import type { HostSettings } from "../../host/host.js";
import { type CheckpointEdit, type StopAt } from "../../runtime/state/checkpointPatch/index.js";
import type { Checkpoint } from "../../runtime/state/checkpointStore.js";
/** The checkpoint as it will be once `edits` are applied, with the line
 *  for each, or the refusals. The driver runs this when an edit is
 *  queued, for the refusal; each UI runs it to draw the preview. Pure,
 *  so the two agree. */
export declare function previewOf(checkpoint: Checkpoint, edits: CheckpointEdit[], settings: HostSettings, at?: StopAt): {
    checkpoint: Checkpoint;
    applied: string[];
} | {
    refused: string[];
};