next-mdx-remote -> mdx-bundler (#729)

components/embeds/Gist.tsx

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+import Gist from "react-gist";
+
+export default Gist;

components/embeds/Octocat.tsx

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+const Octocat = (props: { repo: string }) => {
+  return (
+    <a
+      className="no-underline"
+      href={`https://github.com/${props.repo}`}
+      target="_blank"
+      rel="noopener noreferrer"
+      style={{ margin: "0 0.3em", color: "var(--text)" }}
+    >
+      <svg
+        xmlns="http://www.w3.org/2000/svg"
+        viewBox="0 0 16 16"
+        width="1em"
+        height="1em"
+        aria-hidden="true"
+        className="icon"
+        fill="currentColor"
+      >
+        <path
+          fillRule="evenodd"
+          d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8z"
+        ></path>
+      </svg>
+    </a>
+  );
+};
+
+export default Octocat;

components/embeds/Tweet.tsx

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+import TweetEmbed from "react-tweet-embed";
+
+const Tweet = (props: { id: string }) => (
+  <TweetEmbed
+    id={props.id}
+    options={{
+      dnt: true,
+      align: "center",
+    }}
+  />
+);
+
+export default Tweet;

components/embeds/Video.tsx

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+import ReactPlayer, { ReactPlayerProps } from "react-player/lazy";
+
+const Video = (props: ReactPlayerProps) => (
+  <div style={{ position: "relative", paddingTop: "56.25%" }}>
+    <ReactPlayer width="100%" height="100%" style={{ position: "absolute", top: 0, left: 0 }} {...props} />
+  </div>
+);
+
+export default Video;