consterror:Error=newError()

/* eslint-disable @typescript-eslint/no-explicit-any */functiondecorateErrorClass<Textendsnew(...args:any[])=>Error>(errorConstructor:T){constdecoratedConstructor=errorConstructorasT&{additionalStaticProp:boolean;};decoratedConstructor.additionalStaticProp=true;return{MyError:decoratedConstructor};}const{ MyError}=decorateErrorClass(classMyErrorextendsError{panic(){console.log('panicking!');}});/** * Some commentary that should be exported. */exporttypeMyError=InstanceType<typeofMyError>;// AFAICT if we don't export the instance type of MyError (above), DX degrades for importersexport{MyError};// MyError (class) and myError (instance) are both correctly typed in this file.constmyError=newMyError();console.log(MyError.additionalStaticProp);// truemyError.panic();// outputs: "panicking!"

import{MyError}from'./index.js';exporttypeSomethingElse=boolean;export{MyError};

npx eslint                              /tmp/tmp.1UuL6fdCYx/src/1-broken/bad.ts  5:1  error  All exportsin the declaration are only used as types. Use`export type`  @typescript-eslint/consistent-type-exports✖ 1 problem (1 error, 0 warnings)  1 error and 0 warnings potentially fixable with the`--fix` option.

- const { MyError } = decorateErrorClass(+ export const { MyError } = decorateErrorClass(  class MyError extends Error {    panic() {      console.log('panicking!');    }  });/** * Some commentary that should be exported. */export type MyError = InstanceType<typeof MyError>;- export { MyError };