Added JWTTokenProvider to preserve functionality

no-issue

This allows the magic-link module to be used with the current
functionality with minimal changes

ghost/magic-link/JWTTokenProvider.js

@@ -0,0 +1,50 @@
+const jwt = require('jsonwebtoken');
+
+/**
+ * @typedef {import('jsonwebtoken').Secret} Secret
+ * @typedef {string} JSONWebToken
+ */
+
+/**
+ * @typedef {Object<string, any>} Data
+ */
+
+module.exports = class JWTTokenProvider {
+    /**
+     * @param {Secret} secret
+     */
+    constructor(secret) {
+        this.secret = secret;
+    }
+
+    /**
+     * @param {Data} data
+     * @returns {Promise<JSONWebToken>}
+     */
+    async create(data) {
+        const token = jwt.sign(data, this.secret, {
+            algorithm: 'HS256',
+            expiresIn: '10m'
+        });
+
+        return token;
+    }
+
+    /**
+     * @param {JSONWebToken} token
+     * @returns {Promise<Data>}
+     */
+    async validate(token) {
+        /** @type any */
+        const claims = jwt.verify(token, this.secret, {
+            algorithms: ['HS256'],
+            maxAge: '10m'
+        });
+
+        if (!claims || typeof claims === 'string') {
+            throw new Error();
+        }
+
+        return claims;
+    }
+};

ghost/magic-link/test/index.test.js

@@ -1,6 +1,7 @@
 const should = require('should');
 const sinon = require('sinon');
 const MagicLink = require('../');
+const JWTTokenProvider = require('../JWTTokenProvider');
 const crypto = require('crypto');
 
 const sandbox = sinon.createSandbox();
@@ -14,7 +15,7 @@ describe('MagicLink', function () {
     describe('#sendMagicLink', function () {
         it('Sends an email to the user with a link generated from getSigninURL(token, type)', async function () {
             const options = {
-                secret,
+                tokenProvider: new JWTTokenProvider(secret),
                 getSigninURL: sandbox.stub().returns('FAKEURL'),
                 getText: sandbox.stub().returns('SOMETEXT'),
                 getHTML: sandbox.stub().returns('SOMEHTML'),
@@ -57,7 +58,7 @@ describe('MagicLink', function () {
     describe('#getDataFromToken', function () {
         it('Returns the user data which from the token that was encoded by #sendMagicLink', async function () {
             const options = {
-                secret,
+                tokenProvider: new JWTTokenProvider(secret),
                 getSigninURL: sandbox.stub().returns('FAKEURL'),
                 getText: sandbox.stub().returns('SOMETEXT'),
                 getHTML: sandbox.stub().returns('SOMEHTML'),