Files
react-native/Libraries/Core/ReactNativeVersionCheck.js
T
Rubén Norte 4409642811 Migrate large amount of modules to flow strict and strict-local
Summary:
| Group | Before | After | Change |
| Untyped | 50 | 49 | -1 |
| flow | 197 | 155 | -42 |
| flow strict-local | 226 | 185 | -41 |
| flow strict | 33 | 117 | +84

Changelog: [Changed] Improved Flow typing of multiple modules (with migrations to `flow strict` and `flow strict-local`

Reviewed By: motiz88

Differential Revision: D22549140

fbshipit-source-id: ed29415332cfce15b244ee4dea9e13d035543175
2020-07-22 09:46:16 -07:00

50 lines
1.7 KiB
JavaScript

/**
* 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.
*
* @flow strict
* @format
*/
'use strict';
import Platform from '../Utilities/Platform';
const ReactNativeVersion = require('./ReactNativeVersion');
/**
* Checks that the version of this React Native JS is compatible with the native
* code, throwing an error if it isn't.
*
* The existence of this module is part of the public interface of React Native
* even though it is used only internally within React Native. React Native
* implementations for other platforms (ex: Windows) may override this module
* and rely on its existence as a separate module.
*/
exports.checkVersions = function checkVersions(): void {
const nativeVersion = Platform.constants.reactNativeVersion;
if (
ReactNativeVersion.version.major !== nativeVersion.major ||
ReactNativeVersion.version.minor !== nativeVersion.minor
) {
console.error(
`React Native version mismatch.\n\nJavaScript version: ${_formatVersion(
ReactNativeVersion.version,
)}\n` +
`Native version: ${_formatVersion(nativeVersion)}\n\n` +
'Make sure that you have rebuilt the native code. If the problem ' +
'persists try clearing the Watchman and packager caches with ' +
'`watchman watch-del-all && react-native start --reset-cache`.',
);
}
};
function _formatVersion(version): string {
return (
`${version.major}.${version.minor}.${version.patch}` +
// eslint-disable-next-line eqeqeq
(version.prerelease != undefined ? `-${version.prerelease}` : '')
);
}