) => {
          defineCell(window.MODULE, observer);
        });

        compile.cell(`a = -300`).then(({ redefine: redefineCell }) => {
          redefineCell(window.MODULE);
        });

        compile
          .cell(`viewof x = html\`<input type="number" value="400">\``)
          .then(({ redefine: redefineCell }) => {
            redefineCell(window.MODULE);
          });

        compile
          .cell(
            `import {hello } with {myName as name} from "@tmcw/hello-world"`
          )
     