import { type REnvironmentInformation } from './environment';
/**
 * Add a new local environment scope to the stack, returns the modified variant (shares the original stack, no deep-clone).
 * @see {@link popLocalEnvironment} - to remove the local scope again
 */
export declare function pushLocalEnvironment({ level, current }: REnvironmentInformation): REnvironmentInformation;
/**
 * Remove the top local environment scope from the stack, returns the modified variant (shares the original stack, no deep-clone).
 * @see {@link pushLocalEnvironment} - to add a local scope
 */
export declare function popLocalEnvironment({ current, level }: REnvironmentInformation): REnvironmentInformation;
/**
 * Pads whichever of `base`/`next` is shallower with empty local scopes until both are at the same lexical {@link REnvironmentInformation#level|level}.
 */
export declare function padToCommonScope(base: REnvironmentInformation, next: REnvironmentInformation): {
    base: REnvironmentInformation;
    next: REnvironmentInformation;
};