diff --git a/packages/compiler-cli/ngcc/src/analysis/decoration_analyzer.ts b/packages/compiler-cli/ngcc/src/analysis/decoration_analyzer.ts
index 232506d3a7..f87c448561 100644
--- a/packages/compiler-cli/ngcc/src/analysis/decoration_analyzer.ts
+++ b/packages/compiler-cli/ngcc/src/analysis/decoration_analyzer.ts
@@ -10,7 +10,7 @@ import * as ts from 'typescript';
 
 import {BaseDefDecoratorHandler, ComponentDecoratorHandler, DirectiveDecoratorHandler, InjectableDecoratorHandler, NgModuleDecoratorHandler, PipeDecoratorHandler, ReferencesRegistry, ResourceLoader} from '../../../src/ngtsc/annotations';
 import {CycleAnalyzer, ImportGraph} from '../../../src/ngtsc/cycles';
-import {AbsoluteFsPath, FileSystem, LogicalFileSystem, absoluteFrom, dirname, resolve} from '../../../src/ngtsc/file_system';
+import {FileSystem, LogicalFileSystem, absoluteFrom, dirname, resolve} from '../../../src/ngtsc/file_system';
 import {AbsoluteModuleStrategy, LocalIdentifierStrategy, LogicalProjectStrategy, ModuleResolver, NOOP_DEFAULT_IMPORT_RECORDER, ReferenceEmitter} from '../../../src/ngtsc/imports';
 import {CompoundMetadataReader, CompoundMetadataRegistry, DtsMetadataReader, LocalMetadataRegistry} from '../../../src/ngtsc/metadata';
 import {PartialEvaluator} from '../../../src/ngtsc/partial_evaluator';
@@ -20,6 +20,7 @@ import {CompileResult, DecoratorHandler, DetectResult, HandlerPrecedence} from '
 import {NgccReflectionHost} from '../host/ngcc_host';
 import {EntryPointBundle} from '../packages/entry_point_bundle';
 import {isDefined} from '../utils';
+import {isWithinPackage} from './util';
 
 export interface AnalyzedFile {
   sourceFile: ts.SourceFile;
@@ -72,6 +73,7 @@ export class DecorationAnalyzer {
   private host = this.bundle.src.host;
   private typeChecker = this.bundle.src.program.getTypeChecker();
   private rootDirs = this.bundle.rootDirs;
+  private packagePath = this.bundle.entryPoint.package;
   private isCore = this.bundle.isCore;
   resourceManager = new NgccResourceLoader(this.fs);
   metaRegistry = new LocalMetadataRegistry();
@@ -130,6 +132,7 @@ export class DecorationAnalyzer {
   analyzeProgram(): DecorationAnalyses {
     const decorationAnalyses = new DecorationAnalyses();
     const analysedFiles = this.program.getSourceFiles()
+                              .filter(sourceFile => isWithinPackage(this.packagePath, sourceFile))
                               .map(sourceFile => this.analyzeFile(sourceFile))
                               .filter(isDefined);
     analysedFiles.forEach(analysedFile => this.resolveFile(analysedFile));
diff --git a/packages/compiler-cli/ngcc/src/analysis/switch_marker_analyzer.ts b/packages/compiler-cli/ngcc/src/analysis/switch_marker_analyzer.ts
index 394cab1797..fc8b3a0fa6 100644
--- a/packages/compiler-cli/ngcc/src/analysis/switch_marker_analyzer.ts
+++ b/packages/compiler-cli/ngcc/src/analysis/switch_marker_analyzer.ts
@@ -6,7 +6,9 @@
  * found in the LICENSE file at https://angular.io/license
  */
 import * as ts from 'typescript';
+import {AbsoluteFsPath} from '../../../src/ngtsc/file_system';
 import {NgccReflectionHost, SwitchableVariableDeclaration} from '../host/ngcc_host';
+import {isWithinPackage} from './util';
 
