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* Logger adapter for Vite
* Translates core events into Vite logs
*/
import type { Logger } from 'vite';
export type LogLevel = 'debug' | 'info' | 'warn' | 'error';
export interface LoggingOptions {
level?: LogLevel;
enableRequestLogging?: boolean;
enableRouteLogging?: boolean;
}
const RESET = '\x1b[0m';
/**
* Formats the [vitek] tag with green color and bold
* Uses ANSI codes: \x1b[1m = bold, \x1b[32m = green, \x1b[0m = reset
*/
function formatTag(text: string): string {
return `\x1b[1m\x1b[32m${text}${RESET}`;
}
/** ANSI color for HTTP method in Registered routes (method only) */
function methodColor(method: string): string {
const m = method.toUpperCase();
switch (m) {
case 'GET': return '\x1b[32m'; // green
case 'POST': return '\x1b[33m'; // yellow
case 'PUT': return '\x1b[34m'; // blue
case 'PATCH': return '\x1b[36m'; // cyan
case 'DELETE': return '\x1b[31m'; // red
case 'HEAD':
case 'OPTIONS': return '\x1b[90m'; // gray
default: return '\x1b[0m';
}
}
/** ANSI color for "WS" in Registered sockets */
const WS_COLOR = '\x1b[95m'; // bright magenta (pink)
const PAYLOAD_PREVIEW_MAX = 80;
function payloadPreview(data: unknown): string {
Iif (data === undefined || data === null) return '';
Iif (typeof data === 'string') return data.length <= PAYLOAD_PREVIEW_MAX ? data : data.slice(0, PAYLOAD_PREVIEW_MAX) + '…';
Iif (Buffer.isBuffer(data)) return `<Buffer ${data.length} bytes>`;
try {
const s = JSON.stringify(data);
return s.length <= PAYLOAD_PREVIEW_MAX ? s : s.slice(0, PAYLOAD_PREVIEW_MAX) + '…';
} catch {
return String(data).slice(0, PAYLOAD_PREVIEW_MAX);
}
}
/**
* Checks if a log level should be logged based on the configured level
*/
function shouldLog(level: LogLevel, configuredLevel: LogLevel): boolean {
const levels: LogLevel[] = ['debug', 'info', 'warn', 'error'];
const levelIndex = levels.indexOf(level);
const configuredIndex = levels.indexOf(configuredLevel);
return levelIndex >= configuredIndex;
}
export interface VitekLogger {
debug(message: string, data?: Record<string, any>): void;
info(message: string, data?: Record<string, any>): void;
warn(message: string, data?: Record<string, any>): void;
error(message: string, data?: Record<string, any>): void;
routesRegistered(routes: Array<{ method: string; pattern: string }>, apiBasePath: string): void;
socketsRegistered(sockets: Array<{ pattern: string }>, socketBasePath: string): void;
routeMatched(pattern: string, method: string): void;
middlewareLoaded(count: number): void;
typesGenerated(outputPath: string): void;
servicesGenerated(outputPath: string): void;
/** Log when a request is received (endpoint called). Only when enableRequestLogging. */
requestStart(method: string, path: string): void;
request(method: string, path: string, statusCode: number, duration?: number): void;
response(method: string, path: string, statusCode: number, duration?: number): void;
/** Socket events (only logged when enableRequestLogging is true) */
socketConnected(path: string, pattern?: string): void;
socketDisconnected(path: string, pattern?: string): void;
socketMessageReceived(path: string, pattern?: string, data?: unknown): void;
socketMessageEmitted(path: string, data?: unknown): void;
getOptions(): LoggingOptions;
}
/**
* Creates a logger that uses Vite's logger
*/
export function createViteLogger(viteLogger: Logger, options?: LoggingOptions): VitekLogger {
const tag = formatTag('[vitek]');
const logLevel: LogLevel = options?.level || 'info';
const enableRequestLogging = options?.enableRequestLogging || false;
const enableRouteLogging = options?.enableRouteLogging !== false; // Default true
const formatData = (data?: Record<string, any>): string => {
Eif (!data || Object.keys(data).length === 0) {
return '';
}
return ' ' + JSON.stringify(data);
};
return {
debug(message: string, data?: Record<string, any>) {
if (shouldLog('debug', logLevel)) {
viteLogger.info(`${tag} [DEBUG] ${message}${formatData(data)}`, { timestamp: true });
}
},
info(message: string, data?: Record<string, any>) {
Eif (shouldLog('info', logLevel)) {
viteLogger.info(`${tag} ${message}${formatData(data)}`, { timestamp: true });
}
},
warn(message: string, data?: Record<string, any>) {
