function write(level, message, meta) {
    const line = `[${new Date().toISOString()}] [${level.toUpperCase()}] ${message}`;
    if (meta !== undefined) {
        process.stderr.write(`${line} ${JSON.stringify(meta)}\n`);
    }
    else {
        process.stderr.write(`${line}\n`);
    }
}
export const logger = {
    debug: (message, meta) => write('debug', message, meta),
    info: (message, meta) => write('info', message, meta),
    warn: (message, meta) => write('warn', message, meta),
    error: (message, meta) => write('error', message, meta),
};
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