feat(ivy): ngcc - implement UmdDependencyHost (#25445)

The dependency resolution that works out the order in which
to process entry-points must also understand UMD formats.

PR Close #25445

packages/compiler-cli/ngcc/src/dependencies/dependency_resolver.ts

@@ -7,15 +7,11 @@
  */
 
 import {DepGraph} from 'dependency-graph';
-
 import {AbsoluteFsPath} from '../../../src/ngtsc/path';
 import {Logger} from '../logging/logger';
-import {EntryPoint, EntryPointJsonProperty, getEntryPointFormat} from '../packages/entry_point';
-
+import {EntryPoint, EntryPointFormat, EntryPointJsonProperty, getEntryPointFormat} from '../packages/entry_point';
 import {DependencyHost} from './dependency_host';
 
-
-
 /**
  * Holds information about entry points that are removed because
  * they have dependencies that are missing (directly or transitively).
@@ -68,7 +64,8 @@ export interface SortedEntryPointsInfo extends DependencyDiagnostics { entryPoin
  * A class that resolves dependencies between entry-points.
  */
 export class DependencyResolver {
-  constructor(private logger: Logger, private host: DependencyHost) {}
+  constructor(
+      private logger: Logger, private hosts: Partial<Record<EntryPointFormat, DependencyHost>>) {}
   /**
    * Sort the array of entry points so that the dependant entry points always come later than
    * their dependencies in the array.
@@ -118,8 +115,13 @@ export class DependencyResolver {
 
     // Now add the dependencies between them
     angularEntryPoints.forEach(entryPoint => {
-      const entryPointPath = getEntryPointPath(entryPoint);
-      const {dependencies, missing, deepImports} = this.host.findDependencies(entryPointPath);
+      const formatInfo = getEntryPointFormatInfo(entryPoint);
+      const host = this.hosts[formatInfo.format];
+      if (!host) {
+        throw new Error(
+            `Could not find a suitable format for computing dependencies of entry-point: '${entryPoint.path}'.`);
+      }
+      const {dependencies, missing, deepImports} = host.findDependencies(formatInfo.path);
 
       if (missing.size > 0) {
         // This entry point has dependencies that are missing
@@ -164,7 +166,8 @@ export class DependencyResolver {
   }
 }
 
-function getEntryPointPath(entryPoint: EntryPoint): AbsoluteFsPath {
+function getEntryPointFormatInfo(entryPoint: EntryPoint):
+    {format: EntryPointFormat, path: AbsoluteFsPath} {
   const properties = Object.keys(entryPoint.packageJson);
   for (let i = 0; i < properties.length; i++) {
     const property = properties[i] as EntryPointJsonProperty;
@@ -172,7 +175,7 @@ function getEntryPointPath(entryPoint: EntryPoint): AbsoluteFsPath {
 
     if (format === 'esm2015' || format === 'esm5' || format === 'umd') {
       const formatPath = entryPoint.packageJson[property] !;
-      return AbsoluteFsPath.resolve(entryPoint.path, formatPath);
+      return {format, path: AbsoluteFsPath.resolve(entryPoint.path, formatPath)};
     }
   }
   throw new Error(

