import { AstNode } from './lib/AstNode';
export declare function isIdentifierStart(code: any): boolean;
export declare function isIdentifierChar(code: any): boolean;
export declare function isNumberCharCode(code: any): boolean;
export declare function isNumberStart(code: any): boolean;
export declare function isOperator(word: string): boolean;
export declare function isHexCharCode(code: number): boolean;
export declare function getPriority(tokenOrLiteratureStatement: any): any;
export declare function getLast(arr: Array<any>): any;
export declare function assertUnexpect(parent: AstNode, child: AstNode, getUnexpectMsg?: (child: AstNode) => string | null): boolean;
export declare function assertExpectNullStatement(parent: AstNode, child: AstNode, expect: string): boolean;