script-tag-escaping.html

<script>
  document.write(/* HTML */ `
    <script>
      document.write(/* HTML */ \`
        <!-- foo1 -->
        <script>
          document.write(/* HTML */ \\\`<!-- bar1 --> bar <!-- bar2 -->\\\`);
        <\\/script>
        <!-- foo2 -->
      \`);
    <\/script>
  `);
</script>