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Code Issues Packages 1 Wiki Activity

Add colors to log module (denoland/deno_std#175)

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Original: d895c60a51
This commit is contained in:
Dmitry Sharshakov 2019-02-11 05:28:52 +03:00 committed by Ryan Dahl
parent 33f62789cd
commit 53784dce7c
1 changed files with 25 additions and 1 deletions
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26
log/handlers.ts
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@ -1,7 +1,8 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license. // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { open, File, Writer } from "deno"; import { open, File, Writer } from "deno";
import { getLevelByName } from "./levels.ts"; import { getLevelByName, LogLevel } from "./levels.ts";
import { LogRecord } from "./logger.ts"; import { LogRecord } from "./logger.ts";
import { red, yellow, blue, bold } from "../colors/mod.ts";
const DEFAULT_FORMATTER = "{levelName} {msg}"; const DEFAULT_FORMATTER = "{levelName} {msg}";
type FormatterFunction = (logRecord: LogRecord) => string; type FormatterFunction = (logRecord: LogRecord) => string;
@ -52,6 +53,29 @@ export class BaseHandler {
} }
export class ConsoleHandler extends BaseHandler { export class ConsoleHandler extends BaseHandler {
format(logRecord: LogRecord): string {
let msg = super.format(logRecord);
switch (logRecord.level) {
case LogLevel.INFO:
msg = blue(msg);
break;
case LogLevel.WARNING:
msg = yellow(msg);
break;
case LogLevel.ERROR:
msg = red(msg);
break;
case LogLevel.CRITICAL:
msg = bold(red(msg));
break;
default:
break;
}
return msg;
}
log(msg: string) { log(msg: string) {
console.log(msg); console.log(msg);
} }