start the path to rust

dist_ts/mail/delivery/smtpclient/auth-handler.d.ts

@@ -0,0 +1,43 @@
+/**
+ * SMTP Client Authentication Handler
+ * Authentication mechanisms implementation
+ */
+import type { ISmtpConnection, ISmtpAuthOptions, ISmtpClientOptions } from './interfaces.js';
+import type { CommandHandler } from './command-handler.js';
+export declare class AuthHandler {
+    private options;
+    private commandHandler;
+    constructor(options: ISmtpClientOptions, commandHandler: CommandHandler);
+    /**
+     * Authenticate using the configured method
+     */
+    authenticate(connection: ISmtpConnection): Promise<void>;
+    /**
+     * Authenticate using AUTH PLAIN
+     */
+    private authenticatePlain;
+    /**
+     * Authenticate using AUTH LOGIN
+     */
+    private authenticateLogin;
+    /**
+     * Authenticate using OAuth2
+     */
+    private authenticateOAuth2;
+    /**
+     * Select appropriate authentication method
+     */
+    private selectAuthMethod;
+    /**
+     * Check if OAuth2 token is expired
+     */
+    private isTokenExpired;
+    /**
+     * Refresh OAuth2 access token
+     */
+    private refreshOAuth2Token;
+    /**
+     * Validate authentication configuration
+     */
+    validateAuthConfig(auth: ISmtpAuthOptions): string[];
+}