Add type annotation for DisplayName component (#24752)

app/javascript/mastodon/components/display_name.tsx

@@ -0,0 +1,115 @@
+import React from 'react';
+import { autoPlayGif } from '..//initial_state';
+import Skeleton from './skeleton';
+import { Account } from '../../types/resources';
+import { List } from 'immutable';
+
+type Props = {
+  account: Account;
+  others: List<Account>;
+  localDomain: string;
+};
+export class DisplayName extends React.PureComponent<Props> {
+  handleMouseEnter: React.ReactEventHandler<HTMLSpanElement> = ({
+    currentTarget,
+  }) => {
+    if (autoPlayGif) {
+      return;
+    }
+
+    const emojis =
+      currentTarget.querySelectorAll<HTMLImageElement>('img.custom-emoji');
+
+    emojis.forEach((emoji) => {
+      const originalSrc = emoji.getAttribute('data-original');
+      if (originalSrc != null) emoji.src = originalSrc;
+    });
+  };
+
+  handleMouseLeave: React.ReactEventHandler<HTMLSpanElement> = ({
+    currentTarget,
+  }) => {
+    if (autoPlayGif) {
+      return;
+    }
+
+    const emojis =
+      currentTarget.querySelectorAll<HTMLImageElement>('img.custom-emoji');
+
+    emojis.forEach((emoji) => {
+      const staticSrc = emoji.getAttribute('data-static');
+      if (staticSrc != null) emoji.src = staticSrc;
+    });
+  };
+
+  render() {
+    const { others, localDomain } = this.props;
+
+    let displayName: React.ReactNode, suffix: React.ReactNode, account: Account;
+
+    if (others && others.size > 1) {
+      displayName = others
+        .take(2)
+        .map((a) => (
+          <bdi key={a.get('id')}>
+            <strong
+              className='display-name__html'
+              dangerouslySetInnerHTML={{ __html: a.get('display_name_html') }}
+            />
+          </bdi>
+        ))
+        .reduce((prev, cur) => [prev, ', ', cur]);
+
+      if (others.size - 2 > 0) {
+        suffix = `+${others.size - 2}`;
+      }
+    } else if ((others && others.size > 0) || this.props.account) {
+      if (others && others.size > 0) {
+        account = others.first();
+      } else {
+        account = this.props.account;
+      }
+
+      let acct = account.get('acct');
+
+      if (acct.indexOf('@') === -1 && localDomain) {
+        acct = `${acct}@${localDomain}`;
+      }
+
+      displayName = (
+        <bdi>
+          <strong
+            className='display-name__html'
+            dangerouslySetInnerHTML={{
+              __html: account.get('display_name_html'),
+            }}
+          />
+        </bdi>
+      );
+      suffix = <span className='display-name__account'>@{acct}</span>;
+    } else {
+      displayName = (
+        <bdi>
+          <strong className='display-name__html'>
+            <Skeleton width='10ch' />
+          </strong>
+        </bdi>
+      );
+      suffix = (
+        <span className='display-name__account'>
+          <Skeleton width='7ch' />
+        </span>
+      );
+    }
+
+    return (
+      <span
+        className='display-name'
+        onMouseEnter={this.handleMouseEnter}
+        onMouseLeave={this.handleMouseLeave}
+      >
+        {displayName} {suffix}
+      </span>
+    );
+  }
+}