smart-dropzone-react/dist/chunk-GUDLRPF5.cjs.map

🚀 A production-ready React dropzone component with smart defaults, drag & drop reordering, chunked uploads, resume functionality, and comprehensive provider support (Cloudinary, AWS S3, Supabase)

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interface PerformanceMetrics {\r\n  bundleSize: {\r\n    raw: number;\r\n    gzipped: number;\r\n    minified: number;\r\n  };\r\n  runtime: {\r\n    renderTime: number;\r\n    uploadSpeed: number;\r\n    memoryUsage: number;\r\n    cpuUsage: number;\r\n  };\r\n  userExperience: {\r\n    timeToInteractive: number;\r\n    firstUploadTime: number;\r\n    errorRate: number;\r\n    successRate: number;\r\n  };\r\n}\r\n\r\nexport class PerformanceMonitor {\r\n  private static instance: PerformanceMonitor;\r\n  private events: Array<{\r\n    type: \"render\" | \"upload\" | \"validation\" | \"error\" | \"success\";\r\n    timestamp: number;\r\n    duration?: number;\r\n    metadata?: Record<string, any>;\r\n  }> = [];\r\n  private startTime: number = performance.now();\r\n  private renderStartTime: number = 0;\r\n  private uploadStartTimes: Map<string, number> = new Map();\r\n\r\n  private constructor() {}\r\n\r\n  static getInstance(): PerformanceMonitor {\r\n    if (!PerformanceMonitor.instance) {\r\n      PerformanceMonitor.instance = new PerformanceMonitor();\r\n    }\r\n    return PerformanceMonitor.instance;\r\n  }\r\n\r\n  startRender(): void {\r\n    this.renderStartTime = performance.now();\r\n  }\r\n\r\n  endRender(): number {\r\n    const duration = performance.now() - this.renderStartTime;\r\n    this.events.push({\r\n      type: \"render\",\r\n      timestamp: Date.now(),\r\n      duration,\r\n    });\r\n    return duration;\r\n  }\r\n\r\n  startUpload(fileId: string): void {\r\n    this.uploadStartTimes.set(fileId, performance.now());\r\n  }\r\n\r\n  endUpload(fileId: string, success: boolean): number {\r\n    const startTime = this.uploadStartTimes.get(fileId);\r\n    if (!startTime) return 0;\r\n\r\n    const duration = performance.now() - startTime;\r\n    this.uploadStartTimes.delete(fileId);\r\n\r\n    this.events.push({\r\n      type: success ? \"success\" : \"error\",\r\n      timestamp: Date.now(),\r\n      duration,\r\n      metadata: { fileId, success },\r\n    });\r\n\r\n    return duration;\r\n  }\r\n\r\n  recordEvent(\r\n    type: \"render\" | \"upload\" | \"validation\" | \"error\" | \"success\",\r\n    metadata?: Record<string, any>\r\n  ): void {\r\n    this.events.push({\r\n      type,\r\n      timestamp: Date.now(),\r\n      metadata,\r\n    });\r\n  }\r\n\r\n  getMetrics(): PerformanceMetrics {\r\n    const renderEvents = this.events.filter((e) => e.type === \"render\");\r\n    const successEvents = this.events.filter((e) => e.type === \"success\");\r\n    const errorEvents = this.events.filter((e) => e.type === \"error\");\r\n\r\n    const avgRenderTime =\r\n      renderEvents.length > 0\r\n        ? renderEvents.reduce((sum, e) => sum + (e.duration || 0), 0) /\r\n          renderEvents.length\r\n        : 0;\r\n\r\n    const avgUploadTime =\r\n      successEvents.length > 0\r\n        ? successEvents.reduce((sum, e) => sum + (e.duration || 0), 0) /\r\n          successEvents.length\r\n        : 0;\r\n\r\n    const uploadSpeed = avgUploadTime > 0 ? 