import * as ts from "typescript";
export declare function isAny(type: ts.Type): boolean;
export declare function isUnion(type: ts.Type): boolean;
export declare function isArray(node: ts.Node, typeChecker: ts.TypeChecker): boolean;
export declare function isNullType(type: ts.Type): boolean;
export declare function isUndefinedType(type: ts.Type): boolean;
export declare function isVoidType(type: ts.Type): boolean;
export declare const ARRAY_MUTATING_CALLS: string[];