为什么这个程序不起作用？
我想连接到外部oracle数据库
在解决这个问题之前，我解决了oracledb location和oracle client的问题，两个路径是正确的，版本是正确的
赢7 x64

```const oracledb = require('oracledb');

  const mypw = 'DEMO12dscSEd3' 

    function getEmployee(prodid) {
     return new Promise(async function(resolve, reject) {
    let connection;

     try {
      connection = await oracledb.getConnection({
         user          : "DEMO",
        password      : "*****",  
         connectString : "(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=84.252.140.225)                    
     (PORT=49161))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=XE)))"
        });

VS code's Terminal :

* PS C:\NodeProgram\node-oracle> node index

TypeError: oracledb.getConnection is not a function
    *