IntelliSense not working when esModuleInterop was `true` and swagger-parser was imported.

[JasonHK]

TypeScript Version: 4.1.0-dev.20200902

Search Terms: tsserver, IntelliSense, VSCode, esModuleInterop, swagger-parser

Code

tsconfig.json:

{
    "compilerOptions": {
        "target": "ES2015",
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "moduleResolution": "Node"
    }
}

index.ts:

import SwaggerParser from "swagger-parser";

Expected behaviour:

Suggestions should shown when I press the Tab key.

Actual behaviour:

No suggestions were shown.

Repository Link:

https://github.com/JasonHK-Reproductions/TypeScript-IntelliSense-not-working-when-esModuleInterop-was-true

Related Issues:

N/A

[RyanCavanaugh]

@elibarzilay I suspect there's a crash going on in the LS