Clean/sanitize a JSON file by removing comments and trailing commas.

clean-json.ts

function cleanTsConfig(content: string) {
  return (
    content
      // Remove comments
      .replace(
        /(?:\r\n|\n|^)(?:[^'"])*?(?:'(?:[^\r\n\\']|\\'|[\\]{2})*'|"(?:[^\r\n\\"]|\\"|[\\]{2})*")*?(?:[^'"])*?(\/\*(?:[\s\S]*?)\*\/|\/\/.*)/g,
        ""
      )
      // Remove trailing commas
      .replace(/,(\s+\])/gm, "$1")
      .replace(/,(\s+\})/gm, "$1")
  );
}