import { GlobalsOptions } from './bundlib-options';
import { Nullable } from './helper-types';
export declare function isValidGlobals(value: unknown): value is GlobalsOptions;
export declare function normalizeGlobals(globals: GlobalsOptions): Record<string, string> | null;
export declare function normalizeBuildGlobals(build: Nullable<{
    globals?: GlobalsOptions;
}>, def: Record<string, string> | null): Record<string, string> | null;