import { type NabiNode, type NabiDoc } from '../schema/index.js';
import type { EditEnv } from '../doc/index.js';
import type { Selection } from '../caret/index.js';
import type { CommandArgs, CommandOutcome } from './commands.js';
export interface Snapshot {
    readonly doc: NabiDoc;
    readonly selection: Selection;
}
export interface CommandResultSnapshot {
    readonly doc: readonly NabiNode[];
    readonly selection: Selection;
    readonly arm?: CommandOutcome['arm'];
}
export declare function snapshotSelection(value: unknown): Selection | null;
export declare function frozenSelection(selection: Selection): Selection;
export declare function snapshotArgs(value: unknown): CommandArgs | null;
type SetLike<T> = {
    readonly size: number;
    has(value: T): boolean;
    keys(): Iterator<T>;
};
export declare class ReadonlySetView<T> implements ReadonlySet<T> {
    #private;
    constructor(values: ReadonlySet<T>);
    get size(): number;
    has(value: T): boolean;
    entries(): SetIterator<[T, T]>;
    keys(): SetIterator<T>;
    values(): SetIterator<T>;
    [Symbol.iterator](): SetIterator<T>;
    forEach(callbackfn: (value: T, value2: T, set: ReadonlySet<T>) => void, thisArg?: unknown): void;
    union<U>(other: SetLike<U>): Set<T | U>;
    intersection<U>(other: SetLike<U>): Set<T & U>;
    difference<U>(other: SetLike<U>): Set<T>;
    symmetricDifference<U>(other: SetLike<U>): Set<T | U>;
    isSubsetOf(other: SetLike<unknown>): boolean;
    isSupersetOf(other: SetLike<unknown>): boolean;
    isDisjointFrom(other: SetLike<unknown>): boolean;
}
export declare class ReadonlyMapView<K, V> implements ReadonlyMap<K, V> {
    #private;
    constructor(values: ReadonlyMap<K, V>);
    get size(): number;
    get(key: K): V | undefined;
    has(key: K): boolean;
    entries(): MapIterator<[K, V]>;
    keys(): MapIterator<K>;
    values(): MapIterator<V>;
    [Symbol.iterator](): MapIterator<[K, V]>;
    forEach(callbackfn: (value: V, key: K, map: ReadonlyMap<K, V>) => void, thisArg?: unknown): void;
}
export declare function callbackEnv(env: EditEnv): EditEnv;
export declare function snapshotCommandResult(value: unknown, current: NabiDoc, known: Readonly<WeakMap<object, NabiNode>>): CommandResultSnapshot | null;
export declare function callbackSelection(selection: Selection): Selection;
export declare function makeSessionId(): string;
export {};
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