u/trace/log/pretty_json_console.ts


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import { ANSI, LogLevel, ILogger } from './index.js';

export class PrettyJsonConsoleLogger implements ILogger {
    public log(level: LogLevel, ...trace: string[]) {
        const message = JSON.stringify(
            {
                level,
                trace,
            },
            null,
            4,
        );
        const styled = `${this.getStyle(level)}${message}${ANSI.RESET}\n`;
        this.getStream(level)(styled);
    }

    private getStream(level: LogLevel) {
        if (level === LogLevel.ERROR) {
            return console.error;
        }
        return console.log;
    }

    private getStyle(level: LogLevel) {
        switch (level) {
            case LogLevel.UNKNOWN:
            case LogLevel.INFO:
                return `${ANSI.MAGENTA}`;
            case LogLevel.DEBUG:
                return `${ANSI.CYAN}`;
            case LogLevel.WARN:
                return `${ANSI.BRIGHT_YELLOW}`;
            case LogLevel.ERROR:
                return `${ANSI.BRIGHT_RED}`;
            case LogLevel.SYS:
                return `${ANSI.DIM}${ANSI.BLUE}`;
        }
    }
}