/**
 * @angular-modernizer/plugin-angular - Async Pipe Misuse Rule
 *
 * Detects incorrect usage of Angular's async pipe in inline templates.
 *
 * Detection Patterns:
 * - `double-async-subscription`: Observable property used with `| async` in
 *   the template AND manually subscribed via `.subscribe()` in a lifecycle
 *   hook — creates two subscriptions, one of which leaks.
 * - `multiple-async-subscriptions`: The same observable property appears with
 *   `| async` two or more times in the same inline template — each occurrence
 *   creates an independent subscription; use `*ngIf="obs$ | async as val"` or
 *   `shareReplay(1)` instead.
 *
 * Only analyses inline `template:` strings — external `templateUrl:` files are
 * not parsed (no file system access at analysis time).
 */
import type { AnalysisRule, AnalysisContext, AnalysisResult } from '@angular-modernizer/plugin-system';
/**
 * Async Pipe Misuse Rule.
 *
 * Rule ID: `angular:async-pipe-misuse`
 */
export declare class AsyncPipeMisuseRule implements AnalysisRule {
    readonly id = "angular:async-pipe-misuse";
    readonly name = "Async Pipe Misuse";
    readonly description = "Detects incorrect usage of Angular's async pipe in inline templates";
    readonly severity: "warning";
    readonly category = "angular-performance";
    readonly tags: string[];
    analyze(context: AnalysisContext): Promise<AnalysisResult[]>;
    private analyzeClass;
    /**
     * Returns the @Component decorator or null if this is not a component class.
     */
    private getComponentDecorator;
    /**
     * Extracts the value of the `template:` property from a @Component decorator.
     * Returns null when the template is external (templateUrl) or absent.
     */
    private extractInlineTemplate;
    /**
     * Scans an inline template string for `propName | async` occurrences.
     * Returns a map from property name → occurrence count.
     */
    private countAsyncPipeUsages;
    /**
     * Returns true if any lifecycle hook method body contains
     * `this.<propName>.subscribe(`.
     */
    private hasManualSubscribeInLifecycleHook;
    /**
     * Extracts the `templateUrl:` string value from a @Component decorator.
     * Returns null when the property is absent or not a simple string literal.
     */
    private extractTemplateUrl;
    /**
     * Reads the external template file referenced by `templateUrl:`.
     * Resolves the URL relative to the source file's directory using posix
     * semantics (Angular always uses forward-slash paths).
     * Returns null when the file cannot be read (missing, permission error, etc.).
     */
    private readTemplateFile;
    /**
     * Converts an observable property name like `user$` → `user` for use in
     * suggested fix messages.
     */
    private toCamelCase;
}
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