react_receipt_flow_basic/src/utils/api.util.ts

export const ApiUtil = {
    writeQuery: (query: any) => {
        let resultStr = ``;
        for(let key in query) {
            if(query[key] == "") {
               continue; 
            }
            resultStr += `${key}=${query[key]}&`
        }

        return resultStr.slice(0, resultStr.length - 1)
    }
}