"use strict"; const NotImplementedError = Error("NotImplementedError"); class Collapser { isInitTypeValid() { throw NotImplementedError; } isExpressionTypeValid() { throw NotImplementedError; } getExpressionChecker() { throw NotImplementedError; } extractAssignment() { throw NotImplementedError; } addSuccessfully() { throw NotImplementedError; } isSizeSmaller() { return true; } } module.exports = Collapser;