/**
 * Vocabulary Coverage Analysis
 *
 * Analyzes how well an AAC board set covers core vocabulary
 * and identifies missing/extra words compared to reference lists.
 */
import { MetricsResult } from './types';
import { type ReferenceDataProvider } from '../reference/index';
export interface VocabularyAnalysis {
    core_coverage: {
        [listId: string]: {
            name: string;
            total_words: number;
            covered: number;
            missing: number;
            coverage_percent: number;
            missing_words: string[];
            average_effort: number;
        };
    };
    total_unique_words: number;
    words_with_effort: number;
    words_requiring_spelling: number;
    extra_words: string[];
    high_effort_words: Array<{
        word: string;
        effort: number;
    }>;
    low_effort_words: Array<{
        word: string;
        effort: number;
    }>;
}
export declare class VocabularyAnalyzer {
    private referenceLoader;
    constructor(referenceLoader?: ReferenceDataProvider);
    /**
     * Analyze vocabulary coverage against core lists
     */
    analyze(metrics: MetricsResult, options?: {
        locale?: string;
        highEffortThreshold?: number;
        lowEffortThreshold?: number;
    }): Promise<VocabularyAnalysis>;
    /**
     * Analyze coverage for a single core list
     */
    private analyzeCoreList;
    /**
     * Calculate coverage percentage for a specific word list
     */
    calculateCoverage(wordList: string[], metrics: MetricsResult): {
        covered: string[];
        missing: string[];
        coverage_percent: number;
    };
    /**
     * Get effort for a word, or calculate spelling effort if missing
     */
    getWordEffort(word: string, metrics: MetricsResult): number;
    /**
     * Check if a word is in the board set
     *
     * Checks both direct button labels and smart grammar word forms
     * (morphological inflections stored as predictions).
     */
    hasWord(word: string, metrics: MetricsResult): boolean;
}