reactjs / reactjs/react-docgen

Monorepo support is missing

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Dominant language
TypeScript
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Description

We are working in a huge monorepo setup with hundreds of packages. Now if an interface is imported from an "external" package - just another package that i'm currently scoped into - it won't pick up this file and parse it. This results in missing properties that basically would be delivered by this imported interface/type.

Could be fixed with a patch in the makeFsImporter.ts but i didn't made a pull request yet - i just tried it out very specifically for our own repository, but it would need further work to make a generic solution out of it:

function resolveImportedValue(
    path: ImportPath,
    name: string,
    file: FileState,
    seen = new Set<string>(),
  ): NodePath | null {
    // Bail if no filename was provided for the current source file.
    // Also never traverse into react itself.
    let source = path.node.source?.value;
    let { filename } = file.opts;

    // Customization: add support to resolve packages from blocks, segments, and libraries in iso monorepo
    if (
      (typeof filename === "string" && source?.startsWith("@blocks")) ||
      source?.startsWith("@segments") ||
      source?.startsWith("@libraries")
    ) {
      filename = `${getRepoRoot(filename as string)}/${source.replace("@", "")}/src/index.ts`;
      source = "./index";
    }
    // Customization: end

    if (!source || !filename || source === "react") {
      return null;
    }

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in makeFsImporter.ts, especially resolveImportedValue, and trace how imported interfaces and types are resolved for files in a monorepo. Generalize the reported package-resolution behavior beyond the @blocks, @segments, and @libraries example so external packages in scoped monorepos are parsed and their properties are included.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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