Snippet

Class-Based Pinia Store Decorator for Reactive Array Operation Auditing

Using object-oriented auditor classes to wrap and monitor Pinia store mutations provides a clean separation of concerns. The class tracks reactive array modifications and produces immutable audit log snapshots.

snippet.js

javascript

export class StoreAuditor {
  private logHistory = [];
 
  attach(store) {
    store.$subscribe((mutation, state) => {
      if (Array.isArray(state.items)) {
        this.logHistory.push({
          type: mutation.type,
          itemCount: state.items.length,
          timestamp: Date.now()
        });
      }
    });
  }
 
  getAuditLogs() {
    return Array.from(this.logHistory);
  }
}

vue

Breakdown

export class StoreAuditor

Encapsulates state logging logic within a reusable OOP service class.

store.$subscribe((mutation, state) => {

Registers a subscription listener on the Pinia store instance to intercept state mutations.

if (Array.isArray(state.items)) {

Guards the auditing execution by checking if the reactive state property is an Array.

return Array.from(this.logHistory);

Returns a shallow copy array of audit logs to prevent external mutation of private history.

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Class-Based Pinia Store Decorator for Reactive Array Operation Auditing

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