Typescript -摩根和logger.stream导致lint错误
Typescript -摩根和logger.stream导致lint错误
提问于 2018-06-13 21:07:11
我尝试使用记录器流功能将Morgan日志附加到Winston。但是，一旦我尝试在使用摩根中间件时附加logger.stream，它就失败了，并显示以下消息：
Argument of type '"combined"' is not assignable to parameter of type 'FormatFn'.
下面是我的Winston初始化代码：
import * as appRoot from 'app-root-path';
import * as winston from 'winston';
import { Logger } from 'winston';
import * as fs from 'fs';
import * as stream from 'stream';
const dirLogs = `${appRoot}/logs`;
// It's call during initialization, we can block the thread
if (!fs.existsSync(dirLogs)) {
fs.mkdirSync(dirLogs);
}
// define the custom settings for each transport (file, console)
const options = {
file: {
level: 'info',
filename: `${dirLogs}/app.log`,
handleExceptions: true,
json: true,
maxsize: 5242880, // 5MB
maxFiles: 5,
colorize: false,
},
console: {
level: 'debug',
handleExceptions: true,
json: false,
colorize: true,
},
};
// Keep it simple to focus on the need first
// I think Logger should send logs to a logger service
const logger = new Logger({
level: 'info',
transports: [
new winston.transports.File(options.file),
new winston.transports.Console(options.console),
],
exitOnError: false, // do not exit on handled exceptions
});
// If I don't use the stream.Duplex, it cause another lint error.
logger.stream = (options?: any) => new stream.Duplex({
write: function (message: string, encoding: any) {
logger.info(message.trim());
}
});
export default logger;然后是我尝试使用Morgan的代码。
// ... All import
import logger from './logger/index';
// ... Then later the code
this.expressApp.use(morgan('combined', { stream: logger.stream }));我不确定我为什么会得到这个错误:/
回答 2
Stack Overflow用户
发布于 2018-06-13 21:26:21
好的，所以我深入研究了代码和typescript文件，以了解它真正需要做的事情。
我将我的logger.stream声明从
// If I don't use the stream.Duplex, it cause another lint error.
logger.stream = (options?: any) => new stream.Duplex({
write: function (message: string, encoding: any) {
logger.info(message.trim());
}
});至
// Don't forget this import
import { Options } from 'morgan';
// And the code
export const morganOption: Options = {
stream: {
write: function (message: string) {
logger.info(message.trim());
},
},
};然后，我导入morganOptions并将其设置为morgan
// My import
import { logger, morganOption } from './logger/index';
// ... Then later, the new code
this.expressApp.use(morgan('combined', morganOption));希望它能帮助其他人:)
Stack Overflow用户
发布于 2019-02-21 04:19:47
使用node包管理器安装Winston node包
创建一个logger.ts，在其中添加以下代码
import { createLogger, format, transports } from 'winston';
const { label, combine, timestamp , prettyPrint } = format;
const logger = createLogger({
format: combine(
timestamp(),
prettyPrint(),
),
transports: [
new transports.Console(),
new transports.File({ filename: './error.log' , level: 'error' }),
new transports.File({ filename: './info.log' , level: 'info' }),
],
exitOnError: false,
});
export default loggerStep 在enter link description here下面的一行中可以看到更多信息
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原文链接：
https://stackoverflow.com/questions/50838074
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