fixed tests

Author: scottheng96

package.json

@@ -8,9 +8,6 @@
   "description": "Node.js SDK for integrating with FormSG",
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
-    "exports": {
-    ".": "./dist/index.js"
-  },
   "scripts": {
     "test": "NODE_OPTIONS=\"--max-old-space-size=8192\" jest",
     "test-ci": "jest --coverage",

src/crypto-v3.ts

@@ -148,16 +148,10 @@ export default class CryptoV3 extends CryptoBase {
 
     if (submissionSecretKey === null) return null
 
-    const decryptedContent = this.decryptFromSubmissionKey(
+    return this.decryptFromSubmissionKey(
       encodeBase64(submissionSecretKey),
       rest
     )
-
-    if (!decryptedContent) {
-      throw new Error('Failed to decrypt content')
-    }
-
-    return decryptedContent
   }
 
   /**