 export interface SwitchMarkerAnalysis {
   sourceFile: ts.SourceFile;
@@ -21,7 +23,7 @@ export const SwitchMarkerAnalyses = Map;
  * that will be replaced.
  */
 export class SwitchMarkerAnalyzer {
-  constructor(private host: NgccReflectionHost) {}
+  constructor(private host: NgccReflectionHost, private packagePath: AbsoluteFsPath) {}
   /**
    * Analyze the files in the program to identify declarations that contain R3
    * switch markers.
@@ -32,12 +34,14 @@ export class SwitchMarkerAnalyzer {
    */
   analyzeProgram(program: ts.Program): SwitchMarkerAnalyses {
     const analyzedFiles = new SwitchMarkerAnalyses();
-    program.getSourceFiles().forEach(sourceFile => {
-      const declarations = this.host.getSwitchableDeclarations(sourceFile);
-      if (declarations.length) {
-        analyzedFiles.set(sourceFile, {sourceFile, declarations});
-      }
-    });
+    program.getSourceFiles()
+        .filter(sourceFile => isWithinPackage(this.packagePath, sourceFile))
+        .forEach(sourceFile => {
+          const declarations = this.host.getSwitchableDeclarations(sourceFile);
+          if (declarations.length) {
+            analyzedFiles.set(sourceFile, {sourceFile, declarations});
+          }
+        });
     return analyzedFiles;
   }
 }
diff --git a/packages/compiler-cli/ngcc/src/analysis/util.ts b/packages/compiler-cli/ngcc/src/analysis/util.ts
new file mode 100644
index 0000000000..b4117ad913
--- /dev/null
+++ b/packages/compiler-cli/ngcc/src/analysis/util.ts
@@ -0,0 +1,13 @@
+/**
+ * @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, absoluteFromSourceFile, relative} from '../../../src/ngtsc/file_system';
+
+export function isWithinPackage(packagePath: AbsoluteFsPath, sourceFile: ts.SourceFile): boolean {
+  return !relative(packagePath, absoluteFromSourceFile(sourceFile)).startsWith('..');
+}
diff --git a/packages/compiler-cli/ngcc/src/packages/transformer.ts b/packages/compiler-cli/ngcc/src/packages/transformer.ts
index 23b6d76bba..99549ce9aa 100644
--- a/packages/compiler-cli/ngcc/src/packages/transformer.ts
+++ b/packages/compiler-cli/ngcc/src/packages/transformer.ts
@@ -122,7 +122,8 @@ export class Transformer {
   analyzeProgram(reflectionHost: NgccReflectionHost, bundle: EntryPointBundle): ProgramAnalyses {
     const referencesRegistry = new NgccReferencesRegistry(reflectionHost);
 
-    const switchMarkerAnalyzer = new SwitchMarkerAnalyzer(reflectionHost);
+    const switchMarkerAnalyzer =
+        new SwitchMarkerAnalyzer(reflectionHost, bundle.entryPoint.package);
     const switchMarkerAnalyses = switchMarkerAnalyzer.analyzeProgram(bundle.src.program);
 
     const decorationAnalyzer =
diff --git a/packages/compiler-cli/ngcc/test/analysis/decoration_analyzer_spec.ts b/packages/compiler-cli/ngcc/test/analysis/decoration_analyzer_spec.ts
index bcd31c248f..f5e462864e 100644
--- a/packages/compiler-cli/ngcc/test/analysis/decoration_analyzer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/analysis/decoration_analyzer_spec.ts
@@ -109,17 +109,19 @@ runInEachFileSystem(() => {
         beforeEach(() => {
           const TEST_PROGRAM = [
             {
-              name: _('/index.js'),
+              name: _('/node_modules/test-package/index.js'),
               contents: `
                 import * as test from './test';
                 import * as other from './other';
                 `,
             },
             {
-              name: _('/test.js'),
+              name: _('/node_modules/test-package/test.js'),
               contents: `
                   import {Component, Directive, Injectable} from '@angular/core';
 
+                  export class NoDecorators {}
+
                   export class MyComponent {}
                   MyComponent.decorators = [{type: Component}];
 
@@ -128,10 +130,11 @@ runInEachFileSystem(() => {
 
                   export class MyService {}
                   MyService.decorators = [{type: Injectable}];
+
                 `,
             },
             {
-              name: _('/other.js'),
+              name: _('/node_modules/test-package/other.js'),
               contents: `
                   import {Component} from '@angular/core';
 
@@ -144,22 +147,16 @@ runInEachFileSystem(() => {
         });
 
         it('should return an object containing a reference to the original source file', () => {
-          const testFile = getSourceFileOrError(program, _('/test.js'));
+          const testFile = getSourceFileOrError(program, _('/node_modules/test-package/test.js'));
           expect(result.get(testFile) !.sourceFile).toBe(testFile);
-          const otherFile = getSourceFileOrError(program, _('/other.js'));
+          const otherFile = getSourceFileOrError(program, _('/node_modules/test-package/other.js'));
           expect(result.get(otherFile) !.sourceFile).toBe(otherFile);
         });
 
