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stack: string };\n\ntype TransportErrorListener = (event: { error: Error; response?: Response }) => void;\n\nconst _sessionId = uuidv4();\nconst _logQueue: LogEntry[] = [];\nconst _transportEventEmitter = new EventEmitter();\n\nlet _logCounter = 0;\nlet _isSendingLogs = false;\nlet _completionPromise: Promise<void> | null = null;\nlet _resolveCompletion: (() => void) | null = null;\n\nasync function enqueueRemoteLogAsync(\n level: LogLevel,\n additionalFields: LogEntryFields,\n data: unknown[]\n): Promise<void> {\n if (_isReactNativeWarning(data)) {\n // Remove the stack trace from the warning message since we'll capture our own\n if (data.length === 0) {\n throw new Error(`Warnings must include log arguments`);\n }\n const warning = data[0];\n if (typeof warning !== 'string') {\n throw new TypeError(`The log argument for a warning must be a string`);\n }\n const lines = warning.split('\\n');\n if (lines.length > 1 && /^\\s+in /.test(lines[1])) {\n data[0] = lines[0];\n }\n }\n\n const { body, includesStack } = await LogSerialization.serializeLogDataAsync(data, level);\n\n _logQueue.push({\n count: _logCounter++,\n level,\n body,\n includesStack,\n ...additionalFields,\n });\n\n // Send the logs asynchronously (system errors are emitted with transport error events) and throw an uncaught error\n _sendRemoteLogsAsync().catch(error => {\n setImmediate(() => {\n throw error;\n });\n });\n}\n\nasync function _sendRemoteLogsAsync(): Promise<void> {\n if (_isSendingLogs || !_logQueue.length) {\n return;\n }\n\n // Our current transport policy is to send all of the pending log messages in one batch. If we opt\n // for another policy (ex: throttling) this is where to to implement it.\n const batch = _logQueue.splice(0);\n\n const { logUrl } = Constants.manifest;\n if (typeof logUrl !== 'string') {\n throw new Error('The Expo project manifest must specify `logUrl`');\n }\n\n _isSendingLogs = true;\n try {\n await _sendNextLogBatchAsync(batch, logUrl);\n } finally {\n _isSendingLogs = false;\n }\n\n if (_logQueue.length) {\n return _sendRemoteLogsAsync();\n } else if (_resolveCompletion) {\n _resolveCompletion();\n }\n}\n\nasync function _sendNextLogBatchAsync(batch: LogEntry[], logUrl: string): Promise<void> {\n let response;\n\n const headers = {\n 'Content-Type': 'application/json',\n Connection: 'keep-alive',\n 'Proxy-Connection': 'keep-alive',\n Accept: 'application/json',\n 'Device-Id': Constants.installationId,\n 'Session-Id': _sessionId,\n };\n if (Constants.deviceName) {\n headers['Device-Name'] = Constants.deviceName;\n }\n try {\n response = await fetch(logUrl, {\n method: 'POST',\n headers,\n body: JSON.stringify(batch),\n });\n } catch (error) {\n _transportEventEmitter.emit('error', { error });\n return;\n }\n\n const success = response.status >= 200 && response.status < 300;\n if (!success) {\n _transportEventEmitter.emit('error', {\n error: new Error(`An HTTP error occurred when sending remote logs`),\n response,\n });\n }\n}\n\nfunction addTransportErrorListener(listener: TransportErrorListener): EventSubscription {\n return _transportEventEmitter.addListener('error', listener);\n}\n\nfunction _isReactNativeWarning(data: unknown[]): boolean {\n // NOTE: RN does the same thing internally for YellowBox\n const message = data[0];\n return data.length === 1 && typeof message === 'string' && message.startsWith('Warning: ');\n}\n\nexport default {\n enqueueRemoteLogAsync,\n addTransportErrorListener,\n};\n\n/**\n * Returns a promise that resolves when all entries in the log queue have been sent. This method is\n * intended for testing only.\n */\nexport function __waitForEmptyLogQueueAsync(): Promise<void> {\n if (_completionPromise) {\n return _completionPromise;\n }\n\n if (!_isSendingLogs && !_logQueue.length) {\n return Promise.resolve();\n }\n\n _completionPromise = new Promise(resolve => {\n _resolveCompletion = () => {\n invariant(!_isSendingLogs, `Must not be sending logs at completion`);\n invariant(!_logQueue.length, `Log queue must be empty at completion`);\n\n _completionPromise = null;\n _resolveCompletion = null;\n\n resolve();\n };\n });\n return _completionPromise;\n}\n"]} |