
+  generateBarcode: async function (string, { width = 400, height = 100 }) {
+    return new Promise((resolve, reject) => {
+      const code128 = barcode('Code128', {
+        data: string,
+        width,
+        height,
+      });
+
+      code128.getBase64(function (error, base64String) {
+        if (error) reject(error);
+        else resolve(base64String);
+      });
+    });
+  },
+};