refactor(prefix): update prefix handling and table initialization logic

Author: SaiKumar2121

lib/index.js

@@ -56,23 +56,19 @@ class ErrsolePostgres extends EventEmitter {
   constructor (options = {}) {
     super();
 
-    const { tablePrefix = '', ...pgOptions } = options;
+    let { tablePrefix, ...pgOptions } = options;
+    tablePrefix = tablePrefix ? `errsole_${tablePrefix.toLowerCase().replace(/[^a-z0-9]/g, '')}` : 'errsole';
 
-    this.tablePrefix = tablePrefix
-      ? `errsole_${tablePrefix.toLowerCase().replace(/[^a-z0-9]/g, '')}`
-      : 'errsole';
-
-    this.logsTable = `${this.tablePrefix}_logs_v2`;
-    this.usersTable = `${this.tablePrefix}_users`;
-    this.configTable = `${this.tablePrefix}_config`;
-    this.notificationsTable = `${this.tablePrefix}_notifications`;
+    this.isConnectionInProgress = true;
+    this.pool = new Pool(pgOptions);
+    this.logsTable = `${tablePrefix}_logs_v2`;
+    this.usersTable = `${tablePrefix}_users`;
+    this.configTable = `${tablePrefix}_config`;
+    this.notificationsTable = `${tablePrefix}_notifications`;
 
     this.name = require('../package.json').name;
     this.version = require('../package.json').version || '0.0.0';
 
-    this.isConnectionInProgress = true;
-    this.pool = new Pool(pgOptions);
-
     this.pendingLogs = [];
     this.batchSize = 100;
     this.flushInterval = 1000;