async function createJsHintOptions() {
  const jshintrc = JSON.parse(
    await readFile(path.join("Apps", "Sandcastle", ".jshintrc"), {
      encoding: "utf8",
    }),
  );

  const contents = `\
  // This file is automatically rebuilt by the Cesium build process.\n\
  const sandcastleJsHintOptions = ${JSON.stringify(jshintrc, null, 4)};\n`;

  await writeFile(
    path.join("Apps", "Sandcastle", "jsHintOptions.js"),
    contents,
  );

  return contents;
}
Creates .jshintrc for use in Sandcastle
@returns {Buffer} contents