reactjs / reactjs/react-docgen

With Typescript Omit Union types get lost

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#882 1 comment 2 reactions 0 assignees View on GitHub

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new feature typescript
Dominant language
TypeScript
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Description

Hello together,

with the following code the union type of name gets lost:

interface FullProps {
  /** The name to greet */
  name: "world" | "hello";
  title: string;
}

type Props = Omit<FullProps, "title">

/**
 * Hello world component
 */
const MyComponent = ({name = 'world'}: Props) => {
  return <div />;
}

I have similar problems with Extract and Pick.

Is it possible to support these typescript function?

Thanks in regards

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the TypeScript example in the issue and reproduce the behavior for Omit, then compare it with the similar Extract and Pick cases. Trace how react-docgen handles these utility types and verify that the union "world" | "hello" is preserved in the extracted component information.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
documentation
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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