How do you uncache a module in Node.js when using createRequire?

Given an ESM Node.js project (package.json contains "type":"module"), I want to require a file, then delete its cache, and require it again so that its source runs again.

I tried this:

mod.js

console.log('in mod.ts')

testcase.js

import { createRequire } from 'module'
const require = createRequire(import.meta.url)

require('./mod.js')

const key = Object.keys(require.cache)[0]
delete require.cache[key]

require('./mod.js')

There are ways to do this in a CJS project such as this answer, but I can’t figure out how to do it in an ESM project.

I expected to see the console log printed twice, but it only prints once.

Is there a way to successfully uncache a module and reload its body in this test case?