55 lines
1.6 KiB
TypeScript
55 lines
1.6 KiB
TypeScript
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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import { ILogger, LogLevel } from "./ILogger";
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export class NullLogger implements ILogger {
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public log(logLevel: LogLevel, message: string): void {
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}
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}
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export class ConsoleLogger implements ILogger {
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private readonly minimumLogLevel: LogLevel;
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constructor(minimumLogLevel: LogLevel) {
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this.minimumLogLevel = minimumLogLevel;
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}
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public log(logLevel: LogLevel, message: string): void {
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if (logLevel >= this.minimumLogLevel) {
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switch (logLevel) {
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case LogLevel.Error:
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console.error(`${LogLevel[logLevel]}: ${message}`);
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break;
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case LogLevel.Warning:
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console.warn(`${LogLevel[logLevel]}: ${message}`);
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break;
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case LogLevel.Information:
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console.info(`${LogLevel[logLevel]}: ${message}`);
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break;
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default:
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console.log(`${LogLevel[logLevel]}: ${message}`);
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break;
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}
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}
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}
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}
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export class LoggerFactory {
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public static createLogger(logging?: ILogger | LogLevel) {
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if (logging === undefined) {
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return new ConsoleLogger(LogLevel.Information);
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}
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if (logging === null) {
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return new NullLogger();
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}
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if ((logging as ILogger).log) {
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return logging as ILogger;
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}
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return new ConsoleLogger(logging as LogLevel);
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}
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}
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