Function doDowngrade

packages/upgrade/src/common/src/downgrade_component.ts:197–227

(injector: Injector, moduleInjector: Injector)

        const finalModuleInjector = moduleInjector || parentInjector!;

        const doDowngrade = (injector: Injector, moduleInjector: Injector) => {
          const injectorPromise = new ParentInjectorPromise(element);
          const facade = new DowngradeComponentAdapter(
            element,
            attrs,
            scope,
            ngModel,
            moduleInjector.get(EnvironmentInjector),
            injector,
            $compile,
            $parse,
            info.component,
            wrapCallback,
            unsafelyOverwriteSignalInputs,
          );

          const projectableNodes = facade.compileContents();
          const componentRef = facade.createComponentAndSetup(
            projectableNodes,
            isNgUpgradeLite,
            info.propagateDigest,
          );

          injectorPromise.resolve(componentRef.injector);

          if (ranAsync) {
            // If this is run async, it is possible that it is not run inside a
            // digest and initial input values will not be detected.
            scope.$evalAsync(() => {});
          }
        };

        const downgradeFn = !isNgUpgradeLite
          ? doDowngrade