TypeScript Advanced
Generics with Constraints
interface HasId {
id: string;
}
function findById<T extends HasId>(items: T[], id: string): T | undefined {
return items.find(item => item.id === id);
}
function groupBy<T, K extends string | number>(
items: T[],
keyFn: (item: T) => K
): Record<K, T[]> {
return items.reduce((acc, item) => {
const key = keyFn(item);
(acc[key] ??= []).push(item);
return acc;
}, {} as Record<K, T[]>);
}
type ApiResponse<T>
[Description truncada. Veja o README completo no GitHub.]
