how to track down root cause of "could not read TS file" error from nx g @nx/angular:stories?

[DarthRainbows]

Running nx g @nx/angular:stories my-lib in my monorepo throws an error:

PS D:\source\my-app> nx g @nx/angular:stories my-lib --verbose

 NX  Generating @nx/angular:stories

√ Do you want to set up Storybook interaction tests? (Y/n) · false


 NX   Could not read TS file (/source/my-app/libs/my-lib/src/lib/my-lib/common/ui/my-component/my-component.component.ts).

Error: Could not read TS file (/source/my-app/libs/my-lib/src/lib/my-lib/common/ui/my-component/my-component.component.ts).
    at getTsSourceFile (D:\source\my-app\node_modules\.pnpm\@[email protected]_e4d771696e767f48b1122db33a2effe5\node_modules\@nx\angular\src\utils\nx-devkit\ast-utils.js:624:15)
    at getInputPropertyDeclarations (D:\source\my-app\node_modules\.pnpm\@[email protected]_e4d771696e767f48b1122db33a2effe5\node_modules\@nx\angular\src\generators\utils\storybook-ast\storybook-inputs.js:15:50)
    at getComponentProps (D:\source\my-app\node_modules\.pnpm\@[email protected]_e4d771696e767f48b1122db33a2effe5\node_modules\@nx\angular\src\generators\utils\storybook-ast\storybook-inputs.js:25:19)
    at componentStoryGenerator (D:\source\my-app\node_modules\.pnpm\@[email protected]_e4d771696e767f48b1122db33a2effe5\node_modules\@nx\angular\src\generators\component-story\component-story.js:14:60)
    at angularStoriesGenerator (D:\source\my-app\node_modules\.pnpm\@[email protected]_e4d771696e767f48b1122db33a2effe5\node_modules\@nx\angular\src\generators\stories\stories.js:27:45)
    at D:\source\my-app\node_modules\.pnpm\[email protected]_@swc-node+registe_14794d13443375fd18212a6d004049dc\node_modules\nx\src\command-line\generate\generate.js:240:32
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async handleErrors (D:\source\my-app\node_modules\.pnpm\[email protected]_@swc-node+registe_14794d13443375fd18212a6d004049dc\node_modules\nx\src\utils\handle-errors.js:8:24)
    at async Object.handler (D:\source\my-app\node_modules\.pnpm\[email protected]_@swc-node+registe_14794d13443375fd18212a6d004049dc\node_modules\nx\src\command-line\generate\command-object.js:13:22)

The library builds with no errors. The component itself is fine:

import { CommonModule } from '@angular/common';
import { Component, input } from '@angular/core';

import { DataModel, DataComponent } from '../..';

@Component({
  imports: [CommonModule, DataComponent],
  selector: 'my-lib-my',
  templateUrl: './my.component.html',
  styleUrl: './my.component.css'
})
export class MyComponent {
  data = input<DataModel>();
}

MyComponent here is lexicographically the first, so it gets picked up by the schematic first; it's not able to read any component.

.storybook/main.ts in case it matters

import type { StorybookConfig } from '@storybook/angular';

const config: StorybookConfig = {
  stories: ['../**/*.@(mdx|stories.@(js|jsx|ts|tsx))'],
  addons: [
    '@storybook/addon-essentials',
    '@storybook/addon-interactions',
    '@chromatic-com/storybook'
  ],

  framework: {
    name: '@storybook/angular',
    options: {
      builder: {
        viteConfigPath: 'libs/game/vite.config.mts'
      }
    },
  },

  docs: {
    autodocs: true
  }
};

export default config;

I attempted to build a minimal reproduction of the error, but ended up being unable to reproduce it. It only happens in my monorepo, which suggests a configuration error or something in conflict. I am bashing my head against the wall attempting to figure out what the could possibly be. Any suggestions for where to look would be most welcome.

Angular 19.2.8
nx 20.8.0
@nx/storybook 20.8.0

[DarthRainbows]

I never figured out exactly what caused this error, but I suspect it was something in the project.json file that the storybook generator didn't like. I renamed this library, created a new one with the same name, imported all the components from the old one, and went through the storybook config process. Story files now generate as expected.