node-rfc SAP example

const rfc = require('node-rfc');

module.exports = async (query, skip, count, cb) => {
    try {
        
        const abapSystem = {
            user: process.env['SAP_USER'],
            passwd: process.env['SAP_PASSWD'],
            ashost: process.env['SAP_ASHOST'],
            sysnr: process.env['SAP_SYSNR'],
            client: process.env['SAP_CLIENT']
        };
        console.log(abapSystem);
        
        const client = new rfc.Client(abapSystem);
            
        await client.connect(async (err)=>{
            
            if (err) {
                throw err;
            }
        
            let params = {
                QUERY_TABLE: query
            };
        
            if(skip){
                params.ROWSKIPS = parseInt(skip);
            }
        
            if(count){
                params.ROWCOUNT = parseInt(count);
            }
        
            await client.invoke('RFC_READ_TABLE', params, (err, res) => {
                if (err) {
                    throw err;
                }
                // console.log('Result RFC_READ_TABLE:', res);
                cb(res.FIELD, res.DATA);
            });	
        });
    } catch (error) {
        return console.error('Error invoking RFC_READ_TABLE:', error);
    }
}