codinget
fee254e7e6
- Backend: Koa + @koa/router serving the HIBP-style /range/:prefix k-anonymity API, backed by Postgres via pg, with migrate/seed scripts run through tsx. - Frontend: React + wouter, bundled with webpack (dev server + prod build), thin client that hashes passwords locally and only sends the hash prefix. - Import package: CLI to bulk-load a wordlist or hash list into the database, plus a separate script to pull the full dataset from the HIBP range API. Both support parallelism (worker threads for wordlist hashing, concurrency limiter for DB/HTTP fan-out). - Dev tooling: docker compose for a local Postgres, .env.local/.env.example, DATABASE_URL support as an alternative to discrete PG* vars.
24 lines
569 B
TypeScript
24 lines
569 B
TypeScript
// Bounds how many async tasks run at once. Used both for fanning out
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// concurrent DB upserts and concurrent HTTP requests.
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export function createLimiter(concurrency: number) {
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let active = 0;
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const queue: Array<() => void> = [];
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function release() {
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active--;
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queue.shift()?.();
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}
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return async function limit<T>(fn: () => Promise<T>): Promise<T> {
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if (active >= concurrency) {
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await new Promise<void>((resolve) => queue.push(resolve));
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}
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active++;
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try {
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return await fn();
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} finally {
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release();
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}
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};
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}
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