44 lines
1.1 KiB
JavaScript
44 lines
1.1 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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var boundErrorHandler = null;
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function errorHandler(callback, e) {
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if (!e.error) {
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return;
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}
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// $FlowFixMe
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var error = e.error;
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if (error instanceof Error) {
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callback(error);
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} else {
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// A non-error was thrown, we don't have a trace. :(
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// Look in your browser's devtools for more information
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callback(new Error(error));
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}
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}
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function registerUnhandledError(target, callback) {
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if (boundErrorHandler !== null) {
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return;
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}
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boundErrorHandler = errorHandler.bind(undefined, callback);
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target.addEventListener('error', boundErrorHandler);
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}
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function unregisterUnhandledError(target) {
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if (boundErrorHandler === null) {
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return;
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}
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target.removeEventListener('error', boundErrorHandler);
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boundErrorHandler = null;
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}
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export { registerUnhandledError as register, unregisterUnhandledError as unregister };
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