Ts-node Unable to run single line TS Prgramme

[brijeshroy]

I am a newbie in TS & want to run a single line programme directly without tanspiling via ts-node
These are my specs

I ran below command

npm install -g typescript
npm install -g ts-node

This is my code

Console.log("Hello World");

I am getting below error

PS G:\New folder> ts-node "g:\New folder\Session1.ts"
(node:5020) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
(Use `node --trace-warnings ...` to show where the warning was created)
g:\New folder\Session1.ts:2
export {};
^^^^^^

SyntaxError: Unexpected token 'export'
    at internalCompileFunction (node:internal/vm:73:18)
    at wrapSafe (node:internal/modules/cjs/loader:1178:20)
    at Module._compile (node:internal/modules/cjs/loader:1220:27)
    at Module.m._compile (C:\Users\user\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:1618:23)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Object.require.extensions.<computed> [as .ts] (C:\Users\user\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:1621:12)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Function.Module._load (node:internal/modules/cjs/loader:960:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at phase4 (C:\Users\user\AppData\Roaming\npm\node_modules\ts-node\src\bin.ts:649:14)

I am not doing any import nothing, I think it should work without package.json file and even after adding package.json file the problem still persists....Please help me with this.

Thank You

[MukundaKatta]

The Console.log is the issue — TypeScript / JS is case-sensitive, should be lowercase console.log("Hello World");. The export {} line in the error is ts-node's module-wrapper boilerplate; it's not in your code. Fix the casing and the one-liner runs. For quick-and-dirty TS running, tsx file.ts is faster to set up than ts-node these days.

[potatohoney-p]

Your VS Code screenshot already has lowercase console.log. The export {} error comes from the generated JavaScript being passed to Node's CommonJS loader while it still contains ESM syntax.

For this standalone CommonJS example, put a tsconfig.json beside Session1.ts:

{
  "compilerOptions": {
    "module": "CommonJS"
  }
}

Keep the source as:

console.log("Hello World");

Then, from that folder, run:

ts-node Session1.ts

If you added a package.json, it should omit "type" or use "type": "commonjs" for this configuration. Adding "type": "module" alone is not the fix for the regular ts-node CommonJS invocation; native ESM uses a different setup. See the project's CommonJS/ESM guide.

I reproduced the exact export {} syntax error with lowercase console.log, no tsconfig.json, Node 18.16.1 and ts-node 10.9.2 (the versions in your screenshot), using TypeScript 5.6.3 on Linux. Adding the config above printed Hello World, including from a folder containing spaces. I haven't tested Windows itself, and your original TypeScript version isn't shown.

If it still fails, run these from the same folder and share their output:

ts-node -vv
ts-node --showConfig

They show the actual TypeScript version and effective configuration, including any inherited config, as documented in Troubleshooting. That helps distinguish a different setup from the reproduced case.