@himorishige/noren-core/dist/pool.js

Core PII detection, masking, and tokenization library built on Web Standards

// Optimized hit pool with minimal overhead
export class HitPool {
    pool = [];
    maxSize = 20; // Smaller pool for better performance
    clearCounter = 0;
    acquire(type, start, end, value, risk, priority) {
        const hit = this.pool.pop();
        if (hit) {
            // Reuse existing object
            hit.type = type;
            hit.start = start;
            hit.end = end;
            hit.value = value;
            hit.risk = risk;
            hit.priority = priority;
            return hit;
        }
        // Create new object if pool is empty
        return { type, start, end, value, risk, priority };
    }
    releaseOne(hit) {
        this.release([hit]);
    }
    release(hits) {
        // Return hits to pool for reuse
        for (const hit of hits) {
            if (this.pool.length < this.maxSize) {
                // Simple cleanup - let JS GC handle the rest
                hit.value = '';
                hit.priority = undefined;
                hit.confidence = undefined;
                hit.reasons = undefined;
                hit.features = undefined;
                this.pool.push(hit);
            }
        }
        // Periodic cleanup every 100 releases
        if (++this.clearCounter >= 100) {
            this.pool.length = 0;
            this.clearCounter = 0;
        }
    }
    releaseRange(hits, count) {
        const toRelease = hits.slice(0, Math.min(count, hits.length));
        this.release(toRelease);
    }
    clear() {
        this.pool.length = 0;
        this.clearCounter = 0;
    }
}
export const hitPool = new HitPool();