mirror of https://github.com/denoland/deno.git
64 lines
1.6 KiB
TypeScript
64 lines
1.6 KiB
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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import { LogLevel, getLevelByName, getLevelName } from "./levels.ts";
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import { BaseHandler } from "./handlers.ts";
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export interface LogRecord {
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msg: string;
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args: unknown[];
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datetime: Date;
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level: number;
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levelName: string;
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}
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export class Logger {
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level: number;
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levelName: string;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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handlers: any[];
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constructor(levelName: string, handlers?: BaseHandler[]) {
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this.level = getLevelByName(levelName);
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this.levelName = levelName;
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this.handlers = handlers || [];
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}
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_log(level: number, msg: string, ...args: unknown[]): void {
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if (this.level > level) return;
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// TODO: it'd be a good idea to make it immutable, so
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// no handler mangles it by mistake
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// TODO: iterpolate msg with values
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const record: LogRecord = {
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msg: msg,
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args: args,
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datetime: new Date(),
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level: level,
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levelName: getLevelName(level)
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};
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this.handlers.forEach((handler): void => {
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handler.handle(record);
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});
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}
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debug(msg: string, ...args: unknown[]): void {
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this._log(LogLevel.DEBUG, msg, ...args);
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}
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info(msg: string, ...args: unknown[]): void {
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this._log(LogLevel.INFO, msg, ...args);
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}
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warning(msg: string, ...args: unknown[]): void {
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this._log(LogLevel.WARNING, msg, ...args);
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}
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error(msg: string, ...args: unknown[]): void {
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this._log(LogLevel.ERROR, msg, ...args);
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}
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critical(msg: string, ...args: unknown[]): void {
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this._log(LogLevel.CRITICAL, msg, ...args);
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}
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}
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