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function setPrototypeOf(obj: any, proto: any) {  // eslint-disable-line @typescript-eslint/no-explicit-any  if (Object.setPrototypeOf) {    Object.setPrototypeOf(obj, proto);  } else {    obj.__proto__ = proto;  }}
// This is pretty much the only way to get nice, extended Errors// without using ES6
/** * This returns a new Error with a custom prototype. Note that it's _not_ a constructor * * @param message Error message * * **Example** * * ```js * throw EtaErr("template not found") * ``` */
export default function EtaErr(message: string): Error {  var err = new Error(message);  setPrototypeOf(err, EtaErr.prototype);  return err;}
EtaErr.prototype = Object.create(Error.prototype, {  name: { value: "Eta Error", enumerable: false },});
/** * Throws an EtaErr with a nicely formatted error and message showing where in the template the error occurred. */
export function ParseErr(message: string, str: string, indx: number) {  var whitespace = str.slice(0, indx).split(/\n/);
  var lineNo = whitespace.length;  var colNo = whitespace[lineNo - 1].length + 1;  message += " at line " +    lineNo +    " col " +    colNo +    ":\n\n" +    "  " +    str.split(/\n/)[lineNo - 1] +    "\n" +    "  " +    Array(colNo).join(" ") +    "^";  throw EtaErr(message);}