start the path to rust

dist_ts/mail/delivery/smtpclient/utils/helpers.d.ts

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+/**
+ * SMTP Client Helper Functions
+ * Protocol helper functions and utilities
+ */
+import type { ISmtpResponse, ISmtpCapabilities } from '../interfaces.js';
+/**
+ * Parse SMTP server response
+ */
+export declare function parseSmtpResponse(data: string): ISmtpResponse;
+/**
+ * Parse EHLO response and extract capabilities
+ */
+export declare function parseEhloResponse(response: string): ISmtpCapabilities;
+/**
+ * Format SMTP command with proper line ending
+ */
+export declare function formatCommand(command: string, ...args: string[]): string;
+/**
+ * Encode authentication string for AUTH PLAIN
+ */
+export declare function encodeAuthPlain(username: string, password: string): string;
+/**
+ * Encode authentication string for AUTH LOGIN
+ */
+export declare function encodeAuthLogin(value: string): string;
+/**
+ * Generate OAuth2 authentication string
+ */
+export declare function generateOAuth2String(username: string, accessToken: string): string;
+/**
+ * Check if response code indicates success
+ */
+export declare function isSuccessCode(code: number): boolean;
+/**
+ * Check if response code indicates temporary failure
+ */
+export declare function isTemporaryFailure(code: number): boolean;
+/**
+ * Check if response code indicates permanent failure
+ */
+export declare function isPermanentFailure(code: number): boolean;
+/**
+ * Escape email address for SMTP commands
+ */
+export declare function escapeEmailAddress(email: string): string;
+/**
+ * Extract email address from angle brackets
+ */
+export declare function extractEmailAddress(email: string): string;
+/**
+ * Generate unique connection ID
+ */
+export declare function generateConnectionId(): string;
+/**
+ * Format timeout duration for human readability
+ */
+export declare function formatTimeout(milliseconds: number): string;
+/**
+ * Validate and normalize email data size
+ */
+export declare function validateEmailSize(emailData: string, maxSize?: number): boolean;
+/**
+ * Clean sensitive data from logs
+ */
+export declare function sanitizeForLogging(data: any): any;
+/**
+ * Calculate exponential backoff delay
+ */
+export declare function calculateBackoffDelay(attempt: number, baseDelay?: number): number;
+/**
+ * Parse enhanced status code
+ */
+export declare function parseEnhancedStatusCode(code: string): {
+    class: number;
+    subject: number;
+    detail: number;
+} | null;