src/cobalt/debug/remote/devtools/node_modules/handlebars/lib/handlebars/exception.js

const errorProps = ['description', 'fileName', 'lineNumber', 'message', 'name', 'number', 'stack'];

function Exception(message, node) {
  let loc = node && node.loc,
      line,
      column;
  if (loc) {
    line = loc.start.line;
    column = loc.start.column;

    message += ' - ' + line + ':' + column;
  }

  let tmp = Error.prototype.constructor.call(this, message);

  // Unfortunately errors are not enumerable in Chrome (at least), so `for prop in tmp` doesn't work.
  for (let idx = 0; idx < errorProps.length; idx++) {
    this[errorProps[idx]] = tmp[errorProps[idx]];
  }

  /* istanbul ignore else */
  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, Exception);
  }

  try {
    if (loc) {
      this.lineNumber = line;

      // Work around issue under safari where we can't directly set the column value
      /* istanbul ignore next */
      if (Object.defineProperty) {
        Object.defineProperty(this, 'column', {
          value: column,
          enumerable: true
        });
      } else {
        this.column = column;
      }
    }
  } catch (nop) {
    /* Ignore if the browser is very particular */
  }
}

Exception.prototype = new Error();

export default Exception;