feat(@schematics/angular): add use-library-builder migration to migrate from ng-packagr - #34232
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This pull request introduces a new migration schematic, use-library-builder, designed to transition Angular library projects from the legacy ng-packagr builder to the new @angular/build:library builder. The migration handles transferring target options, discovering and mapping secondary entry points to package.json exports, and cleaning up obsolete configuration files and dependencies. Feedback on the implementation suggests refactoring a while loop in the directory traversal logic to avoid assignment within the loop condition, which improves code readability and prevents potential linter warnings.
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…te from ng-packagr Adds an optional migration for v22.3.0 to migrate library projects from ng-packagr to the @angular/build:library builder. The migration: - Discovers and converts primary and secondary entry points into the library package.json exports map. - Migrates assets and style preprocessor options from ng-package.json. - Configures compilationMode: 'full' and declarationMap: true for the development configuration. - Deletes ng-package.json files and removes ngPackage from package.json. - Removes ng-packagr dependency and ensures @angular/build is present when no other ng-packagr targets remain.
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Adds an optional migration for v22.3.0 to migrate library projects from
ng-packagrto the@angular/build:librarybuilder.The migration:
package.jsonexportsmap.ng-package.json.compilationMode: 'full'anddeclarationMap: truefor thedevelopmentconfiguration.ng-package.jsonfiles and removesngPackagefrompackage.json.ng-packagrdependency and ensures@angular/buildis present when no otherng-packagrtargets remain.