Domain: check: Type CircularityHelp WantedPossible Improvement
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- (48 455 stars)
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- (Merge moyen 6j 17h) (9 PRs mergées en 30 j)
Description
🔎 Search Terms
circular reference, generic, error TS2456, recursive
🕗 Version & Regression Information
- This is the behavior in every version I tried, and I reviewed the FAQ for entries about circular reference
⏯ Playground Link
💻 Code
type FooType = {
foo?: boolean;
};
type BaseElement<T> = FooType & {
children: CustomElement[];
type: T;
};
type CustomElement = BaseElement<'h1'>;
🙁 Actual behavior
When defining a recursive type structure using a generic type, TypeScript incorrectly reports a Type alias 'CustomElement' circularly references itself.(2456) error, even though the type should be resolvable.
It gets weird when you move type: T; line above the children: CustomElement[]; and the error disappears. Also removing FooType will resolve the issue.
🙂 Expected behavior
In the first place the code should not throw any errors, in the second place the behavior should not change by reordering records of a type.
Additional information about the issue
No response