import type { State } from "../compile.js";
/** The lock a mutating command holds for its duration. */
export type StateLease = {
    release: () => Promise<void>;
};
/**
 * Where a project's deploy state lives, behind one interface.
 *
 * Every method is async because the cloud implementation is: the local one
 * satisfies the same shape with synchronous file work, which keeps the commands
 * free of "is this the file or the workspace" branching.
 */
export type StateBackend = {
    /** What to name this backend in a message to the user. */
    describe: string;
    /** The deployed resource map, or undefined when nothing is deployed yet. */
    read: () => Promise<State | undefined>;
    write: (state: State) => Promise<void>;
    /** Record a rollback point. False when there was nothing to record. */
    snapshot: () => Promise<boolean>;
    /** Restore that rollback point. False when none was recorded. */
    restore: () => Promise<boolean>;
    acquireLock: (command: string, force?: boolean) => Promise<StateLease>;
};
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