nx commands are no longer working with non solution tsconfig file

Current Behavior

If you do not have a solution tsconfig file (tsconfig.base.json), nx affected commands fail (and possible others)

Expected Behavior

It should work with non solution config files, i.e. with tsconfig.json file only.

Steps to Reproduce

$ npx create-nx-workspace test-workspace
$ cd test-workspace
$ npx nx affected --target=lint

All works as expected. Rename tsconfig.base.json to tsconfig.json.

$ npx nx affected --target=lint

This will error out.

Failure Logs

Error: ENOENT: no such file or directory, open 'C:\..\.././tsconfig.base.json'
    at Object.openSync (fs.js:448:3)
    at Object.readFileSync (fs.js:350:35)
    at TargetProjectLocator.defaultFileRead [as fileRead] (C:\..\..\node_modules\@nrwl\workspace\src\core\file-utils.js:150:17)
    at new TargetProjectLocator (C:\..\..\node_modules\@nrwl\workspace\src\core\target-project-locator.js:15:73)
    at buildExplicitTypeScriptDependencies (C:\..\..\node_modules\@nrwl\workspace\src\core\project-graph\build-dependencies\explicit-project-dependencies.js:8:34)
    at C:\..\..\node_modules\@nrwl\workspace\src\core\project-graph\project-graph.js:61:41
    at Array.forEach (<anonymous>)
    at buildProjectGraph (C:\..\..\node_modules\@nrwl\workspace\src\core\project-graph\project-graph.js:61:26)
    at Object.createProjectGraph (C:\..\..\node_modules\@nrwl\workspace\src\core\project-graph\project-graph.js:40:30)
    at Object.<anonymous> (C:\..\..\node_modules\@nrwl\workspace\src\command-line\affected.js:23:46) {
  errno: -4058,
  syscall: 'open',
  code: 'ENOENT',
  path: 'C:\\..\\..\\temp/./tsconfig.base.json'
}

Environment

 nx : Not Found
  @nrwl/angular : Not Found
  @nrwl/cli : 10.2.0
  @nrwl/cypress : Not Found
  @nrwl/eslint-plugin-nx : Not Found
  @nrwl/express : Not Found
  @nrwl/jest : Not Found
  @nrwl/linter : Not Found
  @nrwl/nest : Not Found
  @nrwl/next : Not Found
  @nrwl/node : Not Found
  @nrwl/react : Not Found
  @nrwl/schematics : Not Found
  @nrwl/tao : 10.2.0
  @nrwl/web : Not Found
  @nrwl/workspace : 10.2.0
  typescript : 3.9.7

Additional Information

I believe the issue was introduced here.

[cjanz]

I have opened a new issue #3874 for the problems.

[cjanz]

@vincentpalita @FrozenPandaz I have just tested the new Nx release 10.3.0 with the latest Angular CLI version (10.1.4) again.

In my case ng add @nrwl/workspace now completes without any errors (see #3770) 🥳. But the ng-add schematic doesn’t create a root-level tsconfig.base.json file although this file is referenced in the apps/<appname>/tsconfig.app.json file. This leads to several errors, i.e. the app cannot be started.

Also running another Nx schematic (e.g. ng generate @nrwl/angular:library --name=test) exits with Cannot read property 'paths' of undefined.

I will open a new issue for this problem so that I can provide further information.