Type resolution in linked packages

[simonfox]

This is essentially a duplicate issue however there has been no response on the existing issues which have been incorrectly closed so I am opening again.

Related issues:
#29221
#29808

Merged PR which hasn't resolved the issue:
#31571

Problem occurs when using yarn link for development purposes.
Window 10 Pro v1903
Typescript 3.5.3
yarn 1.17.3

I've created a repro and described steps over on #29808 but basic steps are below

If you clone https://github.com/simonfox/repro-plugin-one and https://github.com/simonfox/repro-plugin-two and run yarn for both. Then run yarn link in plugin two root, and then link one to the local two with yarn link plugin-two from one. Then you will see the issue in src/features/feature-one/actions.ts (you may need to reload the VS Code window after linking).

This results in error TS2742: The inferred type of 'actions' cannot be named without a reference to 'drive-common/node_modules/typescript-fsa'. This is likely not portable. A type annotation is necessary.

UPDATE Should explicitly mention that this is in typings generation. With "declaration": false this error does not occur.

[weswigham]

If I'm not mistaken, this is incredibly annoying from our perspective, because as far as TS knows, you've loaded two copies of typescript-fsa into the compilation - one in plugin-one's modules, and one in plugin-two's, and we're typechecking by loading both, as is appropriate for each use site. If a type at a position comes from the one which if not your immediate dep, you then get an error like this.

Now, I thought we already had some fancy logic that unified dependencies that were exactly the same version (and maybe we are) - it's possible that logic is missing a bit of code to propegate its gleaned knowledge of the project paths into the specifier generation process.

[simonfox]

@weswigham sorry can you clarify the following

If a type at a position comes from the one which if not your immediate dep, you then get an error like this

Here I am getting the error from a src file that is part of plugin-one that imports typescript-fsa directly with no reference to anything from plugin-two....which is different to the case you are describing?

This was not an issue in 3.1.x - we started to experience on anything from 3.2.x on. Maybe something with the unification logic got broken in there? Where might I find that logic if I wanted to have a look myself?

[weswigham]

Somewhere in moduleNameResolver.ts we end up merging things with similar package ids (identically versioned packages found in different locations), I believe causing us to "forget" some of the paths the module could be found at by the time we're trying to generate a specifier in moduleSpecifiers.ts.

[antl3x]

@simonfox can you try to compile adding in tsconfig.json:

"incremental": true

After that, try to build. You should get the error,.

Now, try to build again without remove the .tsbuildinfo file, and check if compiles correctly.

I think this info can help us to find the real issue.

For some reason, after have the .tsbuildinfo file, project compiles normally, but not in the first build.

PS: Version used to reproduce this was 3.5.3

[simonfox]

@nthypes I think that is just because you haven't made any changes between builds so the incremental build finds no work to do?

[antl3x]

@nthypes I think that is just because you haven't made any changes between builds so the incremental build finds no work to do?

Nope, because in the first try no dist folder is created, but in the second try the dist appears with transpiled files.

[simonfox]

@nthypes but this problem is in typings generation - you will get transpiled .js but there is no .d.ts for the files that caused errors (besides I get the transpiled js on the first run).

With "declaration": false you don't get the problem.

[yordis]

This is happening to me as well

The inferred type of 'print' cannot be named without a reference to '@straw-hat/cli-next/node_modules/chalk'. This is likely not portable. A type annotation is necessary.

// my print.ts file
import chalk from 'chalk';
const colors = {
  highlight: chalk.cyan,
  info: chalk.blue,
  debug: chalk.gray,
  warning: chalk.yellow,
  success: chalk.green,
  error: chalk.red,
  line: chalk.grey,
  muted: chalk.grey,
};

export const print = {
  colors,
};

// my cli.ts file
import { print } from '../print';

export class Toolbox {
  // it fails here
  public print = print;
}

I did yarn link if that matters.

I ended up disabling declaration to turn it off

[sheetalkamat]

@simonfox I am getting error trying to repro this when I try to install the dependencies:

c:\temp\repro-plugin-one>yarn
yarn install v1.17.3
[1/4] Resolving packages...
[2/4] Fetching packages...
error Command failed.
Exit code: 128
Command: git
Arguments: ls-remote --tags --heads git@github.com:simonfox/repro-plugin-two.git
Directory: c:\temp\repro-plugin-one
Output:
git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.