Subscription/unsubscription seems to work.

shared/interoperable-errors.js

@@ -105,13 +105,6 @@ class InvalidConfirmationForUnsubscriptionError extends InteroperableError {
     }
 }
 
-class SubscriptionNotAllowedError extends InteroperableError {
-    constructor(msg, data) {
-        super('SubscriptionNotAllowedError', msg, data);
-        this.status = 403;
-    }
-}
-
 const errorTypes = {
     InteroperableError,
     NotLoggedInError,
@@ -129,8 +122,7 @@ const errorTypes = {
     PermissionDeniedError,
     InvalidConfirmationForSubscriptionError,
     InvalidConfirmationForAddressChangeError,
-    InvalidConfirmationForUnsubscriptionError,
-    SubscriptionNotAllowedError
+    InvalidConfirmationForUnsubscriptionError
 };
 
 function deserialize(errorObj) {

shared/package-lock.json

@@ -0,0 +1,24 @@
+{
+  "name": "mailtrain-shared",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "moment": {
+      "version": "2.20.1",
+      "resolved": "https://registry.npmjs.org/moment/-/moment-2.20.1.tgz",
+      "integrity": "sha512-Yh9y73JRljxW5QxN08Fner68eFLxM5ynNOAw2LbIB1YAGeQzZT8QFSUvkAz609Zf+IHhhaUxqZK8dG3W/+HEvg=="
+    },
+    "moment-timezone": {
+      "version": "0.5.14",
+      "resolved": "https://registry.npmjs.org/moment-timezone/-/moment-timezone-0.5.14.tgz",
+      "integrity": "sha1-TrOP+VOLgBCLpGekWPPtQmjM/LE=",
+      "requires": {
+        "moment": "2.20.1"
+      }
+    },
+    "owasp-password-strength-test": {
+      "version": "github:bures/owasp-password-strength-test#50bfcf0035b1468b9d03a00eaf561d4fed4973eb"
+    }
+  }
+}

shared/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "mailtrain-shared",
+  "version": "1.0.0",
+  "description": "Self hosted email newsletter app - shared lib",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/Mailtrain-org/mailtrain.git"
+  },
+  "author": "",
+  "license": "GPL-3.0",
+  "homepage": "https://mailtrain.org/",
+  "engines": {
+    "node": ">=5.0.0"
+  },
+  "dependencies": {
+    "moment": "^2.18.1",
+    "moment-timezone": "^0.5.13",
+    "owasp-password-strength-test": "github:bures/owasp-password-strength-test"
+  }
+}