         it('should call detect on the decorator handlers with each class from the parsed file',
            () => {
-             expect(testHandler.detect).toHaveBeenCalledTimes(11);
+             expect(testHandler.detect).toHaveBeenCalledTimes(5);
              expect(testHandler.detect.calls.allArgs().map(args => args[1])).toEqual([
-               null,
-               null,
-               null,
-               null,
-               null,
-               null,
                null,
                jasmine.arrayContaining([jasmine.objectContaining({name: 'Component'})]),
                jasmine.arrayContaining([jasmine.objectContaining({name: 'Directive'})]),
@@ -169,7 +166,7 @@ runInEachFileSystem(() => {
            });
 
         it('should return an object containing the classes that were analyzed', () => {
-          const file1 = getSourceFileOrError(program, _('/test.js'));
+          const file1 = getSourceFileOrError(program, _('/node_modules/test-package/test.js'));
           const compiledFile1 = result.get(file1) !;
           expect(compiledFile1.compiledClasses.length).toEqual(2);
           expect(compiledFile1.compiledClasses[0]).toEqual(jasmine.objectContaining({
@@ -179,7 +176,7 @@ runInEachFileSystem(() => {
             name: 'MyDirective', compilation: ['@Directive (compiled)'],
           } as unknown as CompiledClass));
 
-          const file2 = getSourceFileOrError(program, _('/other.js'));
+          const file2 = getSourceFileOrError(program, _('/node_modules/test-package/other.js'));
           const compiledFile2 = result.get(file2) !;
           expect(compiledFile2.compiledClasses.length).toEqual(1);
           expect(compiledFile2.compiledClasses[0]).toEqual(jasmine.objectContaining({
@@ -190,13 +187,7 @@ runInEachFileSystem(() => {
         it('should analyze, resolve and compile the classes that are detected', () => {
           expect(logs).toEqual([
             // Classes without decorators should also be detected.
-            'detect: ChangeDetectorRef (no decorators)',
-            'detect: ElementRef (no decorators)',
-            'detect: Injector (no decorators)',
-            'detect: TemplateRef (no decorators)',
-            'detect: ViewContainerRef (no decorators)',
-            'detect: Renderer2 (no decorators)',
-            'detect: ɵNgModuleFactory (no decorators)',
+            'detect: NoDecorators (no decorators)',
             // First detect and (potentially) analyze.
             'detect: MyComponent@Component',
             'analyze: MyComponent@Component',
@@ -221,7 +212,7 @@ runInEachFileSystem(() => {
         beforeEach(() => {
           const INTERNAL_COMPONENT_PROGRAM = [
             {
-              name: _('/entrypoint.js'),
+              name: _('/node_modules/test-package/entrypoint.js'),
               contents: `
             import {Component, NgModule} from '@angular/core';
             import {ImportedComponent} from './component';
@@ -237,7 +228,7 @@ runInEachFileSystem(() => {
           `
             },
             {
-              name: _('/component.js'),
+              name: _('/node_modules/test-package/component.js'),
               contents: `
             import {Component} from '@angular/core';
             export class ImportedComponent {}
@@ -253,7 +244,8 @@ runInEachFileSystem(() => {
         // files is not yet solved.
         it('should analyze an internally imported component, which is not publicly exported from the entry-point',
            () => {
-             const file = getSourceFileOrError(program, _('/component.js'));
+             const file =
+                 getSourceFileOrError(program, _('/node_modules/test-package/component.js'));
              const analysis = result.get(file) !;
              expect(analysis).toBeDefined();
              const ImportedComponent =
@@ -262,13 +254,58 @@ runInEachFileSystem(() => {
            });
 
