import type { Scope } from '../types/index.js';
/**
 * Scope helper functions for lazy prototype-chain based scope management.
 *
 * Instead of _.clone(scope) which copies O(n) properties each time,
 * we use Object.create(scope) which creates a child scope in O(1) time
 * that inherits from the parent via the prototype chain.
 */
/**
 * Create a child scope that inherits from the parent.
 * Uses Object.create() for O(1) creation instead of cloning.
 */
export declare function createChildScope(parent: Scope, additions?: Record<string, unknown>): Scope;
/**
 * Convert a prototype-chain scope to a plain object.
 * Uses for...in to walk the entire prototype chain.
 */
export declare function scopeToObject(scope: Scope): Record<string, unknown>;
/**
 * Iterate over all properties in a scope, including inherited ones.
 */
export declare function forEachInScope(scope: Scope, callback: (value: unknown, key: string) => void): void;
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