export function filterByThreshold<T>(items: T[], getScore: (item: T) => number, threshold: number): T[] {
return items.filter(item => getScore(item) >= threshold);
}
export function filterByAllowedValues<T, V extends string>(
items: T[],
getValue: (item: T) => V,
allowed?: readonly V[]
): T[] {
if (!allowed || allowed.length === 0) return items;
const set = new Set(allowed);
return items.filter(item => set.has(getValue(item)));
}
export function excludeById<T>(items: T[], getId: (item: T) => string, excludeIds?: readonly string[]): T[] {
const list = (excludeIds ?? []).filter(Boolean);
if (list.length === 0) return items;
const set = new Set(list);
return items.filter(item => !set.has(getId(item)));
}
export function limitToMax<T>(items: T[], max: number): T[] {
return items.slice(0, Math.max(0, max));
}
