import type { SandboxMachine } from "../escalation/sandbox.js";
/**
 * The in-memory box filesystem every fake sandbox serves `files` from — one
 * implementation of the seam's three operations (sandbox.ts), so no two fakes
 * can drift into disagreeing about what reading a file means.
 *
 * `guard` is the fake's own lifecycle check. It runs for write and list and
 * NOT for read: a read stays available after stop/destroy on purpose, so the
 * fakes double as a post-mortem probe for tests asserting what a torn-down
 * machine held. Every other operation is lifecycle-guarded like a real
 * provider.
 */
export declare const inMemoryBoxFiles: (contents: Map<string, Uint8Array>, guard?: (operation: string) => void) => SandboxMachine["files"];
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