first commit

common/resources/client/i18n/mixed-text.tsx

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+import {MessageDescriptor} from './message-descriptor';
+import {Trans} from './trans';
+import {Fragment} from 'react';
+
+interface Props {
+  value?: string | MessageDescriptor | null;
+}
+export function MixedText({value}: Props) {
+  if (!value) {
+    return null;
+  }
+  if (typeof value === 'string') {
+    return <Fragment>{value}</Fragment>;
+  }
+  return <Trans {...value} />;
+}