Refactoring schematics for standalone migration

[erdemcaygor]

Description

Resolves https://github.com/volosoft/volo/issues/19594

✅ Test Cases

📦 create-lib

• Create library using --packageName
• Generates correct structure for --templateType=module
• Generates correct structure for --templateType=standalone
• Works with --isSecondaryEntrypoint=true (nested entrypoint)
• Generated files are exported from public-api.ts
• Output is valid TypeScript with no syntax errors
• Respects --override=false to skip existing files
• Supports both standalone and module-based apps
• Import generated library correctly into main application
• No duplicate imports or providers on repeated runs

🎨 change-theme

• Removes previous theme imports from app.module.ts or main.ts
• Removes previous theme providers from providers: [...]
• Adds new theme module imports (e.g. ThemeXModule.forRoot())
• Adds new theme providers (e.g. provideThemeXConfig())
• Supports both standalone and module-based apps
• No duplicate imports or providers on repeated runs

How To Test

1. Build the Schematics Package

Navigate to the npm/ng-packs folder and run the following command:

yarn run build:schematics

This will generate the dist/packages/schematics folder under npm/ng-packs.

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2. Link the Built Package Locally

Navigate to the generated schematics folder and link it to your local environment:

cd dist/packages/schematics
yarn link

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3. Link the Package to Your Angular Project

In your Angular project's root directory (where package.json is located), run the following command to create a local reference:

yarn link "@abp/ng.schematics"

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4. Generate a New Library

Use the following schematic command to generate a new library named Book:

npx ng g @abp/ng.schematics:create-lib --package-name "Book"

Follow the interactive prompts to complete the setup.

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5. Change the Default Theme

To replace the theme, run:

npx ng g @abp/ng.schematics:change-theme

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[sumeyyeKurtulus]

I believe we can directly remove this comment

[erdemcaygor]

removed b8996b9

[gizemmutukurt]

• Getting an error with the HttpErrorComponent parameter when switching tothe basic theme.