Error: Type instantiation is excessively deep and possibly infinite. #54943
Description
Bug Report
🔎 Search Terms
error TS2589: Type instantiation is excessively deep and possibly infinite.
🕗 Version & Regression Information
- This is a crash
- This changed between versions 4.9 and 5.1.6
- This is the behavior in every version I tried, and I reviewed the FAQ for entries about _________
- I was unable to test this on prior versions because _______
⏯ Playground Link
Playground link with relevant code
💻 Code
export type DefineObjPath<T, T1 extends any[] = unknown[]> = {
[P in keyof T]: Required<T>[P] extends object
? DefineObjPath<Required<T>[P], T1[number] extends string ? [...T1, P] : [P]>
: P | [...T1, P];
}[keyof T];
export interface TableProps<T = any> {
dataSource?: T[];
columns?: { dataIndex?: DefineObjPath<T> }[];
}
export function func<T = any>(props: TableProps<T>) {
return props;
}
export const demo = func({ dataSource: [{ a: { b: 'c' } }], columns: [{ dataIndex: ['a', 'b'] }] });
// check type
export type checkType = DefineObjPath<{ a: { b: string } }>;
🙁 Actual behavior