if (shouldLog('warn', logLevel)) {
viteLogger.warn(`${tag} ${message}${formatData(data)}`, { timestamp: true });
}
},
error(message: string, data?: Record<string, any>) {
if (shouldLog('error', logLevel)) {
viteLogger.error(`${tag} ${message}${formatData(data)}`, { timestamp: true });
}
},
routesRegistered(routes: Array<{ method: string; pattern: string }>, apiBasePath: string) {
if (routes.length === 0) {
Eif (shouldLog('info', logLevel)) {
viteLogger.info(`${tag} No routes registered`, { timestamp: true });
}
return;
}
Eif (shouldLog('info', logLevel)) {
const routesList = routes
.map(r => {
const pattern = r.pattern === '' ? '/' : `/${r.pattern}`;
const method = r.method.toUpperCase();
return ` ${methodColor(r.method)}${method}${RESET} ${apiBasePath}${pattern}`;
})
.join('\n');
viteLogger.info(
`${tag} Registered routes:\n${routesList}`,
{ timestamp: true }
);
}
},
socketsRegistered(sockets: Array<{ pattern: string }>, socketBasePath: string) {
if (sockets.length === 0) {
Eif (shouldLog('info', logLevel)) {
viteLogger.info(`${tag} No sockets registered`, { timestamp: true });
}
return;
}
Eif (shouldLog('info', logLevel)) {
const socketsList = sockets
.map(s => {
const pathSegment = s.pattern === '' ? '' : `/${s.pattern}`;
return ` ${WS_COLOR}WS${RESET} ${socketBasePath}${pathSegment}`;
})
.join('\n');
viteLogger.info(
`${tag} Registered sockets:\n${socketsList}`,
{ timestamp: true }
);
}
},
routeMatched(pattern: string, method: string) {
if (enableRouteLogging && shouldLog('debug', logLevel)) {
viteLogger.info(
`${tag} [ROUTE] ${method.toUpperCase()} ${pattern}`,
{ timestamp: true }
);
}
},
middlewareLoaded(count: number) {
Eif (shouldLog('info', logLevel)) {
viteLogger.info(
`${tag} Loaded ${count} global middleware(s)`,
{ timestamp: true }
);
}
},
typesGenerated(outputPath: string) {
Eif (shouldLog('info', logLevel)) {
viteLogger.info(
`${tag} Generated types: ${outputPath}`,
{ timestamp: true }
);
}
},
servicesGenerated(outputPath: string) {
Eif (shouldLog('info', logLevel)) {
viteLogger.info(
`${tag} Generated services: ${outputPath}`,
{ timestamp: true }
);
}
},
requestStart(method: string, path: string) {
if (enableRequestLogging && shouldLog('info', logLevel)) {
const m = method.toUpperCase();
viteLogger.info(
`${tag} ${methodColor(method)}[${m}]${RESET} ${path} →`,
{ timestamp: true }
);
}
},
request(method: string, path: string, statusCode: number, duration?: number) {
if (enableRequestLogging && shouldLog('info', logLevel)) {
const durationStr = duration !== undefined ? ` (${duration}ms)` : '';
const statusColor = statusCode >= 500 ? '\x1b[31m' : statusCode >= 400 ? '\x1b[33m' : '\x1b[32m';
const m = method.toUpperCase();
viteLogger.info(
`${tag} ${methodColor(method)}[${m}]${RESET} ${path} ${statusColor}${statusCode}${RESET}${durationStr}`,
{ timestamp: true }
);
}
},
response(method: string, path: string, statusCode: number, duration?: number) {
// Alias for request (for consistency)
this.request(method, path, statusCode, duration);
},
socketConnected(path: string, pattern?: string) {
if (enableRequestLogging && shouldLog('info', logLevel)) {
viteLogger.info(`${tag} ${WS_COLOR}[WS]${RESET} connected ${path}`, { timestamp: true });
}
},
socketDisconnected(path: string, pattern?: string) {
if (enableRequestLogging && shouldLog('info', logLevel)) {
viteLogger.info(`${tag} ${WS_COLOR}[WS]${RESET} disconnected ${path}`, { timestamp: true });
}
},
socketMessageReceived(path: string, pattern?: string, data?: unknown) {
if (enableRequestLogging && shouldLog('info', logLevel)) {
const preview = payloadPreview(data);
const suffix = preview ? ` ${preview}` : '';
viteLogger.info(`${tag} ${WS_COLOR}[WS]${RESET} received ${path}${suffix}`, { timestamp: true });
}
},
socketMessageEmitted(path: string, data?: unknown) {
if (enableRequestLogging && shouldLog('info', logLevel)) {
const preview = payloadPreview(data);
const suffix = preview ? ` ${preview}` : '';
viteLogger.info(`${tag} ${WS_COLOR}[WS]${RESET} emitted ${path}${suffix}`, { timestamp: true });
}
},
getOptions(): LoggingOptions {
return {
level: logLevel,
enableRequestLogging,
enableRouteLogging,
};
},
};
}
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