import { GlossaristModel } from '../models/base.js';
declare const HUNK_EQUAL = "equal";
declare const HUNK_ADDED = "added";
declare const HUNK_REMOVED = "removed";
export type TextHunkType = typeof HUNK_EQUAL | typeof HUNK_ADDED | typeof HUNK_REMOVED;
export interface TextHunkJson {
    type: TextHunkType;
    text: string;
}
export declare class TextHunk extends GlossaristModel {
    readonly type: TextHunkType;
    readonly text: string;
    constructor(data?: TextHunkJson);
    toJSON(): TextHunkJson;
    static fromJSON(data: TextHunkJson): TextHunk;
}
export interface TextDiffJson {
    oldText?: string;
    old_text?: string;
    newText?: string;
    new_text?: string;
    hunks?: ReadonlyArray<TextHunkJson | TextHunk>;
}
export declare class TextDiff extends GlossaristModel {
    readonly oldText: string;
    readonly newText: string;
    private readonly _hunks;
    constructor(data?: TextDiffJson);
    get hunks(): ReadonlyArray<TextHunk>;
    get hasChanges(): boolean;
    get addedText(): string;
    get removedText(): string;
    toJSON(): TextDiffJson & {
        old_text: string;
        new_text: string;
        hunks: ReadonlyArray<TextHunkJson>;
    };
    static fromJSON(data: TextDiffJson): TextDiff;
}
export declare function diffText(oldText: string | null | undefined, newText: string | null | undefined): TextDiff;
export {};
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