packages/compiler-cli/ngcc/src/dependencies/umd_dependency_host.ts

@@ -0,0 +1,111 @@
+/**
+ * @license
+ * Copyright Google Inc. 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 * as ts from 'typescript';
+
+import {AbsoluteFsPath} from '../../../src/ngtsc/path';
+import {FileSystem} from '../file_system/file_system';
+import {getImportsOfUmdModule, parseStatementForUmdModule} from '../host/umd_host';
+
+import {DependencyHost, DependencyInfo} from './dependency_host';
+import {ModuleResolver, ResolvedDeepImport, ResolvedRelativeModule} from './module_resolver';
+
+
+
+/**
+ * Helper functions for computing dependencies.
+ */
+export class UmdDependencyHost implements DependencyHost {
+  constructor(private fs: FileSystem, private moduleResolver: ModuleResolver) {}
+
+  /**
+   * Find all the dependencies for the entry-point at the given path.
+   *
+   * @param entryPointPath The absolute path to the JavaScript file that represents an entry-point.
+   * @returns Information about the dependencies of the entry-point, including those that were
+   * missing or deep imports into other entry-points.
+   */
+  findDependencies(entryPointPath: AbsoluteFsPath): DependencyInfo {
+    const dependencies = new Set<AbsoluteFsPath>();
+    const missing = new Set<string>();
+    const deepImports = new Set<string>();
+    const alreadySeen = new Set<AbsoluteFsPath>();
+    this.recursivelyFindDependencies(
+        entryPointPath, dependencies, missing, deepImports, alreadySeen);
+    return {dependencies, missing, deepImports};
+  }
+
+  /**
+   * Compute the dependencies of the given file.
+   *
+   * @param file An absolute path to the file whose dependencies we want to get.
+   * @param dependencies A set that will have the absolute paths of resolved entry points added to
+   * it.
+   * @param missing A set that will have the dependencies that could not be found added to it.
+   * @param deepImports A set that will have the import paths that exist but cannot be mapped to
+   * entry-points, i.e. deep-imports.
+   * @param alreadySeen A set that is used to track internal dependencies to prevent getting stuck
+   * in a
+   * circular dependency loop.
+   */
+  private recursivelyFindDependencies(
+      file: AbsoluteFsPath, dependencies: Set<AbsoluteFsPath>, missing: Set<string>,
+      deepImports: Set<string>, alreadySeen: Set<AbsoluteFsPath>): void {
+    const fromContents = this.fs.readFile(file);
+    if (!this.hasRequireCalls(fromContents)) {
+      // Avoid parsing the source file as there are no require calls.
+      return;
+    }
+
+    // Parse the source into a TypeScript AST and then walk it looking for imports and re-exports.
+    const sf =
+        ts.createSourceFile(file, fromContents, ts.ScriptTarget.ES2015, false, ts.ScriptKind.JS);
+    if (sf.statements.length !== 1) {
+      return;
+    }
+
+    const umdModule = parseStatementForUmdModule(sf.statements[0]);
+    const umdImports = umdModule && getImportsOfUmdModule(umdModule);
+    if (umdImports === null) {
+      return;
+    }
+
+    umdImports.forEach(umdImport => {
+      const resolvedModule = this.moduleResolver.resolveModuleImport(umdImport.path, file);
+      if (resolvedModule) {
+        if (resolvedModule instanceof ResolvedRelativeModule) {
+          const internalDependency = resolvedModule.modulePath;
+          if (!alreadySeen.has(internalDependency)) {
+            alreadySeen.add(internalDependency);
+            this.recursivelyFindDependencies(
+                internalDependency, dependencies, missing, deepImports, alreadySeen);
+          }
+        } else {
+          if (resolvedModule instanceof ResolvedDeepImport) {
+            deepImports.add(resolvedModule.importPath);
+          } else {
+            dependencies.add(resolvedModule.entryPointPath);
+          }
+        }
+      } else {
+        missing.add(umdImport.path);
+      }
+    });
+  }
+
+  /**
+   * Check whether a source file needs to be parsed for imports.
+   * This is a performance short-circuit, which saves us from creating
+   * a TypeScript AST unnecessarily.
+   *
+   * @param source The content of the source file to check.
+   *
+   * @returns false if there are definitely no require calls
+   * in this file, true otherwise.
+   */
+  hasRequireCalls(source: string): boolean { return /require\(['"]/.test(source); }
+}

