/**
 * Transliteration mappings.
 */
export declare const BASE_MAPPING: Map<string, string>;
/** Letter map for transliteration schema. */
export declare class Mapping {
    protected map: Map<string, string>;
    constructor(mapping: Map<string, string>);
    valueOf(): Map<string, string>;
    /**
     * Return mapped value for `key` if key is in the map, else `defaultValue`.
     */
    get(key: string, defaultValue?: string): string | undefined;
}
/** Mapping for individual letters. */
export declare class LetterMapping extends Mapping {
    constructor(mapping: Map<string, string>);
}
/** Mapping for letters with respect to previous sibling. */
export declare class PrevMapping extends Mapping {
    constructor(mapping: Map<string, string>);
}
/** Mapping for letters with respect to next sibling. */
export declare class NextMapping extends Mapping {
    constructor(mapping: Map<string, string>);
}
/** Mapping for word endings. */
export declare class EndingMapping extends Mapping {
    constructor(mapping: Map<string, string>);
}