Importing defaults doesn't work under ESM

[magyargergo]

Hi there, I'm trying to import a module like this import * as prettier from 'prettier'; under NodeJS 16.13.2 with ts-node: 10.5.0. I'm using this command node --experimental-specifier-resolution=node --loader ts-node/esm script.ts to run my script but I get this error prettier.format is not a function. The following image shows an example:

I put the default after the module name and the format function becomes available.

This is the snippet of my tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "src",
    "declaration": false,
    "downlevelIteration": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "importHelpers": true,
    "lib": [
      "es2020",
      "dom"
    ],
    "module": "es2020",
    "moduleResolution": "node",
    "outDir": "./dist",
    "sourceMap": true,
    "strict": true,
    "target": "es2020",
}

The package.json has "type": "module" set.

I found this in the NodeJS documentation: https://nodejs.org/api/esm.html#esm_interoperability_with_commonjs

[cspotcode]

You might be hitting this issue, copied from the nodejs documentation that you linked:

When importing CommonJS modules, the module.exports object is provided as the default export. Named exports may be available, provided by static analysis as a convenience for better ecosystem compatibility.

You are doing a wildcard import, but a default import. So that's the first thing I would test.