@shopana/ga/dist/domain/TransactionRegistry.js

Type-safe Google Analytics 4 (GA4) tracking library for React and Next.js with ecommerce support, event batching, and SSR compatibility

const DEFAULT_TTL_MS = 24 * 60 * 60 * 1000;
export class TransactionRegistry {
    constructor(ttlMs = DEFAULT_TTL_MS) {
        this.transactions = new Map();
        this.isCleared = false;
        this.ttlMs = ttlMs;
        this.scheduleCleanup();
    }
    has(transactionId) {
        const timestamp = this.transactions.get(transactionId);
        if (!timestamp) {
            return false;
        }
        if (Date.now() - timestamp > this.ttlMs) {
            this.transactions.delete(transactionId);
            return false;
        }
        return true;
    }
    add(transactionId) {
        this.transactions.set(transactionId, Date.now());
    }
    clear() {
        this.isCleared = true;
        this.transactions.clear();
        if (this.cleanupTimer) {
            clearTimeout(this.cleanupTimer);
            this.cleanupTimer = undefined;
        }
    }
    guard(transactionId, warn = console.warn) {
        if (this.has(transactionId)) {
            warn(`[GA] duplicate transaction detected: ${transactionId}`);
        }
        else {
            this.add(transactionId);
        }
    }
    scheduleCleanup() {
        if (this.isCleared) {
            return;
        }
        const timer = setTimeout(() => {
            if (!this.isCleared) {
                this.cleanup();
                this.scheduleCleanup();
            }
        }, 60 * 60 * 1000);
        this.cleanupTimer = timer;
        if (this.isCleared) {
            clearTimeout(timer);
            this.cleanupTimer = undefined;
        }
    }
    cleanup() {
        const now = Date.now();
        for (const [id, timestamp] of this.transactions.entries()) {
            if (now - timestamp > this.ttlMs) {
                this.transactions.delete(id);
            }
        }
    }
}
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