StockSpark MCP Server

class Logger { constructor() { this.logLevel = process.env.LOG_LEVEL || 'info'; this.levels = { error: 0, warn: 1, info: 2, debug: 3 }; } shouldLog(level) { return this.levels[level] <= this.levels[this.logLevel]; } formatMessage(level, message, data = null) { const timestamp = new Date().toISOString(); const prefix = `[${timestamp}] [${level.toUpperCase()}]`; if (data) { return `${prefix} ${message} ${JSON.stringify(data, null, 2)}`; } return `${prefix} ${message}`; } error(message, data = null) { if (this.shouldLog('error')) { console.error(this.formatMessage('error', message, data)); } } warn(message, data = null) { if (this.shouldLog('warn')) { console.warn(this.formatMessage('warn', message, data)); } } info(message, data = null) { if (this.shouldLog('info')) { console.error(this.formatMessage('info', message, data)); // Use stderr for MCP } } debug(message, data = null) { if (this.shouldLog('debug')) { console.error(this.formatMessage('debug', message, data)); // Use stderr for MCP } } // Special method for API request/response logging apiRequest(method, url, data = null) { this.info(`API Request: ${method} ${url}`, data ? { body: data } : null); } apiResponse(status, statusText, url, data = null) { const level = status >= 400 ? 'error' : 'info'; this[level](`API Response: ${status} ${statusText}`, data ? { url, response: data } : { url }); } // Method for performance timing time(label) { if (this.shouldLog('debug')) { console.time(label); } } timeEnd(label) { if (this.shouldLog('debug')) { console.timeEnd(label); } } } // Create singleton instance const logger = new Logger(); module.exports = { logger, Logger };