Migrate LastSeenIndicator to Storybook

ts/components/conversation/LastSeenIndicator.md

@@ -1,15 +0,0 @@
-### One
-
-```jsx
-<util.ConversationContext theme={util.theme} ios={util.ios}>
-  <LastSeenIndicator count={1} i18n={util.i18n} />
-</util.ConversationContext>
-```
-
-### More than one
-
-```jsx
-<util.ConversationContext theme={util.theme} ios={util.ios}>
-  <LastSeenIndicator count={2} i18n={util.i18n} />
-</util.ConversationContext>
-```

ts/components/conversation/LastSeenIndicator.stories.tsx

@@ -0,0 +1,32 @@
+import * as React from 'react';
+
+import { number } from '@storybook/addon-knobs';
+import { storiesOf } from '@storybook/react';
+
+import { LastSeenIndicator, Props } from './LastSeenIndicator';
+
+// @ts-ignore
+import { setup as setupI18n } from '../../../js/modules/i18n';
+// @ts-ignore
+import enMessages from '../../../_locales/en/messages.json';
+const i18n = setupI18n('en', enMessages);
+
+const story = storiesOf('Components/Conversation/LastSeenIndicator', module);
+
+const createProps = (overrideProps: Partial<Props> = {}): Props => ({
+  count: number('count', overrideProps.count || 1),
+  i18n,
+});
+
+story.add('One', () => {
+  const props = createProps();
+  return <LastSeenIndicator {...props} />;
+});
+
+story.add('More than One', () => {
+  const props = createProps({
+    count: 5,
+  });
+
+  return <LastSeenIndicator {...props} />;
+});

ts/components/conversation/LastSeenIndicator.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 
 import { LocalizerType } from '../../types/Util';
 
-type Props = {
+export type Props = {
   count: number;
   i18n: LocalizerType;
 };