Use globalFetch.

Author: RubenVerborgh

src/solid-auth-client.js

@@ -76,7 +76,7 @@ export default class SolidAuthClient extends EventEmitter {
     const session = await getSession(storage)
     if (session) {
       try {
-        await WebIdOidc.logout(storage)
+        await WebIdOidc.logout(storage, globalFetch)
         this.emit('logout')
         this.emit('session', null)
       } catch (err) {

src/webid-oidc.js

@@ -1,5 +1,5 @@
 // @flow
-/* global RequestInfo, Response, fetch */
+/* global RequestInfo, Response */
 import * as authorization from 'auth-header'
 import RelyingParty from '@solid/oidc-rp'
 import PoPToken from '@solid/oidc-rp/lib/PoPToken'
@@ -55,7 +55,10 @@ export async function currentSession(
   }
 }
 
-export async function logout(storage: AsyncStorage): Promise<void> {
+export async function logout(
+  storage: AsyncStorage,
+  fetch: Function
+): Promise<void> {
   const rp = await getStoredRp(storage)
   if (rp) {
     try {