Typescript: instanceof not working

[felangel]

index.ts

class HttpError extends Error {

}

console.log(new HttpError() instanceof HttpError);

transpiled with tsc index.ts
run with node index.js
output:

false

```sh
tsc -v 2.6.2

tsconfig.json
```json
{
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs",
        "declaration": true,
        "outDir": "./dist",
        "moduleResolution": "node",
        "noImplicitAny": true,
        "noUnusedLocals": true,
        "lib": ["es6", "dom"]
    }
}

expected output to be true

[ajafff]

https://github.com/Microsoft/TypeScript/wiki/FAQ#why-doesnt-extending-built-ins-like-error-array-and-map-work

[benedictchen]

This is truly awful...

[hasahmed]

@felangel You should reopen this. The workaround isn't a suitable fix.

[typescript-bot]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.

[MetaiR]

I have the same problem here and it gave me a headache when I tried this after working around 3 hours at midnight :

class MissingError extends Error {
   constructor() {
        super('Missing Data');
        Object.setPrototypeOf(this, MissingError.prototype);
   }
}
console.log(new MissingError() instanceof MissingError) // false

[benedictchen]

I also experienced this extremely annoying issue. Essentially the "fix"
was ensure that native classes are not transpiled. This means to only
support ES2015, ES6 and above :-/

On Sun, Apr 7, 2019 at 4:32 PM Seyed Ali Roshan [e-mail]
wrote:

I have the same problem here and it gave me a headache when I tried this
after working around 3 hours at midnight :

class MissingError extends Error {
constructor() {
super('Missing Data');
Object.setPrototypeOf(this, MissingDataError.prototype);
}
}
console.log(new MissingError() instanceof MissingError) // false

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[wengkhing]

I was having this issue as well, but managed to solve it by removing the lib option and use the following configuration. I'm using typescript 3.9.5

"compilerOptions": {
    "target": "ES2015",
    "module": "CommonJS"
  }