Minimal code snippets to test stuff
To launch ts code from command line, this seems to be the way:
node --experimental-specifier-resolution=node --loader ts-node/esm path/to/example/or even
node --loader ts-node/esm path/to/example/tsconfig.json need the module and target set to something recent.
{
  "compilerOptions": {
    "esModuleInterop": true,
    "module": "ESNext",
    "target": "ES2020"
  },
  "include": [
    "./**/*.ts"
  ]
}