reactjs / reactjs/react-docgen

Missing support for `Pick<>` and `Omit<>`

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#925 3 comments 10 reactions 0 assignees View on GitHub

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typescript
Dominant language
TypeScript
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Description

Whenever an interface is using the typescript features Pick or Omit, then we don't get any props from these interfaces/types.

In the case of an interface like this:

import { type LinkProps } from "next/link";

interface MyComponentProps
  extends Pick<LinkProps, "prefetch" | "replace" | "scroll" | "shallow"> {
  children?: React.ReactNode;
}

export const MyComponent: FunctionComponent<MyComponentProps> = () => {
  return <>My Component</>;
};

-> in this case it will only find "children" as prop.

import { type LinkProps } from "next/link";

interface MyComponentProps
  extends Pick<LinkProps, "prefetch" | "replace" | "scroll" | "shallow"> {
  children?: React.ReactNode;
}

export const MyComponent: FunctionComponent<MyComponentProps> = () => {
  return <>My Component</>;
};

The same with Omit<>:

import { type LinkProps } from "next/link";

interface MyComponentProps
  extends Omit<LinkProps, "prefetch" | "replace" | "scroll" | "shallow"> {
  children?: React.ReactNode;
}

export const MyComponent: FunctionComponent<MyComponentProps> = () => {
  return <>My Component</>;
};

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  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 by reproducing the reported TypeScript examples using Pick and Omit, checking the extracted props for each interface. The work is done when props inherited through both utility types are included alongside explicitly declared props.

Written by the indexing model from the issue text.

Assessment

Tech stack
next.js, react, typescript
Domain
developer-experience, devtools
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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