import type { ProgramNode } from '../ast/nodes.js';
export type DiffChange = {
    kind: 'block-added';
    name: string;
} | {
    kind: 'block-removed';
    name: string;
} | {
    kind: 'block-changed';
    name: string;
    fields: FieldChange[];
} | {
    kind: 'dashboard-added';
    title: string;
} | {
    kind: 'dashboard-removed';
    title: string;
} | {
    kind: 'dashboard-changed';
    title: string;
    fields: FieldChange[];
} | {
    kind: 'workbook-added';
    title: string;
} | {
    kind: 'workbook-removed';
    title: string;
} | {
    kind: 'workbook-changed';
    title: string;
    fields: FieldChange[];
} | {
    kind: 'cell-added';
    id: string;
    cellType: string;
    name?: string;
} | {
    kind: 'cell-removed';
    id: string;
    cellType: string;
    name?: string;
} | {
    kind: 'cell-changed';
    id: string;
    name?: string;
    fields: FieldChange[];
} | {
    kind: 'notebook-changed';
    fields: FieldChange[];
};
export interface FieldChange {
    path: string;
    before: string | null;
    after: string | null;
}
export interface DiffReport {
    changes: DiffChange[];
    /** True when `before` and `after` are semantically identical at the AST level. */
    identical: boolean;
}
export declare function diffDQL(beforeSource: string, afterSource: string): DiffReport;
export declare function diffNotebook(beforeSource: string | null, afterSource: string | null): DiffReport;
export declare function diffProgram(before: ProgramNode, after: ProgramNode): DiffReport;
export declare function renderDiffText(report: DiffReport): string;
//# sourceMappingURL=diff.d.ts.map