start the path to rust
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dist_ts/mail/delivery/smtpserver/constants.js
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162
dist_ts/mail/delivery/smtpserver/constants.js
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/**
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* SMTP Server Constants
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* This file contains all constants and enums used by the SMTP server
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*/
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import { SmtpState } from '../interfaces.js';
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// Re-export SmtpState enum from the main interfaces file
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export { SmtpState };
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/**
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* SMTP Response Codes
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* Based on RFC 5321 and common SMTP practice
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*/
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export var SmtpResponseCode;
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(function (SmtpResponseCode) {
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// Success codes (2xx)
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SmtpResponseCode[SmtpResponseCode["SUCCESS"] = 250] = "SUCCESS";
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SmtpResponseCode[SmtpResponseCode["SYSTEM_STATUS"] = 211] = "SYSTEM_STATUS";
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SmtpResponseCode[SmtpResponseCode["HELP_MESSAGE"] = 214] = "HELP_MESSAGE";
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SmtpResponseCode[SmtpResponseCode["SERVICE_READY"] = 220] = "SERVICE_READY";
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SmtpResponseCode[SmtpResponseCode["SERVICE_CLOSING"] = 221] = "SERVICE_CLOSING";
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SmtpResponseCode[SmtpResponseCode["AUTHENTICATION_SUCCESSFUL"] = 235] = "AUTHENTICATION_SUCCESSFUL";
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SmtpResponseCode[SmtpResponseCode["OK"] = 250] = "OK";
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SmtpResponseCode[SmtpResponseCode["FORWARD"] = 251] = "FORWARD";
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SmtpResponseCode[SmtpResponseCode["CANNOT_VRFY"] = 252] = "CANNOT_VRFY";
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// Intermediate codes (3xx)
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SmtpResponseCode[SmtpResponseCode["MORE_INFO_NEEDED"] = 334] = "MORE_INFO_NEEDED";
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SmtpResponseCode[SmtpResponseCode["START_MAIL_INPUT"] = 354] = "START_MAIL_INPUT";
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// Temporary error codes (4xx)
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SmtpResponseCode[SmtpResponseCode["SERVICE_NOT_AVAILABLE"] = 421] = "SERVICE_NOT_AVAILABLE";
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SmtpResponseCode[SmtpResponseCode["MAILBOX_TEMPORARILY_UNAVAILABLE"] = 450] = "MAILBOX_TEMPORARILY_UNAVAILABLE";
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SmtpResponseCode[SmtpResponseCode["LOCAL_ERROR"] = 451] = "LOCAL_ERROR";
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SmtpResponseCode[SmtpResponseCode["INSUFFICIENT_STORAGE"] = 452] = "INSUFFICIENT_STORAGE";
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SmtpResponseCode[SmtpResponseCode["TLS_UNAVAILABLE_TEMP"] = 454] = "TLS_UNAVAILABLE_TEMP";
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// Permanent error codes (5xx)
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SmtpResponseCode[SmtpResponseCode["SYNTAX_ERROR"] = 500] = "SYNTAX_ERROR";
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SmtpResponseCode[SmtpResponseCode["SYNTAX_ERROR_PARAMETERS"] = 501] = "SYNTAX_ERROR_PARAMETERS";
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SmtpResponseCode[SmtpResponseCode["COMMAND_NOT_IMPLEMENTED"] = 502] = "COMMAND_NOT_IMPLEMENTED";
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SmtpResponseCode[SmtpResponseCode["BAD_SEQUENCE"] = 503] = "BAD_SEQUENCE";
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SmtpResponseCode[SmtpResponseCode["COMMAND_PARAMETER_NOT_IMPLEMENTED"] = 504] = "COMMAND_PARAMETER_NOT_IMPLEMENTED";
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SmtpResponseCode[SmtpResponseCode["AUTH_REQUIRED"] = 530] = "AUTH_REQUIRED";
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SmtpResponseCode[SmtpResponseCode["AUTH_FAILED"] = 535] = "AUTH_FAILED";
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SmtpResponseCode[SmtpResponseCode["MAILBOX_UNAVAILABLE"] = 550] = "MAILBOX_UNAVAILABLE";
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SmtpResponseCode[SmtpResponseCode["USER_NOT_LOCAL"] = 551] = "USER_NOT_LOCAL";
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SmtpResponseCode[SmtpResponseCode["EXCEEDED_STORAGE"] = 552] = "EXCEEDED_STORAGE";
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SmtpResponseCode[SmtpResponseCode["MAILBOX_NAME_INVALID"] = 553] = "MAILBOX_NAME_INVALID";
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SmtpResponseCode[SmtpResponseCode["TRANSACTION_FAILED"] = 554] = "TRANSACTION_FAILED";
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SmtpResponseCode[SmtpResponseCode["MAIL_RCPT_PARAMETERS_INVALID"] = 555] = "MAIL_RCPT_PARAMETERS_INVALID";
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})(SmtpResponseCode || (SmtpResponseCode = {}));
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/**
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* SMTP Command Types
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*/
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export var SmtpCommand;
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(function (SmtpCommand) {
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SmtpCommand["HELO"] = "HELO";
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SmtpCommand["EHLO"] = "EHLO";
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SmtpCommand["MAIL_FROM"] = "MAIL";
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SmtpCommand["RCPT_TO"] = "RCPT";
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SmtpCommand["DATA"] = "DATA";
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SmtpCommand["RSET"] = "RSET";
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SmtpCommand["NOOP"] = "NOOP";
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SmtpCommand["QUIT"] = "QUIT";
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SmtpCommand["STARTTLS"] = "STARTTLS";
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SmtpCommand["AUTH"] = "AUTH";
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SmtpCommand["HELP"] = "HELP";
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SmtpCommand["VRFY"] = "VRFY";
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SmtpCommand["EXPN"] = "EXPN";
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})(SmtpCommand || (SmtpCommand = {}));
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/**
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* Security log event types
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*/
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export var SecurityEventType;
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(function (SecurityEventType) {
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SecurityEventType["CONNECTION"] = "connection";
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SecurityEventType["AUTHENTICATION"] = "authentication";
