84 lines
2.4 KiB
JavaScript
84 lines
2.4 KiB
JavaScript
/**
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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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/* global __fbBatchedBridge, self, importScripts, postMessage, onmessage: true */
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/* eslint no-unused-vars: 0 */
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'use strict';
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onmessage = (function() {
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var visibilityState;
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var showVisibilityWarning = (function() {
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var hasWarned = false;
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return function() {
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// Wait until `YellowBox` gets initialized before displaying the warning.
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if (hasWarned || console.warn.toString().includes('[native code]')) {
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return;
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}
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hasWarned = true;
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console.warn(
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'Remote debugger is in a background tab which may cause apps to ' +
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'perform slowly. Fix this by foregrounding the tab (or opening it in ' +
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'a separate window).'
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);
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};
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})();
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var messageHandlers = {
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'executeApplicationScript': function(message, sendReply) {
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for (var key in message.inject) {
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self[key] = JSON.parse(message.inject[key]);
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}
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var error;
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try {
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importScripts(message.url);
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} catch (err) {
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error = err.message;
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}
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sendReply(null /* result */, error);
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},
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'setDebuggerVisibility': function(message) {
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visibilityState = message.visibilityState;
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},
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};
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return function(message) {
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if (visibilityState === 'hidden') {
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showVisibilityWarning();
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}
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var object = message.data;
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var sendReply = function(result, error) {
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postMessage({replyID: object.id, result: result, error: error});
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};
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var handler = messageHandlers[object.method];
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if (handler) {
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// Special cased handlers
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handler(object, sendReply);
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} else {
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// Other methods get called on the bridge
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var returnValue = [[], [], [], 0];
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var error;
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try {
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if (typeof __fbBatchedBridge === 'object') {
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returnValue = __fbBatchedBridge[object.method].apply(null, object.arguments);
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} else {
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error = 'Failed to call function, __fbBatchedBridge is undefined';
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}
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} catch (err) {
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error = err.message;
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} finally {
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sendReply(JSON.stringify(returnValue), error);
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}
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}
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};
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})();
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