export declare const BEGIN_MARKER = "<!-- BEGIN KIOKUKO MANAGED BLOCK -->";
export declare const END_MARKER = "<!-- END KIOKUKO MANAGED BLOCK -->";
type ManagedBlockState = 'absent' | 'balanced';
export interface ManagedBlockResult {
    content: string;
    action: 'created' | 'updated' | 'unchanged';
    state: ManagedBlockState;
}
export interface ManagedBlockRemovalResult {
    content: string | undefined;
    action: 'absent' | 'updated' | 'deleted';
}
export declare function upsertManagedBlock(existing: string, managedBlock: string): ManagedBlockResult;
/**
 * Remove only the exact marked region. Bytes outside the markers are owned by
 * the user and are never normalized or trimmed. A file is deletable only when
 * the managed block occupied the entire file.
 */
export declare function removeManagedBlock(existing: string): ManagedBlockRemovalResult;
/** Return the canonical template declaration from one validated managed block. */
export declare function readManagedBlockTemplateVersion(existing: string): number | undefined;
export {};
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