Cannot import paths outside of an aliased directory

[ashubham]

Describe the bug

Suppose I have an aliased directory with index file:

// alias-dir/index.ts

import { msg } from '../import-from-parent';

export const msg2 = msg + ' from Alias';

I have defined alias as:

alias: {
    '/@alias/': path.resolve(__dirname, './src/alias-dir/')
}

The runtime fails with:
GET http://localhost:3001/import-from-parent net::ERR_ABORTED 404 (Not Found)

This is because aliased dirs are put on the root level while serving, hence breaking their relationship chain.

Reproduction

https://github.com/ashubham/vite-bug-1

System Info

• required vite version: 0.20.7
• required Operating System: OSX
• required Node version: 12.16.0