This directory contains TypeScript types and utilities shared between the frontend and backend.

Defines the structure for PDF tool operations:

• type: Operation identifier
• name: Display name
• description: Tool description
• icon: Emoji icon

Manages file upload state:

• files: Array of selected files
• isUploading: Upload status
• error: Error message if any

PDF metadata structure:

• pageCount: Number of pages
• title, author, subject: PDF metadata
• creationDate, modificationDate: Timestamps
• isEncrypted: Encryption status
• fileSize: File size in bytes

Type definitions for tool-specific options:

• SplitOptions: Page selection modes
• RotateOptions: Rotation angle and pages
• ProtectOptions: Password and permissions
• ConversionOptions: Image format and quality

Standard response format:

• success: Operation success status
• message: Status or error message
• downloadUrl: File download URL
• filename: Suggested filename
• info: PDF information (for info operations)

These types ensure type safety across the frontend and backend, providing a consistent interface for PDF operations and data structures.