jwt-token-pair-generator/dist/logger.js

A secure RSA token pair generator CLI and library for generating and storing RSA keys for JWT

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.logger = void 0;
const pino_1 = __importDefault(require("pino"));
const pino_pretty_1 = __importDefault(require("pino-pretty"));
const promises_1 = __importDefault(require("fs/promises"));
const path_1 = __importDefault(require("path"));
// Define custom levels
const customLevels = {
    step: 50, // Between info (30) and warn (40)
};
class AsyncFileWriter {
    constructor(logFilePath) {
        this.queue = [];
        this.isWriting = false;
        this.logFilePath = logFilePath;
        this.initializeFile();
    }
    initializeFile() {
        return __awaiter(this, void 0, void 0, function* () {
            try {
                // Create directory if it doesn't exist
                yield promises_1.default.mkdir(path_1.default.dirname(this.logFilePath), { recursive: true });
                // Create file if it doesn't exist
                try {
                    yield promises_1.default.access(this.logFilePath);
                }
                catch (_a) {
                    yield promises_1.default.writeFile(this.logFilePath, "[]", "utf-8");
                }
            }
            catch (error) {
                console.error("Error initializing log file:", error);
            }
        });
    }
    addToQueue(entry) {
        return __awaiter(this, void 0, void 0, function* () {
            this.queue.push(entry);
            if (!this.isWriting) {
                yield this.processQueue();
            }
        });
    }
    processQueue() {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.queue.length === 0 || this.isWriting) {
                return;
            }
            this.isWriting = true;
            try {
                // Read existing logs
                let logs = [];
                try {
                    const content = yield promises_1.default.readFile(this.logFilePath, "utf-8");
                    logs = JSON.parse(content);
                }
                catch (error) {
                    logs = [];
                }
                // Add new logs from queue
                logs.push(...this.queue);
                this.queue = [];
                // Write all logs back to file with pretty formatting
                yield promises_1.default.writeFile(this.logFilePath, JSON.stringify(logs, null, 2), "utf-8");
            }
            catch (error) {
                console.error("Error writing to log file:", error);
            }
            finally {
                this.isWriting = false;
                // If more logs were added while writing, process them
                if (this.queue.length > 0) {
                    yield this.processQueue();
                }
            }
        });
    }
}
// Create and configure the logger
const createLogger = (logLevel, logFilePath = path_1.default.join(process.cwd(), "logs", "log.json")) => {
    const fileWriter = new AsyncFileWriter(logFilePath);
    // Configure pino-pretty stream
    const prettyStream = (0, pino_pretty_1.default)({
        colorize: true,
        levelFirst: true,
        translateTime: "SYS:standard",
        customColors: "step:magenta",
        customLevels: "step:35",
        customPrettifiers: {
            time: (timestamp) => `🕒 ${timestamp}`,
            step: (level) => "👉 STEP",
        },
    });
    // Custom destination function for file writing
    const fileDestination = (msg) => {
        try {
            const logObject = JSON.parse(msg);
            const entry = {
                time: new Date(logObject.time).toISOString(),
                logLevel: logObject.level,
                logMessage: logObject.msg,
            };
            // Use setImmediate to make it non-blocking
            setImmediate(() => {
                fileWriter.addToQueue(entry).catch(console.error);
            });
        }
        catch (error) {
            console.error("Error processing log:", error);
        }
    };
    const logger = (0, pino_1.default)({
        customLevels: customLevels,
        useOnlyCustomLevels: false,
        level: logLevel || "warn",
        formatters: {
            level: (label) => ({ level: label }),
        },
    }, pino_1.default.multistream([{ stream: prettyStream }, { stream: { write: fileDestination } }]));
    return logger;
};
// Export singleton instance
exports.logger = createLogger;
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