It is possible in Node.js v14, but you need to use the import operator, rather than the import declaration.

$ node

Welcome to Node.js v14.4.0.
Type ".help" for more information.
> let myModule;
undefined
> import("./my-module.js").then(module => { myModule = module });
Promise { <pending> }
> myModule.foo();
"bar"

As indicated in another response you need to call the import function:

$ node
Welcome to Node.js v16.6.0.
Type ".help" for more information.
> const {myFunction} = await import('./src/myFunction.js')
> myFunction(...)

I understand this works since Node.js 13 but I can only confirm it works in Node.js v16.6.0

You cannot use static import statements (e.g. import someModule from "some-module"), at the moment. I'm not aware of any efforts/tickets/pull requests/intents to change that.

You can use import() syntax to load modules! This returns a promise. So for example you can create a variable someModule, start importing, & after done importing, set someModule to that module:

let someModule
import("some-module")
  .then( loaded=> someModule= loaded)

Or you can directly use the import in your promise handler:

import("some-module").then(someModule => someModule.default())

For more complex examples, you might want to use an async Immediately Invoked Function Expression, so you can use await syntax:

(async function(){
    // since we are in an async function we can use 'await' here:
    let someModule = await import("some-module")
    console.log(someModule.default())
})()

last, if you start Node.JS with the --experimental-repl-await flag, you can use async directly from the repl & drop the async immediately invoked function:

let someModule = await import("some-module")

// because you have already 'await'ed
// you may immediately use someModule,
// whereas previously was not "loaded"
console.log(someModule.default())