Angular Modernizer
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    Class BootstrapExecutionAnalyzer

    Finds bootstrap roots and walks what they execute.

    Answers "what runs while the app starts, and does any of it read X?": collects the code roots Angular executes at bootstrap (initializers, bootstrap component/module), on the first HTTP request (interceptors) and on first injection (provider factories), and walks everything reachable from them through calls and dependency injection.

    Edges (BootstrapEdge):

    • call: call expressions, new X(), super(), getter/setter access (resolved by CallableResolver, the same resolution CallGraphBuilder uses)
    • inject: inject(X) runs the constructor of X, or the factory/class registered for the token X
    • ctor-param: a constructor parameter of type X (or @Inject(TOKEN)) does the same
    • provider-deps: deps: [A, B] of a factory provider

    Roots are found by scanning source files, not by evaluating which providers are actually registered: a provideAppInitializer inside a provideX() function that is never called is still reported. Spec files are skipped. Reads are matched by expression text (AppConfig.settings also matches AppConfig?.settings).

    const result = new BootstrapExecutionAnalyzer(project).analyze({ watch: ['AppConfig.settings'] });
    // result.watchHits[0] -> { watch: 'AppConfig.settings', root: 'HTTP_INTERCEPTORS useClass AuthInterceptor',
    //   path: ['AuthInterceptor.constructor', 'ConfigHelper.isOffline'], file, line, snippet }
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