work.suroh.tk/node_modules/constantinople/lib/binaryOperation.d.ts

export declare type Operator = '+' | '-' | '/' | '%' | '*' | '**' | '&' | '|' | '>>' | '>>>' | '<<' | '^' | '==' | '===' | '!=' | '!==' | 'in' | 'instanceof' | '>' | '<' | '>=' | '<=';
export default function binaryOperation(operator: Operator, left: any, right: any): any;