1000 / avgUploadTime : 0; // files per second\r\n    const errorRate =\r\n      this.events.length > 0 ? errorEvents.length / this.events.length : 0;\r\n    const successRate =\r\n      this.events.length > 0 ? successEvents.length / this.events.length : 0;\r\n\r\n    return {\r\n      bundleSize: {\r\n        raw: this.getBundleSize(),\r\n        gzipped: this.getBundleSize() * 0.3, // Approximate gzip ratio\r\n        minified: this.getBundleSize() * 0.7, // Approximate minification ratio\r\n      },\r\n      runtime: {\r\n        renderTime: avgRenderTime,\r\n        uploadSpeed,\r\n        memoryUsage: this.getMemoryUsage(),\r\n        cpuUsage: this.getCpuUsage(),\r\n      },\r\n      userExperience: {\r\n        timeToInteractive: this.getTimeToInteractive(),\r\n        firstUploadTime: this.getFirstUploadTime(),\r\n        errorRate,\r\n        successRate,\r\n      },\r\n    };\r\n  }\r\n\r\n  private getBundleSize(): number {\r\n    // This would be calculated during build time\r\n    // For now, return an estimated size based on typical React component\r\n    return 40 * 1024; // 40KB estimated\r\n  }\r\n\r\n  private getMemoryUsage(): number {\r\n    if (\"memory\" in performance) {\r\n      const memory = (performance as any).memory;\r\n      return memory.usedJSHeapSize / memory.jsHeapSizeLimit;\r\n    }\r\n    return 0;\r\n  }\r\n\r\n  private getCpuUsage(): number {\r\n    // CPU usage is difficult to measure in browsers\r\n    // This is a simplified approximation\r\n    return 0;\r\n  }\r\n\r\n  private getTimeToInteractive(): number {\r\n    const firstRender = this.events.find((e) => e.type === \"render\");\r\n    return firstRender ? firstRender.timestamp - this.startTime : 0;\r\n  }\r\n\r\n  private getFirstUploadTime(): number {\r\n    const firstUpload = this.events.find((e) => e.type === \"success\");\r\n    return firstUpload ? firstUpload.timestamp - this.startTime : 0;\r\n  }\r\n\r\n  reset(): void {\r\n    this.events = [];\r\n    this.startTime = performance.now();\r\n    this.uploadStartTimes.clear();\r\n  }\r\n\r\n  exportData(): Array<{\r\n    type: \"render\" | \"upload\" | \"validation\" | \"error\" | \"success\";\r\n    timestamp: number;\r\n    duration?: number;\r\n    metadata?: Record<string, any>;\r\n  }> {\r\n    return [...this.events];\r\n  }\r\n}\r\n\r\n// Performance optimization utilities\r\nexport class PerformanceOptimizer {\r\n  static debounce<T extends (...args: any[]) => any>(\r\n    func: T,\r\n    wait: number\r\n  ): (...args: Parameters<T>) => void {\r\n    let timeout: NodeJS.Timeout;\r\n    return (...args: Parameters<T>) => {\r\n      clearTimeout(timeout);\r\n      timeout = setTimeout(() => func(...args), wait);\r\n    };\r\n  }\r\n\r\n  static throttle<T extends (...args: any[]) => any>(\r\n    func: T,\r\n    limit: number\r\n  ): (...args: Parameters<T>) => void {\r\n    let inThrottle: boolean;\r\n    return (...args: Parameters<T>) => {\r\n      if (!inThrottle) {\r\n        func(...args);\r\n        inThrottle = true;\r\n        setTimeout(() => (inThrottle = false), limit);\r\n      }\r\n    };\r\n  }\r\n\r\n  static memoize<T extends (...args: any[]) => any>(\r\n    func: T,\r\n    keyGenerator?: (...args: Parameters<T>) => string\r\n  ): T {\r\n    const cache = new Map<string, ReturnType<T>>();\r\n\r\n    return ((...args: Parameters<T>) => {\r\n      const key = keyGenerator ? keyGenerator(...args) : JSON.stringify(args);\r\n\r\n      if (cache.has(key)) {\r\n        return cache.get(key);\r\n      }\r\n\r\n      const result = func(...args);\r\n      cache.set(key, result);\r\n      return result;\r\n    }) as T;\r\n  }\r\n\r\n  static async retry<T>(\r\n    operation: () => Promise<T>,\r\n    options: { maxAttempts?: number; delay?: number } = {}\r\n  ): Promise<T> {\r\n    const { maxAttempts = 3, delay = 1000 } = options;\r\n    let lastError: Error;\r\n\r\n    for (let i = 0; i < maxAttempts; i++) {\r\n      try {\r\n        return await operation();\r\n      } catch (error) {\r\n        lastError = error as Error;\r\n        if (i < maxAttempts - 1) {\r\n          await new Promise((resolve) =>\r\n            setTimeout(resolve, delay * Math.pow(2, i))\r\n          );\r\n        }\r\n      }\r\n    }\r\n\r\n    throw lastError!;\r\n  }\r\n}\r\n"]}