Revert jwt dep

Author: abeisgoat

packages/rules-unit-testing/package.json

@@ -24,12 +24,10 @@
     "@firebase/logger": "0.2.6",
     "@firebase/util": "1.1.0",
     "firebase": "8.6.5",
-    "jsonwebtoken": "^8.5.1",
     "request": "2.88.2"
   },
   "devDependencies": {
     "@google-cloud/firestore": "4.8.1",
-    "@types/jsonwebtoken": "^8.5.1",
     "@types/request": "2.48.5",
     "firebase-admin": "9.7.0",
     "firebase-functions": "3.13.0",

packages/rules-unit-testing/src/api/index.ts

@@ -27,7 +27,7 @@ import * as request from 'request';
 import { base64 } from '@firebase/util';
 import { setLogLevel, LogLevel } from '@firebase/logger';
 import { Component, ComponentType } from '@firebase/component';
-import * as jwt from 'jsonwebtoken';
+import { base64Encode } from '@firebase/util';
 
 const { firestore, database, storage } = firebase;
 export { firestore, database, storage };
@@ -159,19 +159,20 @@ export type FirebaseEmulatorOptions = {
 };
 
 function createUnsecuredJwt(token: TokenOptions, projectId?: string): string {
+  // Unsecured JWTs use "none" as the algorithm.
+  const header = {
+    alg: 'none',
+    kid: 'fakekid',
+    type: 'JWT'
+  };
+
   const project = projectId || 'fake-project';
   const iat = token.iat || 0;
   const uid = token.sub || token.uid || token.user_id;
   if (!uid) {
     throw new Error("Auth must contain 'sub', 'uid', or 'user_id' field!");
   }
 
-  const header = {
-    alg: 'none',
-    kid: 'fakekid',
-    type: 'JWT'
-  };
-
   const payload: FirebaseIdToken = {
     // Set all required fields to decent defaults
     iss: `https://securetoken.google.com/${project}`,
@@ -197,9 +198,12 @@ function createUnsecuredJwt(token: TokenOptions, projectId?: string): string {
 
   // Unsecured JWTs use the empty string as a signature.
   const signature = '';
-  return jwt.sign(payload, signature, { algorithm: 'none', header });
+  return [
+    base64Encode(JSON.stringify(header)),
+    base64Encode(JSON.stringify(payload)),
+    signature
+  ].join('.');
 }
-
 export function apps(): firebase.app.App[] {
   return firebase.apps;
 }