         it('should analyze an internally defined component, which is not exported at all', () => {
-          const file = getSourceFileOrError(program, _('/entrypoint.js'));
+          const file = getSourceFileOrError(program, _('/node_modules/test-package/entrypoint.js'));
           const analysis = result.get(file) !;
           expect(analysis).toBeDefined();
           const LocalComponent = analysis.compiledClasses.find(f => f.name === 'LocalComponent') !;
           expect(LocalComponent).toBeDefined();
         });
       });
+
+      describe('external components', () => {
+        beforeEach(() => {
+          const EXTERNAL_COMPONENT_PROGRAM: TestFile[] = [
+            {
+              name: _('/node_modules/test-package/entrypoint.js'),
+              contents: `
+        import {Component, NgModule} from '@angular/core';
+        import {ImportedComponent} from 'other/component';
+
+        export class LocalComponent {}
+        LocalComponent.decorators = [{type: Component}];
+
+        export class MyModule {}
+        MyModule.decorators = [{type: NgModule, args: [{
+                    declarations: [ImportedComponent, LocalComponent],
+                    exports: [ImportedComponent, LocalComponent],
+                },] }];
+      `
+            },
+            {
+              name: _('/node_modules/other/component.js'),
+              contents: `
+        import {Component} from '@angular/core';
+        export class ImportedComponent {}
+        ImportedComponent.decorators = [{type: Component}];
+      `,
+              isRoot: false,
+            },
+            {
+              name: _('/node_modules/other/component.d.ts'),
+              contents: `
+        import {Component} from '@angular/core';
+        export class ImportedComponent {}`
+            },
+          ];
+
+          setUpAndAnalyzeProgram(EXTERNAL_COMPONENT_PROGRAM);
+        });
+
+        it('should ignore classes from an externally imported file', () => {
+          const file = program.getSourceFile(_('/node_modules/other/component.js')) !;
+          expect(result.has(file)).toBe(false);
+        });
+      });
     });
   });
-});
+});
\ No newline at end of file
diff --git a/packages/compiler-cli/ngcc/test/analysis/module_with_providers_analyzer_spec.ts b/packages/compiler-cli/ngcc/test/analysis/module_with_providers_analyzer_spec.ts
index e50396ae77..4b8b4a17d4 100644
--- a/packages/compiler-cli/ngcc/test/analysis/module_with_providers_analyzer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/analysis/module_with_providers_analyzer_spec.ts
@@ -32,7 +32,7 @@ runInEachFileSystem(() => {
 
         const TEST_PROGRAM: TestFile[] = [
           {
-            name: _('/src/entry-point.js'),
+            name: _('/node_modules/test-package/src/entry-point.js'),
             contents: `
             export * from './explicit';
             export * from './any';
@@ -42,7 +42,7 @@ runInEachFileSystem(() => {
           `
           },
           {
-            name: _('/src/explicit.js'),
+            name: _('/node_modules/test-package/src/explicit.js'),
             contents: `
             import {ExternalModule} from './module';
             import {LibraryModule} from 'some-library';
@@ -88,7 +88,7 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/src/any.js'),
+            name: _('/node_modules/test-package/src/any.js'),
             contents: `
             import {ExternalModule} from './module';
             import {LibraryModule} from 'some-library';
@@ -134,7 +134,7 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/src/implicit.js'),
+            name: _('/node_modules/test-package/src/implicit.js'),
             contents: `
             import {ExternalModule} from './module';
             import {LibraryModule} from 'some-library';
@@ -180,7 +180,7 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/src/no-providers.js'),
+            name: _('/node_modules/test-package/src/no-providers.js'),
             contents: `
             import {ExternalModule} from './module';
             import {LibraryModule} from 'some-library';
@@ -215,7 +215,7 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/src/module.js'),
+            name: _('/node_modules/test-package/src/module.js'),
             contents: `
             export class ExternalModule {}
             `
@@ -227,7 +227,7 @@ runInEachFileSystem(() => {
         ];
         const TEST_DTS_PROGRAM: TestFile[] = [
           {
-            name: _('/typings/entry-point.d.ts'),
+            name: _('/node_modules/test-package/typings/entry-point.d.ts'),
             contents: `
             export * from './explicit';
             export * from './any';
@@ -237,7 +237,7 @@ runInEachFileSystem(() => {
           `
           },
           {
-            name: _('/typings/explicit.d.ts'),
+            name: _('/node_modules/test-package/typings/explicit.d.ts'),
             contents: `
             import {ModuleWithProviders} from './core';
             import {ExternalModule} from './module';
@@ -254,7 +254,7 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/typings/any.d.ts'),
+            name: _('/node_modules/test-package/typings/any.d.ts'),
             contents: `
             import {ModuleWithProviders} from './core';
             export declare class AnyInternalModule {}
@@ -269,7 +269,7 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/typings/implicit.d.ts'),
+            name: _('/node_modules/test-package/typings/implicit.d.ts'),
             contents: `
             import {ExternalModule} from './module';
             import {LibraryModule} from 'some-library';
@@ -285,7 +285,7 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/typings/no-providers.d.ts'),
+            name: _('/node_modules/test-package/typings/no-providers.d.ts'),
             contents: `
             import {ModuleWithProviders} from './core';
             import {ExternalModule} from './module';
@@ -303,13 +303,13 @@ runInEachFileSystem(() => {
             `
           },
           {
-            name: _('/typings/module.d.ts'),
+            name: _('/node_modules/test-package/typings/module.d.ts'),
             contents: `
             export declare class ExternalModule {}
             `
           },
           {
-            name: _('/typings/core.d.ts'),
+            name: _('/node_modules/test-package/typings/core.d.ts'),
             contents: `
 
             export declare interface Type<T> {
@@ -343,11 +343,14 @@ runInEachFileSystem(() => {
       });
 
