export type WorkspaceUndoIndex = {
    version: 1;
    entries: Record<string, WorkspaceMutation[]>;
};
export type WorkspaceMutation = WorkspacePatchMutation | WorkspaceWriteMutation;
export type WorkspacePatchMutation = {
    type: "patch";
    patch: string;
    toolName?: string;
};
export type WorkspaceWriteMutation = {
    type: "write";
    path: string;
    beforeContent?: string;
    afterContent: string;
    toolName?: string;
};
export type WorkspaceMutationPreparation = {
    type: "write";
    path: string;
    beforeContent?: string;
};
export type WorkspaceMutationFromToolInput = {
    cwd: string;
    toolName: string;
    args: unknown;
    details: unknown;
    isError: boolean;
    preparation?: WorkspaceMutationPreparation | undefined;
};
export type WorkspaceRevertResult = {
    ok: true;
    changedFiles: number;
    revertedChanges: number;
} | {
    ok: false;
    error: string;
};
export declare const WORKSPACE_MUTATION_ENTRY_TYPE = "pix-workspace-mutation";
export declare function workspaceUndoIndexKey(_sessionFile: string | undefined, _sessionId: string, entryId: string): string;
export declare function loadWorkspaceUndoIndex(agentDir: string): WorkspaceUndoIndex;
export declare function saveWorkspaceUndoIndex(agentDir: string, index: WorkspaceUndoIndex): void;
export declare function prepareWorkspaceMutation(cwd: string, toolName: string, args: unknown): WorkspaceMutationPreparation | undefined;
export declare function workspaceMutationFromToolExecution(input: WorkspaceMutationFromToolInput): WorkspaceMutation | undefined;
export declare function revertWorkspaceMutations(cwd: string, mutations: readonly WorkspaceMutation[]): Promise<WorkspaceRevertResult>;