41 lines
1.1 KiB
TypeScript
41 lines
1.1 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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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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log(logLevel: LogLevel, message: string): void {
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if (logLevel >= this.minimumLogLevel) {
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console.log(`${LogLevel[logLevel]}: ${message}`);
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}
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}
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}
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export namespace LoggerFactory {
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export function 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 ((<ILogger>logging).log) {
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return <ILogger>logging;
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}
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return new ConsoleLogger(<LogLevel>logging);
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}
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} |