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Rule Change: prevent new-cap from flagging the caller because of third-party modules

See original GitHub issue

What rule do you want to change?


What change to do you want to make?

Generate fewer warnings

How do you think the change should be implemented?

A new default behavior

Example code

import { Deserialize } from 'cerialize';

// ...
const someObj = Deserialize(someJson, SomeType);

What does the rule currently do for this code?

Currently new-cap flags the code because Deserialize() is not camelCased, despite it being a third party module.

What will the rule do after it’s changed?

One of the followings:

  1. Check the naming rule at the point of definition (callee), rather than at the point of invocation (caller).
  2. Ignore ESM imported function calls from being checked.


  • I am willing to submit a pull request to implement this change.

Additional comments

See #15722 for the previous Q&A.

Issue Analytics

  • State:closed
  • Created a year ago
  • Reactions:2
  • Comments:10 (10 by maintainers)

github_iconTop GitHub Comments

mdjermanoviccommented, Apr 23, 2022

I’d be a new option, as it’s also likely to be incorrect usage. e.g.

import { Foo } from "foo";

var foo = Foo(); // should be new Foo();

making it the default will ignore these errors?

I think this rule is intended to enforce naming conventions, not to catch errors (though, it can catch errors).

nzakascommented, May 5, 2022

Fair enough. Given that we don’t agree that this is a bug, we can close this.

@nedsociety it looks like you have some options to work around this limitation already.

Read more comments on GitHub >

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