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Constants from 'expo-constants';\nimport prettyFormat from 'pretty-format';\nimport parseErrorStack, { StackFrame } from 'react-native/Libraries/Core/Devtools/parseErrorStack';\nimport symbolicateStackTrace from 'react-native/Libraries/Core/Devtools/symbolicateStackTrace';\n\nimport { LogData, LogLevel } from './RemoteLogging';\nimport ReactNodeFormatter from './format/ReactNodeFormatter';\n\ntype SerializedData = {\n body: LogData[];\n includesStack: boolean;\n};\n\nexport const EXPO_CONSOLE_METHOD_NAME = '__expoConsoleLog';\n\nasync function serializeLogDataAsync(data: unknown[], level: LogLevel): Promise<SerializedData> {\n let serializedValues: readonly LogData[];\n let includesStack = false;\n\n if (_stackTraceLogsSupported()) {\n if (_isUnhandledPromiseRejection(data, level)) {\n const rawStack = data[0] as string;\n const syntheticError = { stack: rawStack };\n const stack = await _symbolicateErrorAsync(syntheticError as Error);\n\n if (!stack.length) {\n serializedValues = _stringifyLogData(data);\n } else {\n // NOTE: This doesn't handle error messages with newlines\n const errorMessage = rawStack.split('\\n')[1];\n serializedValues = [\n {\n message: `[Unhandled promise rejection: ${errorMessage}]`,\n stack: _formatStack(stack),\n },\n ];\n includesStack = true;\n }\n } else if (data.length === 1 && data[0] instanceof Error) {\n // When there's only one argument to the log function and that argument is an error, we\n // include the error's stack. 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This is just confusing and we don't\n // want to include it in the expo-cli output\n const messageParts = message.split('\\n');\n const firstUselessLine = messageParts.indexOf('This error is located at:');\n if (firstUselessLine > 0) {\n message = messageParts.slice(0, firstUselessLine - 1).join('\\n');\n }\n\n if (!error.stack || !error.stack.length) {\n return prettyFormat(error);\n }\n\n const stack = await _symbolicateErrorAsync(error);\n const formattedStack = _formatStack(stack);\n\n return { message, stack: formattedStack };\n}\n\nasync function _symbolicateErrorAsync(error: Error): Promise<StackFrame[]> {\n const parsedStack = parseErrorStack(error);\n let symbolicatedStack: StackFrame[] | null;\n try {\n // @ts-ignore: symbolicateStackTrace has different real/Flow declaration\n // than the one in DefinitelyTyped.\n symbolicatedStack = (await symbolicateStackTrace(parsedStack))?.stack ?? null;\n } catch (error) {\n return parsedStack;\n }\n\n // In this context an unsymbolicated stack is better than no stack\n if (!symbolicatedStack) {\n return parsedStack;\n }\n\n // Clean the stack trace\n return symbolicatedStack.map(_removeProjectRoot);\n}\n\nfunction _formatStack(stack: StackFrame[]): string {\n return stack\n .map(frame => {\n let line = `${frame.file}:${frame.lineNumber}`;\n if (frame.column != null) {\n line += `:${frame.column}`;\n }\n line += ` in ${frame.methodName}`;\n return line;\n })\n .join('\\n');\n}\n\nfunction _removeProjectRoot(frame: StackFrame): StackFrame {\n let filename = frame.file;\n if (filename == null) {\n return frame;\n }\n\n const projectRoot = _getProjectRoot();\n if (projectRoot == null) {\n return frame;\n }\n\n if (filename.startsWith(projectRoot)) {\n filename = filename.substring(projectRoot.length);\n if (filename[0] === '/' || filename[0] === '\\\\') {\n filename = filename.substring(1);\n }\n frame.file = filename;\n }\n\n return frame;\n}\n\n/**\n * Returns whether the development server that served this project supports logs with a stack trace.\n * Specifically, the version of Expo CLI that includes `projectRoot` in the manifest also accepts\n * payloads of the form:\n *\n * {\n * includesStack: boolean, body: [{ message: string, stack: string }],\n * }\n */\nfunction _stackTraceLogsSupported(): boolean {\n return !!(__DEV__ && _getProjectRoot());\n}\n\nfunction _isUnhandledPromiseRejection(data: unknown[], level: LogLevel): boolean {\n return (\n level === 'warn' &&\n typeof data[0] === 'string' &&\n /^Possible Unhandled Promise Rejection/.test(data[0] as string)\n );\n}\n\nfunction _captureConsoleStackTrace(): Error {\n try {\n throw new Error();\n } catch (error) {\n let stackLines = error.stack.split('\\n');\n const consoleMethodIndex = stackLines.findIndex(frame =>\n frame.includes(EXPO_CONSOLE_METHOD_NAME)\n );\n if (consoleMethodIndex !== -1) {\n stackLines = stackLines.slice(consoleMethodIndex + 1);\n error.stack = stackLines.join('\\n');\n }\n return error;\n }\n}\n\nfunction _getProjectRoot(): string | null {\n return Constants.manifest?.developer?.projectRoot ?? null;\n}\n\nexport default {\n serializeLogDataAsync,\n};\n"]} |