55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
/**
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* Copyright (c) 2017-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule ReactNativeVersionCheck
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* @flow
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* @format
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*/
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'use strict';
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const {PlatformConstants} = require('NativeModules');
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const ReactNativeVersion = require('ReactNativeVersion');
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/**
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* Checks that the version of this React Native JS is compatible with the native
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* code, throwing an error if it isn't.
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*
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* The existence of this module is part of the public interface of React Native
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* even though it is used only internally within React Native. React Native
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* implementations for other platforms (ex: Windows) may override this module
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* and rely on its existence as a separate module.
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*/
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exports.checkVersions = function checkVersions(): void {
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if (!PlatformConstants) {
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return;
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}
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const nativeVersion = PlatformConstants.reactNativeVersion;
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if (
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ReactNativeVersion.version.major !== nativeVersion.major ||
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ReactNativeVersion.version.minor !== nativeVersion.minor
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) {
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console.error(
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`React Native version mismatch.\n\nJavaScript version: ${_formatVersion(
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ReactNativeVersion.version,
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)}\n` +
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`Native version: ${_formatVersion(nativeVersion)}\n\n` +
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'Make sure that you have rebuilt the native code. If the problem ' +
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'persists try clearing the Watchman and packager caches with ' +
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'`watchman watch-del-all && react-native start --reset-cache`.',
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);
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}
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};
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function _formatVersion(version): string {
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return (
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`${version.major}.${version.minor}.${version.patch}` +
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(version.prerelease !== null ? `-${version.prerelease}` : '')
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);
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}
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