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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | 18x 18x 18x 30x 30x 12x 12x | import { BaseLogger } from './base-logger.ts';
import type { LogLevel } from './definition.ts';
import type { EmitterFormat } from './emitter.ts';
import { emitLine } from './emitter.ts';
/**
* A logger that emits log messages to standard output (console.log). By default the lines are emitted with colors.
*
* @example
*
* ```ts
* // Create a console logger
* const logger = new ConsoleLogger();
*
* // Log messages at different levels
* logger.d`Detailed debugging information`;
*
* // Using template literals with embedded values
* const userId = 'user123';
* logger.i`User ${userId} logged in successfully`;
*
* // Including additional context with args()
* const error = new Error('Connection timeout');
* logger.args(error).e`Database operation failed: ${error}`;
*
* // Using with level filtering - only errors and above
* const productionLogger = new ConsoleLogger('error');
* productionLogger.i`This won't be logged`;
* productionLogger.e`This will be logged to stderr`;
* ```
*/
export class ConsoleLogger extends BaseLogger {
private readonly format: EmitterFormat;
/**
* Creates a new ConsoleLogger instance.
*
* @param level - The log level to use (default: 'info')
* @param format - The format of the emitted lines (default: 'colorful')
*/
public constructor(level?: LogLevel, format: EmitterFormat = 'colorful') {
super(level);
this.format = format;
}
protected override emitLine(level: LogLevel, message: string, args: readonly unknown[]): void {
const line = emitLine(level, message, undefined, this.format);
// eslint-disable-next-line no-undef, no-console
console.log(line, ...args);
}
}
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