path imports of packages not supported

[eps1lon]

Repro: http://www.typescriptlang.org/play/#code/JYWwDg9gTgLgBAKjgQwM5wEoFNkGN4BmUEIcA5FDvmQNwBQokscA3gL5xEnmV4wC0AExIB6VFigA3CWQbho8FnThwRIuDAAWWOLhKQAdlgMx0ATwgBXOJfGC6HLqTIABEMhgTgyADb9LwCJ6lCIAKmaQAOZQyGCaZiLABoJYAB6ydASWBvjAEAZwACJYIBAAFACUrMqq6gCaVlC6ECkOQA

Currently imports such as react-dom/server or @material-ui/core/Typography are not supported. It seems like it tries to fetch them by appending .d.ts (which is only part of the usual resolution algorithm). But even by leveraging that knowledge and using e.g. import Typography from '@material-ui/core/Typography/index' (where import Typography from '@material-ui/core/Typography/index.d.ts' does exits) is not in a found module.

Technically it should consider import Typography from '@material-ui/core/Typography/index.d.ts' in import Typography from '@material-ui/core/Typography' as well. In a perfect world it would also check the types field in import Typography from '@material-ui/core/Typography/package.json'.

[orta]

This is still valid, the key is that the fallback of the path might need to resolve over to definitely types too

import * as React from 'react';
import {} from 'react-dom/server'

function Demo() {
  // Your code
}

Looks at: https://www.unpkg.com/react-dom@17.0.1/server.d.ts which would work if they bundled

But it also needs to look at: https://www.unpkg.com/@types/react@17.0.3/server.d.ts

[typescript-bot]

Hello! As per #2804, we are automatically closing all open issues. Please see #2804 for a description of what issues and PRs can be accepted going forward.