added comments

src/lib/customConsoleLog.ts

@@ -1,13 +1,16 @@
-let _custom_console_log_injected = false
-if (!_custom_console_log_injected) {
-    _custom_console_log_injected = true
+// Replaces console.log with a version that prefixes a timestamp
+function injectConsoleLog() {
     const originalLog = console.log
 
     function customLog(message?: any, ...optionalParams: any[]) {
         const now = new Date()
         const timestamp = now.toTimeString().split(' ')[0] // hh:mm:ss
-        originalLog(`[${timestamp}] ${message}`, ...optionalParams, ':3')
+        originalLog(`[${timestamp}] ${message}`, ...optionalParams)
     }
 
     console.log = customLog
+    return null
 }
+
+// Run once at first file import
+export const _inject_run_once = injectConsoleLog()