/**
 * Renderer-independent semantic text coordinates used by pane selection.
 *
 * Anchors point at stable domain block ids and UTF-16 source offsets rather
 * than viewport cells, so wrapping, resizing, and virtualized rows cannot
 * change what an existing selection means.
 */
export declare const SEMANTIC_BLOCK_SEPARATOR = "\n\n";
export interface SemanticBlock {
    readonly id: string;
    readonly text: string;
}
export interface SemanticDocument {
    readonly blocks: readonly SemanticBlock[];
}
export interface SemanticAnchor {
    readonly blockId: string;
    readonly offset: number;
}
export interface SemanticRange {
    readonly anchor: SemanticAnchor;
    readonly focus: SemanticAnchor;
}
export type SemanticMovement = "left" | "right" | "word-left" | "word-right" | "line-start" | "line-end" | "up" | "down";
export declare function normalizeSemanticDocument(document: SemanticDocument): SemanticDocument;
export declare function documentStart(document: SemanticDocument): SemanticAnchor | undefined;
export declare function documentEnd(document: SemanticDocument): SemanticAnchor | undefined;
export declare function clampSemanticAnchor(document: SemanticDocument, anchor: SemanticAnchor, missing?: "start" | "end"): SemanticAnchor | undefined;
export declare function compareSemanticAnchors(document: SemanticDocument, left: SemanticAnchor, right: SemanticAnchor): number;
export declare function semanticRangeText(document: SemanticDocument, range: SemanticRange): string;
export declare function moveSemanticAnchor(document: SemanticDocument, requested: SemanticAnchor, movement: SemanticMovement): SemanticAnchor | undefined;
/** SEL-005: double-click selects a whole URL/path as one unit, else a word. */
export declare function semanticWordRange(document: SemanticDocument, requested: SemanticAnchor): SemanticRange | undefined;
export declare function semanticLineRange(document: SemanticDocument, requested: SemanticAnchor): SemanticRange | undefined;