/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { createInjectorWithoutInjectorInstances } from '../di/create_injector';
import { getNullInjector, R3Injector } from '../di/r3_injector';
import { ComponentFactoryResolver as viewEngine_ComponentFactoryResolver } from '../linker/component_factory_resolver';
import { NgModuleFactory as viewEngine_NgModuleFactory, NgModuleRef as viewEngine_NgModuleRef } from '../linker/ng_module_factory';
import { assertDefined } from '../util/assert';
import { stringify } from '../util/stringify';
import { ComponentFactoryResolver } from './component_ref';
import { getNgModuleDef } from './definition';
import { maybeUnwrapFn } from './util/misc_utils';
/**
 * Returns a new NgModuleRef instance based on the NgModule class and parent injector provided.
 *
 * @param ngModule NgModule class.
 * @param parentInjector Optional injector instance to use as a parent for the module injector. If
 *     not provided, `NullInjector` will be used instead.
 * @returns NgModuleRef that represents an NgModule instance.
 *
 * @publicApi
 */
export function createNgModule(ngModule, parentInjector) {
    return new NgModuleRef(ngModule, parentInjector ?? null, []);
}
/**
 * The `createNgModule` function alias for backwards-compatibility.
 * Please avoid using it directly and use `createNgModule` instead.
 *
 * @deprecated Use `createNgModule` instead.
 */
export const createNgModuleRef = createNgModule;
export class NgModuleRef extends viewEngine_NgModuleRef {
    constructor(ngModuleType, _parent, additionalProviders) {
        super();
        this._parent = _parent;
        // tslint:disable-next-line:require-internal-with-underscore
        this._bootstrapComponents = [];
        this.destroyCbs = [];
        // When bootstrapping a module we have a dependency graph that looks like this:
        // ApplicationRef -> ComponentFactoryResolver -> NgModuleRef. The problem is that if the
        // module being resolved tries to inject the ComponentFactoryResolver, it'll create a
        // circular dependency which will result in a runtime error, because the injector doesn't
        // exist yet. We work around the issue by creating the ComponentFactoryResolver ourselves
        // and providing it, rather than letting the injector resolve it.
        this.componentFactoryResolver = new ComponentFactoryResolver(this);
        const ngModuleDef = getNgModuleDef(ngModuleType);
        ngDevMode &&
            assertDefined(ngModuleDef, `NgModule '${stringify(ngModuleType)}' is not a subtype of 'NgModuleType'.`);
        this._bootstrapComponents = maybeUnwrapFn(ngModuleDef.bootstrap);
        this._r3Injector = createInjectorWithoutInjectorInstances(ngModuleType, _parent, [
            { provide: viewEngine_NgModuleRef, useValue: this }, {
                provide: viewEngine_ComponentFactoryResolver,
                useValue: this.componentFactoryResolver
            },
            ...additionalProviders
        ], stringify(ngModuleType), new Set(['environment']));
        // We need to resolve the injector types separately from the injector creation, because
        // the module might be trying to use this ref in its constructor for DI which will cause a
        // circular error that will eventually error out, because the injector isn't created yet.
        this._r3Injector.resolveInjectorInitializers();
        this.instance = this._r3Injector.get(ngModuleType);
    }
    get injector() {
        return this._r3Injector;
    }
    destroy() {
        ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');
        const injector = this._r3Injector;
        !injector.destroyed && injector.destroy();
        this.destroyCbs.forEach(fn => fn());
        this.destroyCbs = null;
    }
    onDestroy(callback) {
        ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');
        this.destroyCbs.push(callback);
    }
}
export class NgModuleFactory extends viewEngine_NgModuleFactory {
    constructor(moduleType) {
        super();
        this.moduleType = moduleType;
    }
    create(parentInjector) {
        return new NgModuleRef(this.moduleType, parentInjector, []);
    }
}
export function createNgModuleRefWithProviders(moduleType, parentInjector, additionalProviders) {
    return new NgModuleRef(moduleType, parentInjector, additionalProviders);
}
export class EnvironmentNgModuleRefAdapter extends viewEngine_NgModuleRef {
    constructor(config) {
        super();
        this.componentFactoryResolver = new ComponentFactoryResolver(this);
        this.instance = null;
        const injector = new R3Injector([
            ...config.providers,
            { provide: viewEngine_NgModuleRef, useValue: this },
            { provide: viewEngine_ComponentFactoryResolver, useValue: this.componentFactoryResolver },
        ], config.parent || getNullInjector(), config.debugName, new Set(['environment']));
        this.injector = injector;
        if (config.runEnvironmentInitializers) {
            injector.resolveInjectorInitializers();
        }
    }
    destroy() {
        this.injector.destroy();
    }
    onDestroy(callback) {
        this.injector.onDestroy(callback);
    }
}
/**
 * Create a new environment injector.
 *
 * Learn more about environment injectors in
 * [this guide](guide/standalone-components#environment-injectors).
 *
 * @param providers An array of providers.
 * @param parent A parent environment injector.
 * @param debugName An optional name for this injector instance, which will be used in error
 *     messages.
