Class NgCompiler

packages/compiler-cli/src/ngtsc/core/src/compiler.ts:361–1719

 * See the README.md for more information.
 */
export class NgCompiler {
  /**
   * Lazily evaluated state of the compilation.
   *
   * This is created on demand by calling `ensureAnalyzed`.
   */
  private compilation: LazyCompilationState | null = null;

  /**
   * Any diagnostics related to the construction of the compilation.
   *
   * These are diagnostics which arose during setup of the host and/or program.
   */
  private constructionDiagnostics: ts.Diagnostic[] = [];

  /**
   * Non-template diagnostics related to the program itself. Does not include template
   * diagnostics because the template type checker memoizes them itself.
   *
   * This is set by (and memoizes) `getNonTemplateDiagnostics`.
   */
  private nonTemplateDiagnostics: ts.Diagnostic[] | null = null;

  private closureCompilerEnabled: boolean;
  private currentProgram: ts.Program;
  private entryPoint: ts.SourceFile | null;
  private moduleResolver: ModuleResolver;
  private resourceManager: AdapterResourceLoader;
  private cycleAnalyzer: CycleAnalyzer;
  readonly ignoreForDiagnostics: Set<ts.SourceFile>;
  readonly ignoreForEmit: Set<ts.SourceFile>;
  readonly enableTemplateTypeChecker: boolean;
  private readonly enableBlockSyntax: boolean;
  private readonly enableLetSyntax: boolean;
  private readonly angularCoreVersion: string | null;
  private readonly enableHmr: boolean;
  private readonly implicitStandaloneValue: boolean;
  private readonly enableSelectorless: boolean;
  private readonly emitDeclarationOnly: boolean;

  /**
   * `NgCompiler` can be reused for multiple compilations (for resource-only changes), and each
   * new compilation uses a fresh `PerfRecorder`. Thus, classes created with a lifespan of the
   * `NgCompiler` use a `DelegatingPerfRecorder` so the `PerfRecorder` they write to can be updated
   * with each fresh compilation.
   */
  private delegatingPerfRecorder: DelegatingPerfRecorder;

  /**
   * Convert a `CompilationTicket` into an `NgCompiler` instance for the requested compilation.
   *
   * Depending on the nature of the compilation request, the `NgCompiler` instance may be reused
   * from a previous compilation and updated with any changes, it may be a new instance which
   * incrementally reuses state from a previous compilation, or it may represent a fresh
   * compilation entirely.
   */
  static fromTicket(ticket: CompilationTicket, adapter: NgCompilerAdapter) {
    switch (ticket.kind) {