error using import statement in nodejs

Trying to use ES6 import statement in index.js instead of require(). I have also added "type":"modules" in package.json. Still getting error when i deploy but running locally works fine in node 19.7.0 . Here are logs after running function:- Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: /usr/code-start/src/index.js
require() of ES modules is not supported.
require() of /usr/code-start/src/index.js from /usr/local/src/server.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.
Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from /usr/code-start/package.json.

I'm not sure if you can change how you do the imports...you should be importing like the starter code.

This is because your code is added to the runtime code: https://github.com/open-runtimes/open-runtimes/blob/main/runtimes/node-16.0