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log.ts
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log.ts
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import { dim, green, red, yellow } from "./deps.ts";
export type LevelName = "debug" | "info" | "warn" | "error" | "fatal";
export enum Level {
Debug = 0,
Info = 1,
Warn = 2,
Error = 3,
Fatal = 4,
}
export class Logger {
#level: Level = Level.Info;
get level(): Level {
return this.#level;
}
setLevel(level: LevelName): void {
switch (level) {
case "debug":
this.#level = Level.Debug;
break;
case "info":
this.#level = Level.Info;
break;
case "warn":
this.#level = Level.Warn;
break;
case "error":
this.#level = Level.Error;
break;
case "fatal":
this.#level = Level.Fatal;
break;
}
}
debug(...args: unknown[]): void {
if (this.#level <= Level.Debug) {
console.debug(dim("DEBUG"), ...args);
}
}
info(...args: unknown[]): void {
if (this.#level <= Level.Info) {
console.log(green("INFO"), ...args);
}
}
warn(...args: unknown[]): void {
if (this.#level <= Level.Warn) {
console.warn(yellow("WARN"), ...args);
}
}
error(...args: unknown[]): void {
if (this.#level <= Level.Error) {
console.error(red("ERROR"), ...args);
}
}
fatal(...args: unknown[]): void {
if (this.#level <= Level.Fatal) {
console.error(red("FATAL"), ...args);
Deno.exit(1);
}
}
}
export default new Logger();