packages/compiler-cli/ngcc/src/main.ts

@@ -10,6 +10,7 @@ import {AbsoluteFsPath} from '../../src/ngtsc/path';
 import {DependencyResolver} from './dependencies/dependency_resolver';
 import {EsmDependencyHost} from './dependencies/esm_dependency_host';
 import {ModuleResolver} from './dependencies/module_resolver';
+import {UmdDependencyHost} from './dependencies/umd_dependency_host';
 import {FileSystem} from './file_system/file_system';
 import {NodeJSFileSystem} from './file_system/node_js_file_system';
 import {ConsoleLogger, LogLevel} from './logging/console_logger';
@@ -80,8 +81,10 @@ export function mainNgcc(
   const fs = new NodeJSFileSystem();
   const transformer = new Transformer(fs, logger);
   const moduleResolver = new ModuleResolver(fs, pathMappings);
-  const host = new EsmDependencyHost(fs, moduleResolver);
-  const resolver = new DependencyResolver(logger, host);
+  const esmDependencyHost = new EsmDependencyHost(fs, moduleResolver);
+  const umdDependencyHost = new UmdDependencyHost(fs, moduleResolver);
+  const resolver = new DependencyResolver(
+      logger, {esm5: esmDependencyHost, esm2015: esmDependencyHost, umd: umdDependencyHost});
   const finder = new EntryPointFinder(fs, logger, resolver);
   const fileWriter = getFileWriter(fs, createNewEntryPointFormats);
 

packages/compiler-cli/ngcc/test/dependencies/dependency_resolver_spec.ts

@@ -9,6 +9,7 @@ import {AbsoluteFsPath} from '../../../src/ngtsc/path';
 import {DependencyResolver, SortedEntryPointsInfo} from '../../src/dependencies/dependency_resolver';
 import {EsmDependencyHost} from '../../src/dependencies/esm_dependency_host';
 import {ModuleResolver} from '../../src/dependencies/module_resolver';
+import {FileSystem} from '../../src/file_system/file_system';
 import {EntryPoint} from '../../src/packages/entry_point';
 import {MockFileSystem} from '../helpers/mock_file_system';
 import {MockLogger} from '../helpers/mock_logger';
@@ -18,10 +19,13 @@ const _ = AbsoluteFsPath.from;
 describe('DependencyResolver', () => {
   let host: EsmDependencyHost;
   let resolver: DependencyResolver;
+  let fs: FileSystem;
+  let moduleResolver: ModuleResolver;
   beforeEach(() => {
-    const fs = new MockFileSystem();
-    host = new EsmDependencyHost(fs, new ModuleResolver(fs));
-    resolver = new DependencyResolver(new MockLogger(), host);
+    fs = new MockFileSystem();
+    moduleResolver = new ModuleResolver(fs);
+    host = new EsmDependencyHost(fs, moduleResolver);
+    resolver = new DependencyResolver(new MockLogger(), {esm5: host, esm2015: host});
   });
   describe('sortEntryPointsByDependency()', () => {
     const first = {
@@ -112,6 +116,13 @@ describe('DependencyResolver', () => {
       ])).toThrowError(`There is no appropriate source code format in '/first' entry-point.`);
     });
 
+    it('should error if there is no appropriate DependencyHost for the given formats', () => {
+      resolver = new DependencyResolver(new MockLogger(), {esm2015: host});
+      expect(() => resolver.sortEntryPointsByDependency([first]))
+          .toThrowError(
+              `Could not find a suitable format for computing dependencies of entry-point: '/first'.`);
+    });
+
     it('should capture any dependencies that were ignored', () => {
       spyOn(host, 'findDependencies').and.callFake(createFakeComputeDependencies(dependencies));
       const result = resolver.sortEntryPointsByDependency([fifth, first, fourth, second, third]);
@@ -138,6 +149,29 @@ describe('DependencyResolver', () => {
       expect(sorted.entryPoints).toEqual([fifth]);
     });
 
+    it('should use the appropriate DependencyHost for each entry-point', () => {
+      const esm5Host = new EsmDependencyHost(fs, moduleResolver);
+      const esm2015Host = new EsmDependencyHost(fs, moduleResolver);
+      resolver = new DependencyResolver(new MockLogger(), {esm5: esm5Host, esm2015: esm2015Host});
+      spyOn(esm5Host, 'findDependencies').and.callFake(createFakeComputeDependencies(dependencies));
+      spyOn(esm2015Host, 'findDependencies')
+          .and.callFake(createFakeComputeDependencies(dependencies));
+      const result = resolver.sortEntryPointsByDependency([fifth, first, fourth, second, third]);
+      expect(result.entryPoints).toEqual([fifth, fourth, third, second, first]);
+
+      expect(esm5Host.findDependencies).toHaveBeenCalledWith('/first/index.js');
+      expect(esm5Host.findDependencies).not.toHaveBeenCalledWith('/second/sub/index.js');
+      expect(esm5Host.findDependencies).toHaveBeenCalledWith('/third/index.js');
+      expect(esm5Host.findDependencies).not.toHaveBeenCalledWith('/fourth/sub2/index.js');
+      expect(esm5Host.findDependencies).toHaveBeenCalledWith('/fifth/index.js');
+
+      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith('/first/index.js');
+      expect(esm2015Host.findDependencies).toHaveBeenCalledWith('/second/sub/index.js');
+      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith('/third/index.js');
+      expect(esm2015Host.findDependencies).toHaveBeenCalledWith('/fourth/sub2/index.js');
+      expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith('/fifth/index.js');
+    });
+
     interface DepMap {
       [path: string]: {resolved: string[], missing: string[]};
     }

