export interface KV {
get<T = unknown>(k: string): Promise<T | null>;
set<T = unknown>(k: string, v: T, ttlSec?: number): Promise<void>;
del(k: string): Promise<void>;
}
type Entry = { value: unknown; expiresAt?: number };
export class MemoryKV implements KV {
private store = new Map<string, Entry>();
async get<T = unknown>(k: string): Promise<T | null> {
const entry = this.store.get(k);
if (!entry) {
return null;
}
if (typeof entry.expiresAt === "number" && entry.expiresAt <= Date.now()) {
this.store.delete(k);
return null;
}
return entry.value as T;
}
async set<T = unknown>(k: string, v: T, ttlSec?: number): Promise<void> {
const expiresAt = typeof ttlSec === "number" ? Date.now() + ttlSec * 1000 : undefined;
this.store.set(k, { value: v, expiresAt });
}
async del(k: string): Promise<void> {
this.store.delete(k);
}
}
export function makeMemoryKV(): KV {
return new MemoryKV();
}
