githubmr/facebook-react: The library for web and native user interfaces.

packages/shared/invariant.js

25 строк784 B

Andrew Clark

Compile invariant directly to throw expressions (#15071)

18 мар 2019, 23:58

18 мар 2019, 23:5842c3c96

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

/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments
 * to provide information about what broke and what you were
 * expecting.
 *
 * The invariant message will be stripped in production, but the invariant
 * will remain to ensure logic does not differ in production.
 */

export default function invariant(condition, format, a, b, c, d, e, f) {
  throw new Error(
    'Internal React error: invariant() is meant to be replaced at compile ' +
      'time. There is no runtime version.',
  );
}