Module to generate JWT

modules/createJWT.js

@@ -0,0 +1,26 @@
+const jwt = require('jsonwebtoken')
+
+/**
+ *
+ * @param {Object} credentials Apple Music credentials. Consists of a key containing MusicKit privileges, the team ID of developer account and the ID of the key
+ * @param {string} credentials.key A valid key generated from developer console that has MusicKit permissions
+ * @param {string} credentials.keyId ID of the credentials.key
+ * @param {string} credentials.teamId ID of the team that credentials.key belongs to
+ */
+ const createJWT = (credentials) => {
+	if (!credentials || !credentials.key || !credentials.teamId || !credentials.keyId) {
+		throw new Error("No credentials supplied")
+	}
+
+	return jwt.sign({}, credentials.key, {
+		algorithm: 'ES256',
+		expiresIn: '180d',
+		issuer: credentials.teamId,
+		header: {
+			alg: 'ES256',
+			kid: credentials.keyId
+		}
+	});
+}
+
+module.exports.createJWT = createJWT

package.json

@@ -1,6 +1,6 @@
 {
   "name": "node-musickit-api",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "A wrapper for the Apple Music API written in NodeJS",
   "main": "index.js",
   "repository": {

src/index.js

@@ -1,6 +1,8 @@
 const jwt = require('jsonwebtoken')
 const axios = require('axios')
 
+const { createJWT } = require("../../modules/createJWT")
+
 const rootPath = "https://api.music.apple.com/v1"
 let token
 let auth
@@ -21,15 +23,7 @@ class MusicKit {
 			throw new Error("No credentials supplied")
 		}
 
-		token = jwt.sign({}, credentials.key, {
-			algorithm: 'ES256',
-			expiresIn: '180d',
-			issuer: credentials.teamId,
-			header: {
-				alg: 'ES256',
-				kid: credentials.keyId
-			}
-		});
+		token = createJWT(credentials)
 
 		this.updateAuth(token)
 	}

src/personalized/index.js

@@ -1,5 +1,6 @@
 const jwt = require('jsonwebtoken')
 const axios = require('axios')
+const { createJWT } = require("../../modules/createJWT")
 
 const rootPath = "https://api.music.apple.com/v1"
 let token
@@ -29,15 +30,7 @@ class MusicKit {
             throw new Error("No credentials supplied")
         }
 
-        token = jwt.sign({}, credentials.key, {
-            algorithm: 'ES256',
-            expiresIn: '180d',
-            issuer: credentials.teamId,
-            header: {
-                alg: 'ES256',
-                kid: credentials.keyId
-            }
-        });
+        token = createJWT(credentials)
 
         this.updateAuth(token, credentials.userToken)
     }

src/promises/index.js

@@ -1,5 +1,6 @@
 const jwt = require('jsonwebtoken')
 const axios = require('axios')
+const { createJWT } = require("../../modules/createJWT")
 
 const rootPath = "https://api.music.apple.com/v1"
 let token
@@ -18,15 +19,7 @@ class MusicKit {
             throw new Error("No credentials supplied")
         }
 
-        token = jwt.sign({}, credentials.key, {
-            algorithm: 'ES256',
-            expiresIn: '180d',
-            issuer: credentials.teamId,
-            header: {
-                alg: 'ES256',
-                kid: credentials.keyId
-            }
-        });
+        token = createJWT(credentials)
 
         this.updateAuth(token)
     }