@mter/lazy-logger/lib/lazy-logger.js

simple console logger insterface to improve performance by lazy string evaluation

"use strict";
/*!
 * lazy-logger v0.0.1
 *
 * Copyright (c) 2022 upekshe jay <upekshejay@gmail.com>
 * https://github.com/Upekshe/lazy-logger
 *
 * Licensed under the MIT license.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.LOGGER = void 0;
const lazy_logger_interface_1 = require("./lazy-logger-interface");
const DEFAULT_LOG_LEVEL = process.env._LOG_LEVEL == null ? lazy_logger_interface_1.LEVEL.TRACE : process.env._LOG_LEVEL;
let LOG_LEVEL = DEFAULT_LOG_LEVEL;
class LazyLogger {
    setLogLevel(level) {
        if (level < 0 || level > lazy_logger_interface_1.LEVEL.SEVERE) {
            throw new Error("Invalid log level");
        }
        LOG_LEVEL = level;
    }
    isLogLevelLoggable(level) {
        return level >= LOG_LEVEL;
    }
    trace(provider) {
        this.log(lazy_logger_interface_1.LEVEL.TRACE, provider);
    }
    debug(provider) {
        this.log(lazy_logger_interface_1.LEVEL.DEBUG, provider);
    }
    info(provider) {
        this.log(lazy_logger_interface_1.LEVEL.INFO, provider);
    }
    warn(provider) {
        this.log(lazy_logger_interface_1.LEVEL.WARN, provider);
    }
    error(provider) {
        this.log(lazy_logger_interface_1.LEVEL.ERROR, provider);
    }
    severe(provider) {
        this.log(lazy_logger_interface_1.LEVEL.SEVERE, provider);
    }
    log(level, provider = (level) => []) {
        if (this.isLogLevelLoggable(level) !== true) {
            return;
        }
        console.log(...provider(level));
    }
}
exports.LOGGER = new LazyLogger();