`esModuleInterop: true` with class static method

[bluelovers]

Bug Report

🔎 Search Terms

class static import

🕗 Version & Regression Information

• This is a crash
• This changed between versions ______ and _______
• This is the behavior in every version I tried, and I reviewed the FAQ for entries about _________
• I was unable to test this on prior versions because _______

⏯ Playground Link

https://www.typescriptlang.org/play?module=1#code/JYWwDg9gTgLgBAYQJIBEA0cDedgGdkpwC+cAZlBCHAOQDGwAJrtQNwCwAUJwKYAeksMgFcAdrRjAIIuGACGMABYAVCAkYAKegwBccXDCjARAczgAfRKgCUu-YZOdMnAJDBScdQQB0eApsZWVi5OHM7OUNwwQlDSWl4wEADKBkbG6kGhRJwuEVExcHERYAA2srTc6gD0AHoAOpXAYADaIqQAurj1lRjU1BlZXBx8AvCkouKS0nKKKmoMAEz+OnopJuaWKDYr9saOLm4evqhLgcEu4ZHRsYzxSatpGc4DOZf5hdwlZRU19Y0t7Z1Kt0aH1OM8ONNlKoNL0MpDZoxFrDOEA

💻 Code

import CID, { isCID } from 'cids';

export function pathToCid(cid: string | CID): string
{
	if (CID.isCID(cid))
	{
		return cid.toString()
	}

	return cid.replace(/^\/ip[nf]s\//, '')
}

export function pathToCid2(cid: string | CID): string
{
	if (isCID(cid))
	{
		return cid.toString()
	}

	return cid.replace(/^\/ip[nf]s\//, '')
}

pathToCid('')
pathToCid2('')

🙁 Actual behavior

TypeError: (0 , cids_1.isCID) is not a function

🙂 Expected behavior

• no error on output js file
• or show typescript error for warn this

[rbuckton]

Normally I would say this should be considered an error as a native ES module wouldn't normally provide the entire module as the default export. However, that's exactly what NodeJS does for its built-ins like fs when you use import in a native module.

It is odd that the following works:

import CID from 'cids'; // passes through __importDefault
import { isCID } from 'cids'; // directly accesses module object

while the combined version doesn't:

import CID, { isCID } from 'cids'; // passes through __importStar, doesn't adjust for default import

@andrewbranch, @weswigham: Any thoughts on this? I'm leaning towards trying to make it work under --esModuleInterop rather than reporting an error, given that the individual declarations work in this mode.