Update logger.ts (#668)

Created a separate utility function for colorizing log levels and
timestamps. Added comments and documentation to make the code more
understandable. Used template strings for better readability in the
"console.log" statement. Improved the way the log level is fetched by
creating a dedicated getLogLevel function.

Co-authored-by: Himanshu Dixit <[email protected]>
Co-authored-by: Viraj <[email protected]>

js/src/utils/logger.ts

@@ -5,7 +5,7 @@ const levels = {
   warn: 'WARN',
   info: 'INFO',
   debug: 'DEBUG'
-};
+} as const;
 
 const colors = {
   red: (str: string) => `\x1b[31m${str}\x1b[0m`,
@@ -15,7 +15,13 @@ const colors = {
   gray: (str: string) => `\x1b[90m${str}\x1b[0m`
 };
 
-const colorize = (level: string, timestamp: string) => {
+/**
+ * Colorize log level and timestamp.
+ * @param {string} level - The log level.
+ * @param {string} timestamp - The timestamp.
+ * @returns {Object} - Object containing colored level and timestamp.
+ */
+const colorize = (level: keyof typeof levels, timestamp: string): { level: string; timestamp: string } => {
   switch (level) {
     case 'error':
       return { level: colors.red(levels[level]), timestamp: colors.gray(timestamp) };
@@ -30,18 +36,30 @@ const colorize = (level: string, timestamp: string) => {
   }
 };
 
+/**
+ * Get the current log level from environment variables.
+ * @returns {string} - The current log level.
+ */
+const getLogLevel = (): keyof typeof levels => {
+  const envLevel = getEnvVariable("COMPOSIO_DEBUG", "0");
+  return envLevel === "1" ? 'debug' : 'info';
+};
+
+/**
+ * Logger utility to log messages with different levels.
+ */
 const logger = {
-  level: getEnvVariable("COMPOSIO_DEBUG", "0") === "1" ? 'debug' : 'info',
-  log: (level: string, message: string, meta?: any) => {
-    const timestamp = new Date().toLocaleTimeString();
+  level: getLogLevel(),
+  log: (level: keyof typeof levels, message: string, meta?: any): void => {
+    const timestamp = new Date().toLocaleString();
     const { level: coloredLevel, timestamp: coloredTimestamp } = colorize(level, timestamp);
     const metaInfo = meta ? ` - ${JSON.stringify(meta)}` : '';
     console.log(`[${coloredLevel}] ${coloredTimestamp} ${message}${metaInfo}`);
   },
-  error: (message: string, meta?: any) => logger.log('error', message, meta),
-  warn: (message: string, meta?: any) => logger.log('warn', message, meta),
-  info: (message: string, meta?: any) => logger.log('info', message, meta),
-  debug: (message: string, meta?: any) => logger.log('debug', message, meta)
+  error: (message: string, meta?: any): void => logger.log('error', message, meta),
+  warn: (message: string, meta?: any): void => logger.log('warn', message, meta),
+  info: (message: string, meta?: any): void => logger.log('info', message, meta),
+  debug: (message: string, meta?: any): void => logger.log('debug', message, meta)
 };
 
 export default logger;