43 lines
1.9 KiB
JavaScript
43 lines
1.9 KiB
JavaScript
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/**
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* Copyright (c) 2015-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 BatchedBridge
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* @flow
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*/
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'use strict';
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const MessageQueue = require('MessageQueue');
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// MessageQueue can install a global handler to catch all exceptions where JS users can register their own behavior
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// This handler makes all exceptions to be handled inside MessageQueue rather than by the VM at its origin
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// This makes stacktraces to be placed at MessageQueue rather than at where they were launched
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// The parameter __fbUninstallRNGlobalErrorHandler is passed to MessageQueue to prevent the handler from being installed
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//
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// __fbUninstallRNGlobalErrorHandler is conditionally set by the Inspector while the VM is paused for intialization
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// If the Inspector isn't present it defaults to undefined and the global error handler is installed
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// The Inspector can still call MessageQueue#uninstallGlobalErrorHandler to uninstalled on attach
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const BatchedBridge = new MessageQueue(
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// $FlowFixMe
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typeof __fbUninstallRNGlobalErrorHandler !== 'undefined' &&
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__fbUninstallRNGlobalErrorHandler === true, // eslint-disable-line no-undef
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);
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// Wire up the batched bridge on the global object so that we can call into it.
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// Ideally, this would be the inverse relationship. I.e. the native environment
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// provides this global directly with its script embedded. Then this module
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// would export it. A possible fix would be to trim the dependencies in
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// MessageQueue to its minimal features and embed that in the native runtime.
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Object.defineProperty(global, '__fbBatchedBridge', {
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configurable: true,
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value: BatchedBridge,
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});
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module.exports = BatchedBridge;
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