uuidlisted

# UUID - Universally Unique Identifiers Trigger patterns: "UUID", "unique ID", "identifier", "v4", "v7", "uuidv4", "uuidv7" ## Overview UUID library for generating RFC9562-compliant unique identifiers in JavaScript/TypeScript applications. **Package**: uuid@13.0.0 **Standard**: RFC9562 (formerly RFC4122) ## Core Functions ### 1. v4() - Random UUID (Most Common) Generates a version 4 UUID using cryptographically secure random values. ```typescript import { v4 as uuidv4 } from 'uuid'; // Generate random UUID const taskId = uuidv4(); // '9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d' // Use in entity creation interface Task { id: string; title: string; createdAt: Date; } function createTask(title: string): Task { return { id: uuidv4(), title, createdAt: new Date() }; } ``` **When to use**: - Entity IDs (tasks, users, blueprints) - Session IDs - Request tracking IDs - File upload IDs - Any unique identifier needs ### 2. v7() - Timestamp-based UUID (Sortable) Generates a version 7 UUID with Unix epoch timestamp for natural chronological sorting. ```typescript import { v7 as uuidv7 } from 'uuid'; // Generate timestamp-based UUID const orderId = uuidv7(); // '019a26ab-9a66-71a9-a89e-63c35fce4a5a' // Multiple UUIDs are naturally sortable const ids = Array.from({ length: 5 }, () => uuidv7()); // All IDs will be in chronological order // Use for database primary keys interface Order { id: string; // v7 UUID - sortable by creation time customerId: st