72 lines
2.0 KiB
JavaScript
72 lines
2.0 KiB
JavaScript
/**
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* Copyright 2004-present Facebook. All Rights Reserved.
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*
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* @providesModule ExceptionsManager
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*/
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'use strict';
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var Platform = require('Platform');
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var RCTExceptionsManager = require('NativeModules').ExceptionsManager;
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var loadSourceMap = require('loadSourceMap');
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var parseErrorStack = require('parseErrorStack');
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var sourceMapPromise;
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function handleException(e) {
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var stack = parseErrorStack(e);
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console.error(
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'Error: ' +
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'\n stack: \n' + stackToString(stack) +
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'\n URL: ' + e.sourceURL +
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'\n line: ' + e.line +
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'\n message: ' + e.message
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);
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if (RCTExceptionsManager) {
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RCTExceptionsManager.reportUnhandledException(e.message, format(stack));
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if (__DEV__) {
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(sourceMapPromise = sourceMapPromise || loadSourceMap())
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.then(map => {
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var prettyStack = parseErrorStack(e, map);
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RCTExceptionsManager.updateExceptionMessage(e.message, format(prettyStack));
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})
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.then(null, error => {
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console.error('#CLOWNTOWN (error while displaying error): ' + error.message);
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});
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}
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}
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}
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function stackToString(stack) {
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var maxLength = Math.max.apply(null, stack.map(frame => frame.methodName.length));
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return stack.map(frame => stackFrameToString(frame, maxLength)).join('\n');
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}
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function stackFrameToString(stackFrame, maxLength) {
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var fileNameParts = stackFrame.file.split('/');
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var fileName = fileNameParts[fileNameParts.length - 1];
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if (fileName.length > 18) {
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fileName = fileName.substr(0, 17) + '\u2026' /* ... */;
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}
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var spaces = fillSpaces(maxLength - stackFrame.methodName.length);
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return ' ' + stackFrame.methodName + spaces + ' ' + fileName + ':' + stackFrame.lineNumber;
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}
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function fillSpaces(n) {
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return new Array(n + 1).join(' ');
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}
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// HACK(frantic) Android currently expects stack trace to be a string #5920439
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function format(stack) {
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if (Platform.OS === 'android') {
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return stackToString(stack);
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} else {
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return stack;
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}
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}
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module.exports = { handleException };
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