ts-node doesn't work with Typescript 7.0.2

[gosato-netacea]

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Expected Behavior

ts-node should work with Typescript 7.0.2

Actual Behavior

ts-node crashes with the following error message.
It has broken our CI/CD pipeline since 16:00 UTC of 8 July which is exactly when Typescript 7 officially released. And we had to pivot typescript version to 6.0.3 to fix it.

/usr/local/lib/node_modules/ts-node/dist/configuration.js:91
    const { fileExists = ts.sys.fileExists, readFile = ts.sys.readFile, skipProject = index_1.DEFAULTS.skipProject, project = index_1.DEFAULTS.project, tsTrace = index_1.DEFAULTS.tsTrace, } = rawApiOptions;
                                ^

TypeError: Cannot read properties of undefined (reading 'fileExists')
    at readConfig (/usr/local/lib/node_modules/ts-node/dist/configuration.js:91:33)
    at findAndReadConfig (/usr/local/lib/node_modules/ts-node/dist/configuration.js:50:84)
    at phase3 (/usr/local/lib/node_modules/ts-node/dist/bin.js:254:67)
    at bootstrap (/usr/local/lib/node_modules/ts-node/dist/bin.js:47:30)
    at main (/usr/local/lib/node_modules/ts-node/dist/bin.js:33:12)
    at Object.<anonymous> (/usr/local/lib/node_modules/ts-node/dist/bin.js:579:5)
    at Module._compile (node:internal/modules/cjs/loader:1871:14)
    at Object..js (node:internal/modules/cjs/loader:2002:10)
    at Module.load (node:internal/modules/cjs/loader:1594:32)
    at Module._load (node:internal/modules/cjs/loader:1396:12)

Steps to reproduce the problem

Prerequistics: Debian linux with latest Docker

1. In an empty dir, create Dockerfile with following content

FROM node:24
RUN npm i -g  typescript@7.0.2 ts-node@10.9.2 
RUN npx tsc --init
RUN echo "console.log('Hello world')" >> helloworld.ts
CMD ["npx", "ts-node", "helloworld.ts"]

2. In the same dir, run docker container run $(docker image build . -q)
3. It outputs the error message described above
4. The container run also fails if you modify the 2nd line in Dockerfile to RUN npm i -g ts-node@10.9.2 as ts-node pulls the latest Typescript (7.0.2) anyways.
5. The container runs successfully and outputs Hello world if you modify the 2nd line in Dockerfile to RUN npm i -g typescript@6.0.3 ts-node@10.9.2

Minimal reproduction

Specifications

• ts-node version: 10.9.2
• node version: 24.18
• TypeScript version: 7.0.2
• tsconfig.json, if you're using one:

{} *The error above seems to be thrown before loading tsconfig.json 

• package.json:

{
  "name": "foo",
  "version": "1.0.0",
  "description": "",
  "main": "bar.js",
  "author": "",
  "license": "ISC",
  "dependencies": {
    "ts-node": "10.9.2",
    "typescript": "7.0.2"
  }
}

• Operating system and version: Ubuntu 24 (Confirmed both on WSL2 and Github Actions (Both ARM and X64))
• If Windows, are you using WSL or WSL2?: WSL2

[ClementValot]

Seeing that ts-node has seen low activity recently, I may suggest looking into tsx, which is mentioned in the Node documentation, and can in a lot of cases be a drop-in replacement for ts-node, that is compatible with TS 7.

e.g. in my case, I just had to replace node --test --loader=ts-node/esm with node --test --import=tsx

[beenotung]

I want to raise out that tsx is using esbuild under the neath, which does not do type-checking, so it is not a drop-in replacement for ts-node (and ts-node-dev).

But we may combine it with tsc --noEmit (with --watch if you need).

I still use ts-node when it doesn't conflict with the project setting, and use tsx otherwise.

[samchon]

You can use ttsx instead: https://github.com/samchon/ttsc