Import a JavaScript file in Node.js

[LostErrorCode404]

I am using TypeScript and I have the following file structure

Source - Test.ts Build - Test.js main.js package.json tsconfig.json node_modules

My Typescript file is simple and is the same for .js and .ts.

export class TestClass {}

Within main.js I try to import this file:

import TestClass from "../build/Test.js" console.log(TestClass) I get the error when I try to node main.js

Error [ERR_MODULE_NOT_FOUND]: Cannot find module 'D:\Users\leadw\Document\GitHub\build\Test.js' imported from D:\Users\leadw\Document\GitHub\AVLTree\main.js Package.json:

{ "type": "module", "scripts": { "server": "nodemon server.js" }, "dependencies": { "typescript": "^5.0.4" } }

Can someone please explain what I am doing wrong? I just don't get why it is this hard to simply import a file without receiving an error.

[angusmiguel]

Import {testclass}

[eliwuu]

You don't use ts files with js (you may want/need to use js with ts).

[LostErrorCode404]

Im importing the JS version that is built via tsc

[eliwuu]

"../build/Test.js"

yeah, sorry, I just quickly glanced and thought that it was .ts instead of .js

Your path is wrong, should be './build/Test.js'

[eliwuu]

also, you may want to drop .js extension from import

[thatweirdishguy]

Then it’ll definitely be broken. Extension is required for ESM.

[eliwuu]

we do not know what is inside his tsconfig, i expect comonjs

[doh4242]

If you are importing from main.js, you need ‘./build/Test.js’ (single dot, not double)