/
Logger.ts
54 lines (42 loc) · 1.37 KB
/
Logger.ts
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import { LogLevel, type ILogger } from './ILogger';
export class Logger implements ILogger {
public level: LogLevel;
public constructor(level: LogLevel) {
this.level = level;
}
public has(level: LogLevel): boolean {
return level >= this.level;
}
public trace(...values: readonly unknown[]): void {
this.write(LogLevel.Trace, ...values);
}
public debug(...values: readonly unknown[]): void {
this.write(LogLevel.Debug, ...values);
}
public info(...values: readonly unknown[]): void {
this.write(LogLevel.Info, ...values);
}
public warn(...values: readonly unknown[]): void {
this.write(LogLevel.Warn, ...values);
}
public error(...values: readonly unknown[]): void {
this.write(LogLevel.Error, ...values);
}
public fatal(...values: readonly unknown[]): void {
this.write(LogLevel.Fatal, ...values);
}
public write(level: LogLevel, ...values: readonly unknown[]): void {
if (!this.has(level)) return;
const method = Logger.levels.get(level);
if (typeof method === 'string') console[method](`[${method.toUpperCase()}]`, ...values);
}
protected static readonly levels = new Map<LogLevel, LogMethods>([
[LogLevel.Trace, 'trace'],
[LogLevel.Debug, 'debug'],
[LogLevel.Info, 'info'],
[LogLevel.Warn, 'warn'],
[LogLevel.Error, 'error'],
[LogLevel.Fatal, 'error']
]);
}
export type LogMethods = 'trace' | 'debug' | 'info' | 'warn' | 'error';