I was trying to execute the .ts file by ts-node and got the following error:

(node:38108) Warning: To load an ES module, set “type”: “module” in the package.json or use the .mjs extension.
SyntaxError: Cannot use import statement outside a module

In many posts, the specifying of "type": "module" in the package.json is being represented as the working solution. If only it were that simple… Once do it, the above error will change to:

TypeError: Unknown file extension “.ts” for C:XXXSample.ts

Too strange for ts-node which working with “.ts” files, does not it?

I have no the unambiguous experimental data, but I suppose, the "type": "module" could cause more troubles because most libraries has Common.js format, so I am trying to avoid it as possible. The rebuttals are welcome.

About tsconfig.json

First of all, the ts-node using the tsconfig.jsonas default even the target file is not covered by include option or files option. In my case, the main tsconfig.json is:

{

  "compilerOptions": {

    "target": "ES2022",
    "moduleResolution": "Node",
    "esModuleInterop": true,

    "strict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "skipLibCheck": true,

    "removeComments": true,

    "outDir": "Distributable/",
    "declaration": true
  },

  "include": [ "Source/**/*" ]

}

But for the file which I am trying execute, another tsconfing file is actual:

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "target": "ESNext",
    "module": "ESNext"
  },
  "include": [ "Tests/**/*" ]
}

To use this file, the --project tsconfig.test.json option required when run the ts-node.