 *
 * @publicApi
 */
export function createEnvironmentInjector(providers, parent, debugName = null) {
    const adapter = new EnvironmentNgModuleRefAdapter({ providers, parent, debugName, runEnvironmentInitializers: true });
    return adapter.injector;
}
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If\n *     not provided, `NullInjector` will be used instead.\n * @returns NgModuleRef that represents an NgModule instance.\n *\n * @publicApi\n */\nexport function createNgModule<T>(\n    ngModule: Type<T>, parentInjector?: Injector): viewEngine_NgModuleRef<T> {\n  return new NgModuleRef<T>(ngModule, parentInjector ?? null, []);\n}\n\n/**\n * The `createNgModule` function alias for backwards-compatibility.\n * Please avoid using it directly and use `createNgModule` instead.\n *\n * @deprecated Use `createNgModule` instead.\n */\nexport const createNgModuleRef = createNgModule;\nexport class NgModuleRef<T> extends viewEngine_NgModuleRef<T> implements InternalNgModuleRef<T> {\n  // tslint:disable-next-line:require-internal-with-underscore\n  _bootstrapComponents: Type<any>[] = [];\n  // tslint:disable-next-line:require-internal-with-underscore\n  _r3Injector: R3Injector;\n  override instance: T;\n  destroyCbs: (() => void)[]|null = [];\n\n  // When bootstrapping a module we have a dependency graph that looks like this:\n  // ApplicationRef -> ComponentFactoryResolver -> NgModuleRef. The problem is that if the\n  // module being resolved tries to inject the ComponentFactoryResolver, it'll create a\n  // circular dependency which will result in a runtime error, because the injector doesn't\n  // exist yet. We work around the issue by creating the ComponentFactoryResolver ourselves\n  // and providing it, rather than letting the injector resolve it.\n  override readonly componentFactoryResolver: ComponentFactoryResolver =\n      new ComponentFactoryResolver(this);\n\n  constructor(\n      ngModuleType: Type<T>, public _parent: Injector|null, additionalProviders: StaticProvider[]) {\n    super();\n    const ngModuleDef = getNgModuleDef(ngModuleType);\n    ngDevMode &&\n        assertDefined(\n            ngModuleDef,\n            `NgModule '${stringify(ngModuleType)}' is not a subtype of 'NgModuleType'.`);\n\n    this._bootstrapComponents = maybeUnwrapFn(ngModuleDef!.bootstrap);\n    this._r3Injector = createInjectorWithoutInjectorInstances(\n                           ngModuleType, _parent,\n                           [\n                             {provide: viewEngine_NgModuleRef, useValue: this}, {\n                               provide: viewEngine_ComponentFactoryResolver,\n                               useValue: this.componentFactoryResolver\n                             },\n                             ...additionalProviders\n                           ],\n                           stringify(ngModuleType), new Set(['environment'])) as R3Injector;\n\n    // We need to resolve the injector types separately from the injector creation, because\n    // the module might be trying to use this ref in its constructor for DI which will cause a\n    // circular error that will eventually error out, because the injector isn't created yet.\n    this._r3Injector.resolveInjectorInitializers();\n    this.instance = this._r3Injector.get(ngModuleType);\n  }\n\n  override get injector(): EnvironmentInjector {\n    return this._r3Injector;\n  }\n\n  override destroy(): void {\n    ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');\n    const injector = this._r3Injector;\n    !injector.destroyed && injector.destroy();\n    this.destroyCbs!.forEach(fn => fn());\n    this.destroyCbs = null;\n  }\n  override onDestroy(callback: () => void): void {\n    ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');\n    this.destroyCbs!.push(callback);\n  }\n}\n\nexport class NgModuleFactory<T> extends viewEngine_NgModuleFactory<T> {\n  constructor(public moduleType: Type<T>) {\n    super();\n  }\n\n  override create(parentInjector: Injector|null): viewEngine_NgModuleRef<T> {\n    return new NgModuleRef(this.moduleType, parentInjector, []);\n  }\n}\n\nexport function createNgModuleRefWithProviders<T>(\n    moduleType: Type<T>, parentInjector: Injector|null,\n    additionalProviders: StaticProvider[]): InternalNgModuleRef<T> {\n  return new NgModuleRef(moduleType, parentInjector, additionalProviders);\n}\n\nexport class EnvironmentNgModuleRefAdapter extends viewEngine_NgModuleRef<null> {\n  override readonly injector: R3Injector;\n  override readonly componentFactoryResolver: ComponentFactoryResolver =\n      new ComponentFactoryResolver(this);\n  override readonly instance = null;\n\n  constructor(config: {\n    providers: Array<Provider|EnvironmentProviders>,\n    parent: EnvironmentInjector|null,\n    debugName: string|null,\n    runEnvironmentInitializers: boolean\n  }) {\n    super();\n    const injector = new R3Injector(\n        [\n          ...config.providers,\n          {provide: viewEngine_NgModuleRef, useValue: this},\n          {provide: viewEngine_ComponentFactoryResolver, useValue: this.componentFactoryResolver},\n        ],\n        config.parent || getNullInjector(), config.debugName, new Set(['environment']));\n    this.injector = injector;\n    if (config.runEnvironmentInitializers) {\n      injector.resolveInjectorInitializers();\n    }\n  }\n\n  override destroy(): void {\n    this.injector.destroy();\n  }\n\n  override onDestroy(callback: () => void): void {\n    this.injector.onDestroy(callback);\n  }\n}\n\n/**\n * Create a new environment injector.\n *\n * Learn more about environment injectors in\n * [this guide](guide/standalone-components#environment-injectors).\n *\n * @param providers An array of providers.\n * @param parent A parent environment injector.\n * @param debugName An optional name for this injector instance, which will be used in error\n *     messages.\n *\n * @publicApi\n */\nexport function createEnvironmentInjector(\n    providers: Array<Provider|EnvironmentProviders>, parent: EnvironmentInjector,\n    debugName: string|null = null): EnvironmentInjector {\n  const adapter = new EnvironmentNgModuleRefAdapter(\n      {providers, parent, debugName, runEnvironmentInitializers: true});\n  return adapter.injector;\n}\n"]}