import { type FilterOptions, type TextSegment } from './filter.js';
/**
 * Base class for an Angular pipe. Extend it and add `@Pipe()` in your app.
 *
 * Pure pipes re-run whenever an argument changes by reference, and an options
 * object literal in a template is a fresh reference on every change-detection
 * cycle — so the last result is cached by value to keep that cheap.
 */
export declare class ProfanitySegmentsPipeBase {
    private lastText;
    private lastKey;
    private lastResult;
    transform(text: string, options?: FilterOptions): TextSegment[];
}
/**
 * Base class for a `boolean` pipe — handy for `*ngIf` guards and form
 * validation. Extend it and add `@Pipe({ name: 'isProfane' })`.
 */
export declare class IsProfanePipeBase {
    private readonly segments;
    transform(text: string, options?: FilterOptions): boolean;
}
/**
 * Plain service class — no `@Injectable()`, so provide it explicitly:
 *
 * ```ts
 * providers: [
 *   { provide: ProfanityFilter, useFactory: () => new ProfanityFilter({ languages: ['en', 'de'] }) },
 * ]
 * ```
 */
export declare class ProfanityFilter {
    private readonly defaults;
    constructor(defaults?: FilterOptions);
    segments(text: string, options?: FilterOptions): TextSegment[];
    isProfane(text: string, options?: FilterOptions): boolean;
    /** Replaces every flagged segment with `mask` repeated to the same length. */
    mask(text: string, mask?: string, options?: FilterOptions): string;
}
export { filterFWordsToSegments } from './filter.js';
export type { FilterOptions, TextSegment } from './filter.js';
export type { Language } from './registry.js';
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