80 lines
1.9 KiB
TypeScript
80 lines
1.9 KiB
TypeScript
import {Level, type Options, type Writer} from './types'
|
|
|
|
export const writers = new Map<string, Writer>()
|
|
export let options: Options = {
|
|
format: '[$time] $level $namespace :',
|
|
pad_level: true,
|
|
verbose: true
|
|
}
|
|
|
|
export class Logger {
|
|
constructor(private readonly _namespace: string) {}
|
|
|
|
public get namespace(): string {
|
|
return this._namespace
|
|
}
|
|
|
|
public extend(sub_namespace: string): Logger {
|
|
return new Logger(`${this.namespace}:${sub_namespace}`)
|
|
}
|
|
|
|
public debug(...data: any[]): void {
|
|
log(data, Level.DEBUG, this._namespace)
|
|
}
|
|
|
|
public trace(...data: any[]): void {
|
|
log(data, Level.TRACE, this._namespace)
|
|
}
|
|
|
|
public info(...data: any[]): void {
|
|
log(data, Level.INFO, this._namespace)
|
|
}
|
|
|
|
public warn(...data: any[]): void {
|
|
log(data, Level.WARNING, this._namespace)
|
|
}
|
|
|
|
public error(...data: any[]): void {
|
|
log(data, Level.ERROR, this._namespace)
|
|
}
|
|
}
|
|
|
|
function log(message: any[], level: Level, namespace: string): void {
|
|
if (writers.size === 0) {
|
|
if (options.verbose) console.log('No writer subscribed, discard message')
|
|
return
|
|
}
|
|
|
|
// Format header of log
|
|
const head = options.format.replace('$time', new Date().toISOString()).replace('$namespace', namespace)
|
|
|
|
let lvl = get_string(level)
|
|
if (!options.pad_level) lvl = lvl.trimEnd()
|
|
|
|
const head_bw = head.replace('$level', lvl)
|
|
|
|
for (const [name, writer] of writers.entries()) {
|
|
const options = writer.options
|
|
if (options?.minLevel > level) {
|
|
if (options.verbose) console.log(`Writer's level is lower, discard message for ${name}`)
|
|
continue
|
|
}
|
|
writer.log(level, head_bw, ...message)
|
|
}
|
|
}
|
|
|
|
function get_string(level: Level): string {
|
|
switch (level) {
|
|
case Level.DEBUG:
|
|
return 'DEBUG '
|
|
case Level.TRACE:
|
|
return 'TRACE '
|
|
case Level.INFO:
|
|
return 'INFO '
|
|
case Level.WARNING:
|
|
return 'WARNING'
|
|
case Level.ERROR:
|
|
return 'ERROR '
|
|
}
|
|
}
|