BookStackApp/BookStack

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */

// invariant(condition, message) will refine types based on "condition", and
// if "condition" is false will throw an error. This function is special-cased
// in flow itself, so we can't name it anything else.
export default function invariant(
  cond?: boolean,
  message?: string,
  ...args: string[]
): asserts cond {
  if (cond) {
    return;
  }

  throw new Error(
    'Internal Lexical error: invariant() is meant to be replaced at compile ' +
      'time. There is no runtime version. Error: ' +
      message,
  );
}