import type { DiagramDTO, MemoModelDTO } from '../types/index.js';
export interface ViewWriteResult {
    success: boolean;
    /** Why the view could not be declared. Never a reason to write it elsewhere. */
    reason?: string;
    filePath?: string;
    identifier?: string;
    /** True when the declaration seeded a new file. */
    created?: boolean;
}
/**
 * Write one view declaration into the project's own home for views of its kind.
 *
 * Returns `{ success: false, reason }` when the project declares no view at all,
 * which is the only case with no convention to infer. There is deliberately no
 * sidecar fallback: a view that cannot be declared is not created.
 */
/**
 * The view's `selectionQuery`, when it was created from one.
 *
 * A view declared from a matrix is defined by what it SELECTS — the kinds on
 * its axes and the relations drawn between them — not by the ids that happened
 * to match when it was saved. Writing the query means the view answers the
 * same question a year later against a model that has grown; writing the ids
 * would freeze the answer and quietly stop being true.
 */
export declare function selectionQueryLines(diagram: DiagramDTO): string[];
export declare function writeViewDeclaration(projectRoot: string, model: MemoModelDTO, diagram: DiagramDTO): Promise<ViewWriteResult>;
/**
 * Change WHAT a declared view shows, by editing its `expose` members.
 *
 * `diagram:update` carries the element ids a view should contain. A declared
 * view holds no list of ids — it holds `expose` paths, and
 * `resolveViewElementIds` derives the ids from them. So the update is applied
 * where the view actually says what it shows.
 *
 * Exposing the PACKAGE rather than each element is the convention every
 * authored view follows, and it is what makes a screen layout pick up a region
 * added later without another edit.
 */
export declare function updateViewExpose(projectRoot: string, model: MemoModelDTO, diagram: DiagramDTO, elementIds: string[] | undefined): Promise<ViewWriteResult & {
    exposed?: string[];
}>;
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