All files / core/injector container.ts

89.36% Statements 84/94
82.86% Branches 29/35
89.66% Functions 26/29
90.11% Lines 82/91
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231  1x     1x 1x 1x 1x 1x 1x 1x 1x 1x   1x 262x 262x 262x 262x       262x 262x           262x       126x                         60x             11x 1x   10x       10x 1x   9x 9x   9x 9x               11x 10x   1x   1x 1x 1x       4x 3x   1x       11x       3x       106x             3x   3x 3x   3x 3x       3x 3x       6x 1x   5x 1x   4x 4x       1x 1x             2x 1x   1x 1x       5x 1x   4x 4x       1x                   6x       7x 2x         4x 1x   3x             36x 36x     36x       45x       45x 42x   45x       45x       45x 42x   45x                                
import { DynamicModule } from '@nestjs/common';
import { GLOBAL_MODULE_METADATA } from '@nestjs/common/constants';
import { Type } from '@nestjs/common/interfaces/type.interface';
import { ApplicationConfig } from '../application-config';
import { CircularDependencyException } from '../errors/exceptions/circular-dependency.exception';
import { InvalidModuleException } from '../errors/exceptions/invalid-module.exception';
import { UnknownModuleException } from '../errors/exceptions/unknown-module.exception';
import { ApplicationReferenceHost } from '../helpers/application-ref-host';
import { ExternalContextCreator } from '../helpers/external-context-creator';
import { Reflector } from '../services';
import { ModuleCompiler } from './compiler';
import { Module } from './module';
import { ModulesContainer } from './modules-container';
 
export class NestContainer {
  private readonly globalModules = new Set<Module>();
  private readonly moduleCompiler = new ModuleCompiler();
  private readonly modules = new ModulesContainer();
  private readonly dynamicModulesMetadata = new Map<
    string,
    Partial<DynamicModule>
  >();
  private readonly reflector = new Reflector();
  private readonly applicationRefHost = new ApplicationReferenceHost();
  private externalContextCreator: ExternalContextCreator;
  private modulesContainer: ModulesContainer;
  private applicationRef: any;
 
  constructor(
    private readonly _applicationConfig: ApplicationConfig = void 0,
  ) {}
 
  get applicationConfig(): ApplicationConfig | undefined {
    return this._applicationConfig;
  }
 
  public setApplicationRef(applicationRef: any) {
    this.applicationRef = applicationRef;
 
    if (!this.applicationRefHost) {
      return;
    }
    this.applicationRefHost.applicationRef = applicationRef;
  }
 
  public getApplicationRef() {
    return this.applicationRef;
  }
 
  public async addModule(
    metatype: Type<any> | DynamicModule | Promise<DynamicModule>,
    scope: Type<any>[],
  ) {
    if (!metatype) {
      throw new InvalidModuleException(scope);
    }
    const { type, dynamicMetadata, token } = await this.moduleCompiler.compile(
      metatype,
      scope,
    );
    if (this.modules.has(token)) {
      return;
    }
    const module = new Module(type, scope, this);
    this.modules.set(token, module);
 
    this.addDynamicMetadata(token, dynamicMetadata, [].concat(scope, type));
    this.isGlobalModule(type) && this.addGlobalModule(module);
  }
 
  public addDynamicMetadata(
    token: string,
    dynamicModuleMetadata: Partial<DynamicModule>,
    scope: Type<any>[],
  ) {
    if (!dynamicModuleMetadata) {
      return undefined;
    }
    this.dynamicModulesMetadata.set(token, dynamicModuleMetadata);
 
    const { modules, imports } = dynamicModuleMetadata;
    this.addDynamicModules(modules, scope);
    this.addDynamicModules(imports, scope);
  }
 
  public addDynamicModules(modules: any[], scope: Type<any>[]) {
    if (!modules) {
      return undefined;
    }
    modules.forEach(module => this.addModule(module, scope));
  }
 
  public isGlobalModule(metatype: Type<any>): boolean {
    return !!Reflect.getMetadata(GLOBAL_MODULE_METADATA, metatype);
  }
 
  public addGlobalModule(module: Module) {
    this.globalModules.add(module);
  }
 
  public getModules(): ModulesContainer {
    return this.modules;
  }
 
  public async addRelatedModule(
    relatedModule: Type<any> | DynamicModule,
    token: string,
  ) {
    Iif (!this.modules.has(token)) return;
 
    const module = this.modules.get(token);
    const parent = module.metatype;
 
    const scope = [].concat(module.scope, parent);
    const { token: relatedModuleToken } = await this.moduleCompiler.compile(
      relatedModule,
      scope,
    );
    const related = this.modules.get(relatedModuleToken);
    module.addRelatedModule(related);
  }
 
  public addComponent(component: Type<any>, token: string): string {
    if (!component) {
      throw new CircularDependencyException();
    }
    if (!this.modules.has(token)) {
      throw new UnknownModuleException();
    }
    const module = this.modules.get(token);
    return module.addComponent(component);
  }
 
  public addInjectable(injectable: Type<any>, token: string) {
    Eif (!this.modules.has(token)) {
      throw new UnknownModuleException();
    }
    const module = this.modules.get(token);
    module.addInjectable(injectable);
  }
 
  public addExportedComponent(exportedComponent: Type<any>, token: string) {
    if (!this.modules.has(token)) {
      throw new UnknownModuleException();
    }
    const module = this.modules.get(token);
    module.addExportedComponent(exportedComponent);
  }
 
  public addController(controller: Type<any>, token: string) {
    if (!this.modules.has(token)) {
      throw new UnknownModuleException();
    }
    const module = this.modules.get(token);
    module.addRoute(controller);
  }
 
  public clear() {
    this.modules.clear();
  }
 
  public replace(toReplace, options: any & { scope: any[] | null }) {
    [...this.modules.values()].forEach(module => {
      module.replace(toReplace, options);
    });
  }
 
  public bindGlobalScope() {
    this.modules.forEach(module => this.bindGlobalsToRelatedModules(module));
  }
 
  public bindGlobalsToRelatedModules(module: Module) {
    this.globalModules.forEach(globalModule =>
      this.bindGlobalModuleToModule(module, globalModule),
    );
  }
 
  public bindGlobalModuleToModule(module: Module, globalModule: Module) {
    if (module === globalModule) {
      return undefined;
    }
    module.addRelatedModule(globalModule);
  }
 
  public getDynamicMetadataByToken(
    token: string,
    metadataKey: keyof DynamicModule,
  ): any[] {
    const metadata = this.dynamicModulesMetadata.get(token);
    Iif (metadata && metadata[metadataKey]) {
      return metadata[metadataKey] as any[];
    }
    return [];
  }
 
  public getReflector(): Reflector {
    return this.reflector;
  }
 
  public getExternalContextCreator(): ExternalContextCreator {
    if (!this.externalContextCreator) {
      this.externalContextCreator = ExternalContextCreator.fromContainer(this);
    }
    return this.externalContextCreator;
  }
 
  public getApplicationRefHost(): ApplicationReferenceHost {
    return this.applicationRefHost;
  }
 
  public getModulesContainer(): ModulesContainer {
    if (!this.modulesContainer) {
      this.modulesContainer = this.getModules();
    }
    return this.modulesContainer;
  }
}
 
export interface InstanceWrapper<T> {
  name: any;
  metatype: Type<T>;
  instance: T;
  isResolved: boolean;
  isPending?: boolean;
  done$?: Promise<void>;
  inject?: Type<any>[];
  isNotMetatype?: boolean;
  forwardRef?: boolean;
  async?: boolean;
}