/**
 * @angular-modernizer/plugin-angular - Lifecycle Hook Rule
 *
 * Detects improper usage of Angular lifecycle hooks and missing cleanup patterns.
 *
 * Detection Patterns:
 * - ngOnInit with async operations without proper error handling
 * - ngOnDestroy not unsubscribing from all subscriptions
 * - Missing ngOnDestroy when subscriptions exist
 * - Improper order of lifecycle hook calls
 * - ngAfterViewInit/ngAfterContentInit without corresponding ngOnDestroy cleanup
 *
 * This rule helps ensure proper lifecycle management and prevent memory leaks.
 */
import type { AnalysisRule, AnalysisContext, AnalysisResult } from '@angular-modernizer/plugin-system';
/**
 * Lifecycle Hook Rule - detects improper lifecycle hook usage and missing cleanup.
 */
export declare class LifecycleHookRule implements AnalysisRule {
    readonly id = "angular:lifecycle-hook-violation";
    readonly name = "Lifecycle Hook Violation";
    readonly description = "Detects improper usage of Angular lifecycle hooks and missing cleanup patterns";
    readonly severity = "warning";
    readonly category = "angular-lifecycle";
    readonly tags: string[];
    analyze(context: AnalysisContext): Promise<AnalysisResult[]>;
    private analyzeClass;
    /**
     * Detects ngOnInit methods making ≥5 service calls — a strong signal that
     * Route Resolvers or lazy observable initialization should be used instead.
     * ≥5 → warning, ≥8 → severity escalated to error in metadata.
     */
    private analyzeNgOnInitComplexity;
    private isAngularComponentOrDirective;
    private getLifecycleHooks;
    private hasSubscriptions;
    private analyzeNgOnDestroyCleanup;
    private analyzeAsyncOperations;
}
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