Getting Started steps don't work on modern Node versions

[graforlock]

Describe the bug

Following getting started, we are meant to do lb4 app but that fails with _.gitignore

I see that loopback 4 supports very obscure and unmaintained version of node instead (v16).

Can that be made to support current LTS versions?

******@******-MacBook-Pro lb4 % node -v
v22.13.0
******@******-MacBook-Pro lb4 % lb4 app
? Project name: lb4
? Project description: lb4
? Project root directory: (lb4) lb4
>> Directory lb4 already exists.
******@******-MacBook-Pro lb4 % lb4 app
? Project description: app
? Project root directory: app
? Application class name: AppApplication
? Select features to enable in the project Enable eslint, Enable prettier, Enable mocha, Enable loopbackBuild, Enable vscode, Enable docker, Enable repositories, Enable services
? Yarn is available. Do you prefer to use it by default? No
node:events:502
      throw er; // Unhandled 'error' event
      ^

Error: ENOENT: no such file or directory, scandir '/Users/******/lb4/app/_.gitignore'
    at Object.readdirSync (node:fs:1584:26)
    at exports.readdir (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/@mrmlnc/readdir-enhanced/lib/sync/fs.js:18:20)
    at Object.safeCall [as safe] (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/@mrmlnc/readdir-enhanced/lib/call.js:24:8)
    at DirectoryReader.readNextDirectory (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/@mrmlnc/readdir-enhanced/lib/directory-reader.js:78:10)
    at DirectoryReader.stream._read (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/@mrmlnc/readdir-enhanced/lib/directory-reader.js:57:18)
    at Readable.read (node:internal/streams/readable:739:12)
    at readdirSync (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/@mrmlnc/readdir-enhanced/lib/sync/index.js:27:21)
    at Function.readdirSyncStat (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/@mrmlnc/readdir-enhanced/lib/index.js:34:10)
    at ReaderSync.dynamicApi (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/fast-glob/out/providers/reader-sync.js:64:24)
    at ReaderSync.api (/opt/homebrew/lib/node_modules/@loopback/cli/node_modules/fast-glob/out/providers/reader-sync.js:56:25)
Emitted 'error' event on Readable instance at:
    at emitErrorNT (node:internal/streams/destroy:170:8)
    at emitErrorCloseNT (node:internal/streams/destroy:129:3)
    at process.processTicksAndRejections (node:internal/process/task_queues:90:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'scandir',
  path: '/Users/******/lb4/app/_.gitignore'
}

Logs

No response

Additional information

No response

Reproduction

Following https://loopback.io/getting-started.html tutorial on any LTS (or newer) Node

[dhmlau]

@graforlock, I was able to create a LoopBack4 app using the same version of Node.js as you do.

Here is my output:

% node -v
v22.13.0
% lb4 app
(node:91204) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
? Project name: test
? Project description: test
? Project root directory: test
? Application class name: TestApplication
? Select features to enable in the project Enable eslint, Enable prettier, Enable mocha, Enable loopbackBuild,
 Enable editorconfig, Enable vscode, Enable docker, Enable repositories, Enable services
    force test/.yo-rc.json
   create test/.editorconfig
   create test/.eslintignore
   create test/.eslintrc.js
   create test/.mocharc.json
   create test/.prettierignore
   create test/.prettierrc
   create test/DEVELOPING.md
   create test/package.json
   create test/tsconfig.json
   create test/.vscode/launch.json
   create test/.vscode/settings.json
   create test/.vscode/tasks.json
   create test/.gitignore
   create test/.dockerignore
   create test/Dockerfile
   create test/README.md
   create test/public/index.html
   create test/src/application.ts
   create test/src/index.ts
   create test/src/migrate.ts
   create test/src/openapi-spec.ts
   create test/src/sequence.ts
   create test/src/__tests__/README.md
   create test/src/controllers/README.md
   create test/src/controllers/index.ts
   create test/src/controllers/ping.controller.ts
   create test/src/datasources/README.md
   create test/src/models/README.md
   create test/src/repositories/README.md
   create test/src/__tests__/acceptance/home-page.acceptance.ts
   create test/src/__tests__/acceptance/ping.controller.acceptance.ts
   create test/src/__tests__/acceptance/test-helper.ts

No change to package.json was detected. No package manager install will be executed.
npm warn config cache-min This option has been deprecated in favor of `--prefer-offline`.
npm warn deprecated [email protected]: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.
npm warn deprecated @humanwhocodes/[email protected]: Use @eslint/config-array instead
npm warn deprecated [email protected]: Rimraf versions prior to v4 are no longer supported
npm warn deprecated [email protected]: Rimraf versions prior to v4 are no longer supported
npm warn deprecated [email protected]: Rimraf versions prior to v4 are no longer supported
npm warn deprecated [email protected]: Rimraf versions prior to v4 are no longer supported
npm warn deprecated @humanwhocodes/[email protected]: Use @eslint/object-schema instead
npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported
npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported
npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported
npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported
npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported
npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported
npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported
npm warn deprecated [email protected]: This version is no longer supported. Please see https://eslint.org/version-support for other options.

added 647 packages, and audited 648 packages in 5s

109 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities

There's no _.gitignore file though, only .gitignore. Could you please run the following command to check which version of LB4 CLI you're using?

npm ls -g @loopback/cli

[uniconstructor]

Node 23.7.0 is also not supported at the moment: https://github.com/loopbackio/loopback-next/blob/master/package.json#L76

lb4 app
Node.js "23.7.0" is not supported. Please use a version that satisfies "18 || 20 || 22".

Should I expect any problems using Node 23.7.0 with latest Loopback 4?

[dhmlau]

I would think it works with Node.js 23. I've created PR#10826 to add it to CI.
If everything works fine, we can update the other package.json.