倫岡
const OPERATOR = 'OPERATOR';
const LEFT_PARENTHESIS = 'LEFT_PARENTHESIS';
const RIGHT_PARENTHESIS = 'RIGHT_PARENTHESIS';
const Operations = {
'+': {
priority: 1,
doOperation: (a, b) => a + b
},
'-': {
priority: 1,
doOperation: (a, b) => a - b
},
'*': {
priority: 2,
doOperation: (a, b) => a * b
},
'/': {
priority: 2,
doOperation: (a, b) => a / b
}
}) Или Operations не относится к константам ?