import assert from 'assert' ; import { AstBuilderException } from '../src/Errors' ; describe ( 'Errors' , ( ) => { it ( 'AstBuilderException is an instance of AstBuilderException' , ( ) => { const error = AstBuilderException . create ( 'hello' , { line : 1 , column : 2 } ) ; assert ( error instanceof AstBuilderException ) ; } ) ; } ) ;