packages/compiler-cli/ngcc/test/dependencies/esm_dependency_host_spec.ts

@@ -14,7 +14,7 @@ import {MockFileSystem} from '../helpers/mock_file_system';
 
 const _ = AbsoluteFsPath.from;
 
-describe('DependencyHost', () => {
+describe('EsmDependencyHost', () => {
   let host: EsmDependencyHost;
   beforeEach(() => {
     const fs = createMockFileSystem();

packages/compiler-cli/ngcc/test/dependencies/umd_dependency_host_spec.ts

@@ -0,0 +1,192 @@
+/**
+ * @license
+ * Copyright Google Inc. 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 * as ts from 'typescript';
+
+import {AbsoluteFsPath} from '../../../src/ngtsc/path';
+import {ModuleResolver} from '../../src/dependencies/module_resolver';
+import {UmdDependencyHost} from '../../src/dependencies/umd_dependency_host';
+import {MockFileSystem} from '../helpers/mock_file_system';
+
+const _ = AbsoluteFsPath.from;
+
+describe('UmdDependencyHost', () => {
+  let host: UmdDependencyHost;
+  beforeEach(() => {
+    const fs = createMockFileSystem();
+    host = new UmdDependencyHost(fs, new ModuleResolver(fs));
+  });
+
+  describe('getDependencies()', () => {
+    it('should not generate a TS AST if the source does not contain any require calls', () => {
+      spyOn(ts, 'createSourceFile');
+      host.findDependencies(_('/no/imports/or/re-exports/index.js'));
+      expect(ts.createSourceFile).not.toHaveBeenCalled();
+    });
+
+    it('should resolve all the external imports of the source file', () => {
+      const {dependencies, missing, deepImports} =
+          host.findDependencies(_('/external/imports/index.js'));
+      expect(dependencies.size).toBe(2);
+      expect(missing.size).toBe(0);
+      expect(deepImports.size).toBe(0);
+      expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
+      expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
+    });
+
+    it('should resolve all the external re-exports of the source file', () => {
+      const {dependencies, missing, deepImports} =
+          host.findDependencies(_('/external/re-exports/index.js'));
+      expect(dependencies.size).toBe(2);
+      expect(missing.size).toBe(0);
+      expect(deepImports.size).toBe(0);
+      expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
+      expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
+    });
+
+    it('should capture missing external imports', () => {
+      const {dependencies, missing, deepImports} =
+          host.findDependencies(_('/external/imports-missing/index.js'));
+
+      expect(dependencies.size).toBe(1);
+      expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
+      expect(missing.size).toBe(1);
+      expect(missing.has('missing')).toBe(true);
+      expect(deepImports.size).toBe(0);
+    });
+
+    it('should not register deep imports as missing', () => {
+      // This scenario verifies the behavior of the dependency analysis when an external import
+      // is found that does not map to an entry-point but still exists on disk, i.e. a deep import.
+      // Such deep imports are captured for diagnostics purposes.
+      const {dependencies, missing, deepImports} =
+          host.findDependencies(_('/external/deep-import/index.js'));
+
+      expect(dependencies.size).toBe(0);
+      expect(missing.size).toBe(0);
+      expect(deepImports.size).toBe(1);
+      expect(deepImports.has('/node_modules/lib_1/deep/import')).toBe(true);
+    });
+
+    it('should recurse into internal dependencies', () => {
+      const {dependencies, missing, deepImports} =
+          host.findDependencies(_('/internal/outer/index.js'));
+
