import CalculateItems from 'calculate-items';

const exp = '1000+(8999+222+8222)+2*8000+98000+50%'
const result = CalculateItems.getResult(exp);
const isValid = CalculateItems.isValidExpression(exp);
console.log('isValid = ', isValid);
console.log('expInstance.expression = ', exp);
console.log('expInstance.getSummary() = ', result);