@phroun/paged-buffer/lib/types/notifications.js

High-performance buffer system for editing massive files with intelligent memory management and undo/redo capabilities

"use strict";
/**
 * Notification types for buffer events
 * @enum {string}
 */
const NotificationType = {
    // File system events
    FILE_MODIFIED_ON_DISK: 'file_modified_on_disk',
    FILE_SIZE_CHANGED: 'file_size_changed',
    FILE_DELETED: 'file_deleted',
    // Save operations
    SAVE_SKIPPED: 'save_skipped',
    ATOMIC_SAVE_STARTED: 'atomic_save_started',
    SAVE_COMPLETED: 'save_completed',
    SAVE_METADATA_UPDATE_FAILED: 'save_metadata_update_failed',
    TEMP_CLEANUP: 'temp_cleanup',
    TEMP_CLEANUP_FAILED: 'temp_cleanup_failed',
    // Data integrity
    PARTIAL_DATA_DETECTED: 'partial_data_detected',
    EMERGENCY_MISSING_DATA: 'emergency_missing_data',
    // Page operations
    PAGE_SPLIT: 'page_split',
    PAGE_EVICTED: 'page_evicted',
    // Page conflicts
    PAGE_CONFLICT_DETECTED: 'page_conflict_detected',
    PAGE_REBASE_SUCCESS: 'page_rebase_success',
    PAGE_REBASE_FAILED: 'page_rebase_failed',
    // Buffer state changes
    BUFFER_DETACHED: 'buffer_detached',
    MEMORY_PRESSURE: 'memory_pressure',
    STORAGE_ERROR: 'storage_error',
    // Performance warnings
    LARGE_OPERATION: 'large_operation',
    SLOW_STORAGE: 'slow_storage',
    // Undo system events
    UNDO_TRANSACTION_STARTED: 'undo_transaction_started',
    UNDO_TRANSACTION_COMMITTED: 'undo_transaction_committed',
    UNDO_TRANSACTION_ROLLED_BACK: 'undo_transaction_rolled_back',
    UNDO_OPERATION_MERGED: 'undo_operation_merged',
    UNDO_OPERATION_RECORDED: 'undo_operation_recorded',
    UNDO_APPLIED: 'undo_applied',
    UNDO_FAILED: 'undo_failed',
    REDO_APPLIED: 'redo_applied',
    REDO_FAILED: 'redo_failed'
};
/**
 * Notification for buffer events
 * @class BufferNotification
 */
class BufferNotification {
    /**
     * Create a buffer notification
     * @param {string} type - Notification type from NotificationType enum
     * @param {string} severity - Severity level ('info', 'warning', 'error', 'critical')
     * @param {string} message - Human-readable message
     * @param {Object} [metadata={}] - Additional notification data
     */
    constructor(type, severity, message, metadata = {}) {
        this.type = type;
        this.severity = severity; // 'info', 'warning', 'error', 'critical'
        this.message = message;
        this.metadata = metadata;
        this.timestamp = new Date();
    }
}
module.exports = {
    NotificationType,
    BufferNotification
};
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