diff --git a/.eslintrc.js b/.eslintrc.js
index bd522ab..8b299a8 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -14,7 +14,7 @@ module.exports = {
     SharedArrayBuffer: 'readonly',
   },
   parserOptions: {
-    ecmaVersion: 2019,
+    ecmaVersion: 2020,
   },
   rules: {},
 }
diff --git a/index.js b/index.js
index 08bd543..313b41c 100644
--- a/index.js
+++ b/index.js
@@ -118,11 +118,11 @@ exports.init = function (ssb, config) {
   }
 
   function _pause() {
-    drainGraphStream.abort()
+    drainGraphStream?.abort()
     drainGraphStream = null
-    drainHopStream.abort()
+    drainHopStream?.abort()
     drainHopStream = null
-    groupMemberStream.abort()
+    groupMemberStream?.abort()
     groupMemberStream = null
   }