feat(Validation): add small validation options for checkboxes and rad…

…io options

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ushahidi-platform-sdk",
-  "version": "v0.3.0",
+  "version": "v0.3.1",
   "description": "An SDK for the Ushahidi Platform - V3+ compatible",
   "engines": {
     "node": ">= 10 <13"

src/surveys.ts

@@ -10,6 +10,16 @@ export class Surveys {
     this.backendUrl = backendUrl;
     this.setToken(token, expires);
   }
+  static validateUniqueOptions(options: []) {
+
+    // converting to Set would remove duplicates,so if size matches original we are good
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
+    return new Set(options).size === options.length;
+  }
+  static validateNonEmptyOptions(options: []) {
+    // check against duplicate or empty options
+    return options.filter(i => i === '' || i === null).length > 0;
+  }
 
   setToken(token?: string, expires?: number): object {
     this.token = null;