Vscode suggests wrong ts auto import path with js extension after having a json import

TypeScript Version: 3.1.6, but also tried with 3.3.0-dev.201xxxxx

Search Terms: auto import json wrong module path js extension issue bug

Code

https://stackblitz.com/edit/typescript-json-import-issue

I am not using any vscode extension for managing imports and as far as I know vscode depends on typescript to show the module import suggestions, so I hope this is the right place for this issue.

tsconfig.json

{
	"compilerOptions": {
		"module": "es2015",
		"moduleResolution": "node",
		"resolveJsonModule": true,
		"esModuleInterop": true
	}
}

Expected behavior:

When we have: import packageJson from './package.json'; in VSCode auto import modules autocomplete to suggest: import { testing } from './test';

Actual behavior:

in VSCode auto import modules autocomplete suggests: import { testing } from './test.js';

Playground Link:

Related Issues:

[cwhenderson20]

I am noticing this behavior as well, except the extension is incorrect (it’s appending .js instead of leaving it off or using the correct .ts)

VSCode version: 1.33.1 (1.33.1)

tsconfig.json:

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "baseUrl": ".",
    "checkJs": false,
    "esModuleInterop": true,
    "isolatedModules": true,
    "jsx": "react",
    "lib": ["es2017"],
    "moduleResolution": "node",
    "noEmit": true,
    "noImplicitAny": false,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "target": "esnext"
  }
}

[cscleison]

i can still reproduce this on 1.38.1