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SecurityEventType["COMMAND"] = "command";
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SecurityEventType["DATA"] = "data";
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SecurityEventType["IP_REPUTATION"] = "ip_reputation";
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SecurityEventType["TLS_NEGOTIATION"] = "tls_negotiation";
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SecurityEventType["DKIM"] = "dkim";
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SecurityEventType["SPF"] = "spf";
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SecurityEventType["DMARC"] = "dmarc";
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SecurityEventType["EMAIL_VALIDATION"] = "email_validation";
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SecurityEventType["SPAM"] = "spam";
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SecurityEventType["ACCESS_CONTROL"] = "access_control";
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})(SecurityEventType || (SecurityEventType = {}));
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/**
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* Security log levels
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*/
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export var SecurityLogLevel;
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(function (SecurityLogLevel) {
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SecurityLogLevel["DEBUG"] = "debug";
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SecurityLogLevel["INFO"] = "info";
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SecurityLogLevel["WARN"] = "warn";
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SecurityLogLevel["ERROR"] = "error";
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})(SecurityLogLevel || (SecurityLogLevel = {}));
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/**
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* SMTP Server Defaults
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*/
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export const SMTP_DEFAULTS = {
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// Default timeouts in milliseconds
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CONNECTION_TIMEOUT: 30000, // 30 seconds
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SOCKET_TIMEOUT: 300000, // 5 minutes
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DATA_TIMEOUT: 60000, // 1 minute
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CLEANUP_INTERVAL: 5000, // 5 seconds
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// Default limits
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MAX_CONNECTIONS: 100,
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MAX_RECIPIENTS: 100,
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MAX_MESSAGE_SIZE: 10485760, // 10MB
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// Default ports
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SMTP_PORT: 25,
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SUBMISSION_PORT: 587,
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SECURE_PORT: 465,
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// Default hostname
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HOSTNAME: 'mail.lossless.one',
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// CRLF line ending required by SMTP protocol
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CRLF: '\r\n',
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};
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/**
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* SMTP Command Patterns
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* Regular expressions for parsing SMTP commands
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*/
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export const SMTP_PATTERNS = {
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// Match EHLO/HELO command: "EHLO example.com"
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// Made very permissive to handle various client implementations
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EHLO: /^(?:EHLO|HELO)\s+(.+)$/i,
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// Match MAIL FROM command: "MAIL FROM:<user@example.com> [PARAM=VALUE]"
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// Made more permissive with whitespace and parameter formats
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MAIL_FROM: /^MAIL\s+FROM\s*:\s*<([^>]*)>((?:\s+[a-zA-Z0-9][a-zA-Z0-9\-]*(?:=[^\s]+)?)*)$/i,
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// Match RCPT TO command: "RCPT TO:<user@example.com> [PARAM=VALUE]"
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// Made more permissive with whitespace and parameter formats
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RCPT_TO: /^RCPT\s+TO\s*:\s*<([^>]*)>((?:\s+[a-zA-Z0-9][a-zA-Z0-9\-]*(?:=[^\s]+)?)*)$/i,
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// Match parameter format: "PARAM=VALUE"
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PARAM: /\s+([A-Za-z0-9][A-Za-z0-9\-]*)(?:=([^\s]+))?/g,
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// Match email address format - basic validation
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// This pattern rejects common invalid formats while being permissive for edge cases
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// Checks: no spaces, has @, has domain with dot, no double dots, proper domain format
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EMAIL: /^[^\s@]+@[^\s@]+\.[^\s@]+$/,
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// Match end of DATA marker: \r\n.\r\n or just .\r\n at the start of a line (to handle various client implementations)
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END_DATA: /(\r\n\.\r\n$)|(\n\.\r\n$)|(\r\n\.\n$)|(\n\.\n$)|^\.(\r\n|\n)$/,
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};
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/**
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* SMTP Extension List
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* These extensions are advertised in the EHLO response
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*/
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export const SMTP_EXTENSIONS = {
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// Basic extensions (RFC 1869)
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PIPELINING: 'PIPELINING',
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SIZE: 'SIZE',
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EIGHTBITMIME: '8BITMIME',
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// Security extensions
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STARTTLS: 'STARTTLS',
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AUTH: 'AUTH',
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// Additional extensions
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ENHANCEDSTATUSCODES: 'ENHANCEDSTATUSCODES',
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HELP: 'HELP',
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CHUNKING: 'CHUNKING',
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DSN: 'DSN',
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// Format an extension with a parameter
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formatExtension(name, parameter) {
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return parameter !== undefined ? `${name} ${parameter}` : name;
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}
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};
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