@tsed/logger/lib/esm/common/appenders/class/BaseAppender.js

A multi channel logger written in TypeScript.

import { Layouts } from "../../layouts/class/Layouts.js";
/**
 * ## BaseAppender
 *
 * `@tsed/logger` can load appenders from outside the core appenders. The type config value is used as a require path if no matching appender can be found. For example, the following configuration will create an appender with decorators:
 *
 * ```typescript
 * // consoleAppender.ts
 * import {Appender, BaseAppender, LogEvent} from "@tsed/logger";
 * const consoleLog = console.log.bind(console);
 *
 * @ Appender({name: "console2"})
 * export class ConsoleAppender extends BaseAppender {
 *   write(loggingEvent: LogEvent) {
 *       consoleLog(this.layout(loggingEvent, this.config.timezoneOffset));
 *   }
 * }
 * ```
 *
 * This appender can be use like this:
 *
 * ```typescript
 * import {Logger} from "@tsed/logger";
 * import "./consoleAppender.ts"
 *
 * const logger = new Logger("loggerName");
 *
 * logger.appenders
 *   .set("console-log", {
 *       type: "console2", level: ["debug", "info", "trace"]
 *   });
 * ```
 *
 */
export class BaseAppender {
    #layout;
    constructor(config) {
        this.config = config;
        this.configure(config);
    }
    get appenderOptions() {
        return this.__proto__.constructor.$appenderOptions;
    }
    configure(config) {
        Object.assign(this.config, config);
        this.#layout = Layouts.get(this.appenderOptions?.defaultLayout || "colored", this.config);
        if (this.config.layout) {
            this.#layout = Layouts.get(this.config.layout.type, this.config.layout);
        }
        return this;
    }
    /**
     *
     * @param args
     */
    layout(...args) {
        return this.#layout.transform(...args);
    }
}
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