+      expect(dependencies.size).toBe(1);
+      expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
+      expect(missing.size).toBe(0);
+      expect(deepImports.size).toBe(0);
+    });
+
+    it('should handle circular internal dependencies', () => {
+      const {dependencies, missing, deepImports} =
+          host.findDependencies(_('/internal/circular_a/index.js'));
+      expect(dependencies.size).toBe(2);
+      expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
+      expect(dependencies.has(_('/node_modules/lib_1/sub_1'))).toBe(true);
+      expect(missing.size).toBe(0);
+      expect(deepImports.size).toBe(0);
+    });
+
+    it('should support `paths` alias mappings when resolving modules', () => {
+      const fs = createMockFileSystem();
+      host = new UmdDependencyHost(fs, new ModuleResolver(fs, {
+                                     baseUrl: '/dist',
+                                     paths: {
+                                       '@app/*': ['*'],
+                                       '@lib/*/test': ['lib/*/test'],
+                                     }
+                                   }));
+      const {dependencies, missing, deepImports} = host.findDependencies(_('/path-alias/index.js'));
+      expect(dependencies.size).toBe(4);
+      expect(dependencies.has(_('/dist/components'))).toBe(true);
+      expect(dependencies.has(_('/dist/shared'))).toBe(true);
+      expect(dependencies.has(_('/dist/lib/shared/test'))).toBe(true);
+      expect(dependencies.has(_('/node_modules/lib_1'))).toBe(true);
+      expect(missing.size).toBe(0);
+      expect(deepImports.size).toBe(0);
+    });
+  });
+
+  function createMockFileSystem() {
+    return new MockFileSystem({
+      '/no/imports/or/re-exports/index.js': '// some text but no import-like statements',
+      '/no/imports/or/re-exports/package.json': '{"esm2015": "./index.js"}',
+      '/no/imports/or/re-exports/index.metadata.json': 'MOCK METADATA',
+      '/external/imports/index.js': umd('imports_index', ['lib_1', 'lib_1/sub_1']),
+      '/external/imports/package.json': '{"esm2015": "./index.js"}',
+      '/external/imports/index.metadata.json': 'MOCK METADATA',
+      '/external/re-exports/index.js':
+          umd('imports_index', ['lib_1', 'lib_1/sub_1'], ['lib_1.X', 'lib_1sub_1.Y']),
+      '/external/re-exports/package.json': '{"esm2015": "./index.js"}',
+      '/external/re-exports/index.metadata.json': 'MOCK METADATA',
+      '/external/imports-missing/index.js': umd('imports_missing', ['lib_1', 'missing']),
+      '/external/imports-missing/package.json': '{"esm2015": "./index.js"}',
+      '/external/imports-missing/index.metadata.json': 'MOCK METADATA',
+      '/external/deep-import/index.js': umd('deep_import', ['lib_1/deep/import']),
+      '/external/deep-import/package.json': '{"esm2015": "./index.js"}',
+      '/external/deep-import/index.metadata.json': 'MOCK METADATA',
+      '/internal/outer/index.js': umd('outer', ['../inner']),
+      '/internal/outer/package.json': '{"esm2015": "./index.js"}',
+      '/internal/outer/index.metadata.json': 'MOCK METADATA',
+      '/internal/inner/index.js': umd('inner', ['lib_1/sub_1'], ['X']),
+      '/internal/circular_a/index.js': umd('circular_a', ['../circular_b', 'lib_1/sub_1'], ['Y']),
+      '/internal/circular_b/index.js': umd('circular_b', ['../circular_a', 'lib_1'], ['X']),
+      '/internal/circular_a/package.json': '{"esm2015": "./index.js"}',
+      '/internal/circular_a/index.metadata.json': 'MOCK METADATA',
+      '/re-directed/index.js': umd('re_directed', ['lib_1/sub_2']),
