typescript can't resolve non-relative path in import

Question

I have project structure like this

|--src
     |--app.component
                    |--index.ts
     |--home.component
                    |--index.ts
|--tsconfig.json
|--webpack.config.js

And I'm trying to do stuff below in app.component-index.ts

import { HomeComponent } from 'components/home.component'

Typescript couldn't find this module and throws

error TS2307: Cannot find module 'home.component'

Typescript docs say next:

A non-relative import to moduleB such as import { b } from "moduleB", in a source file /root/src/folder/A.ts, would result in attempting the following locations for locating "moduleB":

/root/src/folder/moduleB.ts
/root/src/moduleB.ts
/root/moduleB.ts
/moduleB.ts 

So for my case I expect it would be like

/src/components/app.component/components/home.component
/src/components/components/home.component
/src/components/home.component

Thanks in advance. P.S. In my webpack.config I've setted root.resolve to src and everything bundles correct. Typescript-loader prints errors to terminal but everything is bundled and works correctly

Answer 1

So I can guess at the "why" portion of this but I'm relatively new to TypeScript. I have gotten this to work though so I'll try explaining based on that solution as best I can.

What you expect based on the TypeScript Docs would be mostly correct if:

'components/home.component'

were treated as a 'Non-relative import'. I'm fairly certain (based on the solution that worked for me) that TypeScript treats it as an absolute path from the 'compilerOptions.baseUrl' field in your tsconfig.json.

What worked for me was to set it like so:

{
  "compilerOptions": {
    "baseUrl": ".",

    // Other options
  }
}

Which essentially tells TypeScript to try and find something like

'components/home.component'

by looking in the same directory as the tsconfig.json file for a directory called 'components' and then to look for a file/directory within it called 'home.component'.

So if your structure looks like:

|--src
   |--app.component
       |--index.ts
   |--home.component
       |--index.ts
|--tsconfig.json
|--webpack.config.js

And you set baseUrl to "." you would probably need to format your import like

import { HomeComponent } from 'src/home.component'