How to fix ERR_UNKNOWN_FILE_EXTENSION in

In this TypeScript tutorial, we will explore different TypeScript loaders, including ts-node, tsx, and tsimp. We will also discuss the differences between loading CommonJS modules and ECMAScript modules in Node v18 and Node v20.
My FREE programming apps:
- apps.apple.com/app/id659282498
- play.google.com/store/apps/de...
My FREE TypeScript Course:
- typescript.tv/
Timeline:
00:00 Introduction
01:36 Syntax Error: Unexpected token
02:44 Select TypeScript Version
04:10 Using ts-node
05:01 Showing node require
05:50 ERR_UNKNOWN_FILE_EXTENSION and ts-node-esm
07:16 ERR_UNKNOWN_FILE_EXTENSION with Node v20
08:20 Showing node loader
08:55 Deactivating experimental warnings
10:00 Missing stack traces in Node v20 with ts-node
12:20 Showing TypeScript Execute (tsx)
13:30 Type checking with tsx
14:58 TypeScript Import Loader (tsimp)
17:00 Compilation Diagnostics
19:10 Showing cross-env
19:50 Note on development dependencies

[@TypeScriptTV]

If you want to run "ts-node" in production with ESM, then use: "tsc --noEmit && node --no-warnings=ExperimentalWarning --loader ts-node/esm/transpile-only src/main.ts" (see github.com/TypeStrong/ts-node/issues/104#issuecomment-1941702624)

[@antonioquintero-felizzola5334]

This is easily the most underrated TS channel on RUclips. Thank you for your videos Benny.

[@TypeScriptTV]

Thank you! I also think the same. 😅 Btw. I made an app for programmers: apps.apple.com/app/id659282498

[@humaitrix]

Thank you Benny! Amazing video, not only sharing the solution but explaining why it's the best solution available at the moment! Tks a lot

[@TypeScriptTV]

Thank you, Daniel! It's important for me to not only show the "how" but also explain the "why". I try to follow this principle in all my TypeScript tutorials. 😀

[@leonardogonzalezrodriguez2290]

Thank you so much for your explanation, it helped me a lot

[@damienbutt6320]

I’ve been using vite-node as my ts-node alternative. Seems to work really well out of the box with ESM. And nodmon etc. No issues.

[@TypeScriptTV]

Thanks for sharing this with us. Does it also show you stacktraces when using Node.js v20?

[@seeyou7989]

Thanks but what if i have to use nodemon

[@TypeScriptTV]

When using nodemon, you can create a "nodemon.json" file in your repository and use the commands in the "exec" section.

[@sayandedotcom]

how to do it with nodemon "node --loader ts-node/esm && nodemon ./index.ts"

[@TypeScriptTV]

Will you get type checking when doing this?