+      '/re-directed/package.json': '{"esm2015": "./index.js"}',
+      '/re-directed/index.metadata.json': 'MOCK METADATA',
+      '/path-alias/index.js':
+          umd('path_alias', ['@app/components', '@app/shared', '@lib/shared/test', 'lib_1']),
+      '/path-alias/package.json': '{"esm2015": "./index.js"}',
+      '/path-alias/index.metadata.json': 'MOCK METADATA',
+      '/node_modules/lib_1/index.d.ts': 'export declare class X {}',
+      '/node_modules/lib_1/package.json': '{"esm2015": "./index.js", "typings": "./index.d.ts"}',
+      '/node_modules/lib_1/index.metadata.json': 'MOCK METADATA',
+      '/node_modules/lib_1/deep/import/index.js': 'export class DeepImport {}',
+      '/node_modules/lib_1/sub_1/index.d.ts': 'export declare class Y {}',
+      '/node_modules/lib_1/sub_1/package.json':
+          '{"esm2015": "./index.js", "typings": "./index.d.ts"}',
+      '/node_modules/lib_1/sub_1/index.metadata.json': 'MOCK METADATA',
+      '/node_modules/lib_1/sub_2.d.ts': `export * from './sub_2/sub_2';`,
+      '/node_modules/lib_1/sub_2/sub_2.d.ts': `export declare class Z {}';`,
+      '/node_modules/lib_1/sub_2/package.json':
+          '{"esm2015": "./sub_2.js", "typings": "./sub_2.d.ts"}',
+      '/node_modules/lib_1/sub_2/sub_2.metadata.json': 'MOCK METADATA',
+      '/dist/components/index.d.ts': `export declare class MyComponent {};`,
+      '/dist/components/package.json': '{"esm2015": "./index.js", "typings": "./index.d.ts"}',
+      '/dist/components/index.metadata.json': 'MOCK METADATA',
+      '/dist/shared/index.d.ts': `import {X} from 'lib_1';\nexport declare class Service {}`,
+      '/dist/shared/package.json': '{"esm2015": "./index.js", "typings": "./index.d.ts"}',
+      '/dist/shared/index.metadata.json': 'MOCK METADATA',
+      '/dist/lib/shared/test/index.d.ts': `export class TestHelper {}`,
+      '/dist/lib/shared/test/package.json': '{"esm2015": "./index.js", "typings": "./index.d.ts"}',
+      '/dist/lib/shared/test/index.metadata.json': 'MOCK METADATA',
+    });
+  }
+});
+
+function umd(moduleName: string, importPaths: string[], exportNames: string[] = []) {
+  const commonJsRequires = importPaths.map(p => `,require('${p}')`).join('');
+  const amdDeps = importPaths.map(p => `,'${p}'`).join('');
+  const globalParams =
+      importPaths.map(p => `,global.${p.replace('@angular/', 'ng.').replace(/\//g, '')}`).join('');
+  const params =
+      importPaths.map(p => `,${p.replace('@angular/', '').replace(/\.?\.?\//g, '')}`).join('');
+  const exportStatements =
+      exportNames.map(e => `  exports.${e.replace(/.+\./, '')} = ${e};`).join('\n');
+  return `
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports${commonJsRequires}) :
+  typeof define === 'function' && define.amd ? define('${moduleName}', ['exports'${amdDeps}], factory) :
+  (factory(global.${moduleName}${globalParams}));
+}(this, (function (exports${params}) { 'use strict';
+${exportStatements}
+})));
+  `;
+}

packages/compiler-cli/ngcc/test/packages/entry_point_finder_spec.ts

@@ -22,8 +22,8 @@ describe('findEntryPoints()', () => {
   let finder: EntryPointFinder;
   beforeEach(() => {
     const fs = createMockFileSystem();
-    resolver =
-        new DependencyResolver(new MockLogger(), new EsmDependencyHost(fs, new ModuleResolver(fs)));
+    resolver = new DependencyResolver(
+        new MockLogger(), {esm2015: new EsmDependencyHost(fs, new ModuleResolver(fs))});
     spyOn(resolver, 'sortEntryPointsByDependency').and.callFake((entryPoints: EntryPoint[]) => {
       return {entryPoints, ignoredEntryPoints: [], ignoredDependencies: []};
     });