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log.ts
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log.ts
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import { blue, green, yellow, red } from 'https://deno.land/std@0.90.0/fmt/colors.ts'
export type LevelNames = '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
setLevel(level: LevelNames) {
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[]) {
if (this.#level <= Level.Debug) {
console.log(blue('DEBUG'), ...args)
}
}
info(...args: unknown[]) {
if (this.#level <= Level.Info) {
console.log(green('INFO'), ...args)
}
}
warn(...args: unknown[]) {
if (this.#level <= Level.Warn) {
console.log(yellow('WARN'), ...args)
}
}
error(...args: unknown[]) {
if (this.#level <= Level.Error) {
console.log(red('ERROR'), ...args)
}
}
fatal(...args: unknown[]) {
if (this.#level <= Level.Fatal) {
console.log(red('FATAL'), ...args)
Deno.exit(1)
}
}
}
export default new Logger()