import { type TSESTree } from "@typescript-eslint/types";
export declare function isDirectNullishInit(init: TSESTree.Expression | TSESTree.Node): boolean;
export declare function hasUndefined(types: TSESTree.TypeNode[]): boolean;
export declare function hasNull(types: TSESTree.TypeNode[]): boolean;
export declare function isNullOrUndefinedAnalysis(node?: TSESTree.Expression | TSESTree.Node): boolean;
export declare function isNull(value: unknown): boolean;
