Snackbar: refactor to use opts object

app/soapbox/actions/snackbar.ts

@@ -15,29 +15,31 @@ export type SnackbarAction = {
   severity: SnackbarActionSeverity,
 };
 
-export const show = (
-  severity: SnackbarActionSeverity,
-  message: SnackbarMessage,
+type SnackbarOpts = {
   actionLabel?: SnackbarMessage,
   actionLink?: string,
   action?: () => void,
+};
+
+export const show = (
+  severity: SnackbarActionSeverity,
+  message: SnackbarMessage,
+  opts?: SnackbarOpts,
 ): SnackbarAction => ({
   type: ALERT_SHOW,
   message,
-  actionLabel,
-  actionLink,
   severity,
-  action,
+  ...opts,
 });
 
 export const info = (message: SnackbarMessage, actionLabel?: SnackbarMessage, actionLink?: string) =>
-  show('info', message, actionLabel, actionLink);
+  show('info', message, { actionLabel, actionLink });
 
 export const success = (message: SnackbarMessage, actionLabel?: SnackbarMessage, actionLink?: string) =>
-  show('success', message, actionLabel, actionLink);
+  show('success', message, { actionLabel, actionLink });
 
 export const error = (message: SnackbarMessage, actionLabel?: SnackbarMessage, actionLink?: string) =>
-  show('error', message, actionLabel, actionLink);
+  show('error', message, { actionLabel, actionLink });
 
 export default {
   info,

app/soapbox/main.tsx

@@ -4,6 +4,7 @@ import './precheck';
 import * as OfflinePluginRuntime from '@lcdp/offline-plugin/runtime';
 import React from 'react';
 import ReactDOM from 'react-dom';
+import { defineMessages } from 'react-intl';
 
 import snackbar from 'soapbox/actions/snackbar';
 import * as BuildConfig from 'soapbox/build_config';
@@ -15,6 +16,11 @@ import * as monitoring from './monitoring';
 import * as perf from './performance';
 import ready from './ready';
 
+const messages = defineMessages({
+  update: { id: 'sw.update', defaultMessage: 'Update' },
+  updateText: { id: 'sw.update_text', defaultMessage: 'An update is available.' },
+});
+
 function main() {
   perf.start('main()');
 
@@ -36,8 +42,11 @@ function main() {
       // https://github.com/NekR/offline-plugin/pull/201#issuecomment-285133572
       OfflinePluginRuntime.install({
         onUpdateReady: function() {
-          store.dispatch(snackbar.show('info', 'An update is available.', 'Update', undefined, () => {
-            OfflinePluginRuntime.applyUpdate();
+          store.dispatch(snackbar.show('info', messages.updateText, {
+            actionLabel: messages.update,
+            action: () => {
+              OfflinePluginRuntime.applyUpdate();
+            },
           }));
         },
         onUpdated: function() {