diff --git a/client/dom/events/event-store.js b/client/dom/events/event-store.js
deleted file mode 100644
index ae9ad90a..00000000
--- a/client/dom/events/event-store.js
+++ /dev/null
@@ -1,17 +0,0 @@
-'use strict';
-
-let list = [];
-
-module.exports.add = (el, name, fn) => {
-    list.push([
-        el,
-        name,
-        fn,
-    ]);
-};
-
-module.exports.clear = () => {
-    list = [];
-};
-
-module.exports.get = () => list;
diff --git a/client/dom/events/event-store.mjs b/client/dom/events/event-store.mjs
new file mode 100644
index 00000000..1cbfe7a4
--- /dev/null
+++ b/client/dom/events/event-store.mjs
@@ -0,0 +1,15 @@
+let list = [];
+
+export const add = (el, name, fn) => {
+    list.push([
+        el,
+        name,
+        fn,
+    ]);
+};
+
+export const clear = () => {
+    list = [];
+};
+
+export const get = () => list;
diff --git a/client/dom/events/event-store.spec.js b/client/dom/events/event-store.spec.mjs
similarity index 86%
rename from client/dom/events/event-store.spec.js
rename to client/dom/events/event-store.spec.mjs
index 7907a52c..c543fa3b 100644
--- a/client/dom/events/event-store.spec.js
+++ b/client/dom/events/event-store.spec.mjs
@@ -1,7 +1,5 @@
-'use strict';
-
-const {test} = require('supertape');
-const eventStore = require('./event-store');
+import {test} from 'supertape';
+import * as eventStore from './event-store.mjs';
 
 test('event-store: get', (t) => {
     const el = {};
diff --git a/client/dom/events/index.mjs b/client/dom/events/index.mjs
index 0762d560..2c3bfb76 100644
--- a/client/dom/events/index.mjs
+++ b/client/dom/events/index.mjs
@@ -1,5 +1,5 @@
 import itype from 'itype';
-import EventStore from './event-store.js';
+import * as EventStore from './event-store.mjs';
 
 /**
  * safe add event listener