TypeError: winston_cloudwatch_1.default is not a constructor

[jucksearm]

use code in typescript
import * as winston from 'winston'
import WinstonCloudWatch from 'winston-cloudwatch'
export default winston.add(new WinstonCloudWatch({}))

after run tsc
TypeError: winston_cloudwatch_1.default is not a constructor
at Object. (D:\node-project\ais-cdg-gateway\build\utils\logger.js:5:31)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:22:18)

[parque-docs]

Fixed in this way:

import { createLogger, format } from 'winston';
import * as WinstonCloudWatch from 'winston-cloudwatch';

export const log = createLogger({
    level: 'debug',
    format: format.json(),
    transports: [
        new WinstonCloudWatch({
            level: 'error',
            logGroupName: 'groupName',
            logStreamName: 'errors',
            awsRegion: 'eu-west-3'
        }),
    ]
});

[perbergland]

Hmmm do you really get that to compile? For me that results in Cannot use 'new' with an expression whose type lacks a call or construct signature. for the new WinstonCloudWatch call. The typescript definition for the main class seems pretty broken, sadly.

[perbergland]

This compiles but crashes because the typescript export doesn’t match the actual export:

   transports.push(new WinstonCloudWatch.default(cwOptions));

[FrederikPriede]

I am having the same issue.

[skam22]

for anyone else having this problem I found that this fixed it fro me:

instead of

import * as WinstonCloudWatch from 'winston-cloudwatch'

use require

const WinstonCloudWatch = require('winston-cloudwatch')

[dwilt]

In an ES6 node project and @parque-docs's solution is what only worked for me. Any reason why the docs shouldn't be updated?

[sb-pramod92]

Hi @lazywithclass , still I am facing this error.

(node:17287) UnhandledPromiseRejectionWarning: TypeError: winston_cloudwatch_1.default is not a constructor

tsconfig.json

main.ts

package.json

Please let me know if anything I am missing.

Thanks
Pramod Tolani

[lazywithclass]

@dwilt No, other than that's an error :D, I've just updated it. Thanks.

[tom10271]

I am still getting WinstonCloudWatch is not a constructor with import * as WinstonCloudWatch from 'winston-cloudwatch';

Solved by calling new WinstonCloudWatch.default but not new WinstonCloudWatch