import type { Policy } from '../base.ts';
import type { Deny, VfsContext } from '../types.ts';
/** The configured mode and session grants bound every mutation. An op
 * outside every mount carries an empty prefix and is governed by `/`, the
 * turf a profile's root mode is written under. */
export declare class MountModePolicy implements Policy {
    preVfs(ctx: VfsContext): Deny | null;
}
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