       it('should ignore declarations that already have explicit NgModule type params', () => {
-        expect(getAnalysisDescription(analyses, _('/typings/explicit.d.ts'))).toEqual([]);
+        expect(
+            getAnalysisDescription(analyses, _('/node_modules/test-package/typings/explicit.d.ts')))
+            .toEqual([]);
       });
 
       it('should find declarations that use `any` for the NgModule type param', () => {
-        const anyAnalysis = getAnalysisDescription(analyses, _('/typings/any.d.ts'));
+        const anyAnalysis =
+            getAnalysisDescription(analyses, _('/node_modules/test-package/typings/any.d.ts'));
         expect(anyAnalysis).toContain(['anyInternalFunction', 'AnyInternalModule', null]);
         expect(anyAnalysis).toContain(['anyExternalFunction', 'ExternalModule', null]);
         expect(anyAnalysis).toContain(['anyLibraryFunction', 'LibraryModule', 'some-library']);
@@ -359,7 +362,8 @@ runInEachFileSystem(() => {
       it('should track internal module references in the references registry', () => {
         const declarations = referencesRegistry.getDeclarationMap();
         const externalModuleDeclaration = getDeclaration(
-            program, absoluteFrom('/src/module.js'), 'ExternalModule', ts.isClassDeclaration);
+            program, absoluteFrom('/node_modules/test-package/src/module.js'), 'ExternalModule',
+            ts.isClassDeclaration);
         const libraryModuleDeclaration = getDeclaration(
             program, absoluteFrom('/node_modules/some-library/index.d.ts'), 'LibraryModule',
             ts.isClassDeclaration);
@@ -368,7 +372,8 @@ runInEachFileSystem(() => {
       });
 
       it('should find declarations that have implicit return types', () => {
-        const anyAnalysis = getAnalysisDescription(analyses, _('/typings/implicit.d.ts'));
+        const anyAnalysis =
+            getAnalysisDescription(analyses, _('/node_modules/test-package/typings/implicit.d.ts'));
         expect(anyAnalysis).toContain(['implicitInternalFunction', 'ImplicitInternalModule', null]);
         expect(anyAnalysis).toContain(['implicitExternalFunction', 'ExternalModule', null]);
         expect(anyAnalysis).toContain(['implicitLibraryFunction', 'LibraryModule', 'some-library']);
@@ -379,7 +384,8 @@ runInEachFileSystem(() => {
 
       it('should find declarations that do not specify a `providers` property in the return type',
          () => {
-           const anyAnalysis = getAnalysisDescription(analyses, _('/typings/no-providers.d.ts'));
+           const anyAnalysis = getAnalysisDescription(
+               analyses, _('/node_modules/test-package/typings/no-providers.d.ts'));
            expect(anyAnalysis).not.toContain([
              'noProvExplicitInternalFunction', 'NoProvidersInternalModule'
            ]);
diff --git a/packages/compiler-cli/ngcc/test/analysis/private_declarations_analyzer_spec.ts b/packages/compiler-cli/ngcc/test/analysis/private_declarations_analyzer_spec.ts
index 599110dca7..8a41159601 100644
--- a/packages/compiler-cli/ngcc/test/analysis/private_declarations_analyzer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/analysis/private_declarations_analyzer_spec.ts
@@ -27,7 +27,7 @@ runInEachFileSystem(() => {
 
            const TEST_PROGRAM: TestFile[] = [
              {
-               name: _('/src/entry_point.js'),
+               name: _('/node_modules/test-package/src/entry_point.js'),
                isRoot: true,
                contents: `
         export {PublicComponent} from './a';
@@ -36,7 +36,7 @@ runInEachFileSystem(() => {
       `
              },
              {
-               name: _('/src/a.js'),
+               name: _('/node_modules/test-package/src/a.js'),
                isRoot: false,
                contents: `
         import {Component} from '@angular/core';
@@ -47,7 +47,7 @@ runInEachFileSystem(() => {
       `
              },
              {
-               name: _('/src/b.js'),
+               name: _('/node_modules/test-package/src/b.js'),
                isRoot: false,
                contents: `
         import {Component, NgModule} from '@angular/core';
@@ -66,7 +66,7 @@ runInEachFileSystem(() => {
       `
              },
              {
-               name: _('/src/c.js'),
+               name: _('/node_modules/test-package/src/c.js'),
                isRoot: false,
                contents: `
         import {Component} from '@angular/core';
@@ -81,7 +81,7 @@ runInEachFileSystem(() => {
       `
              },
              {
-               name: _('/src/mod.js'),
+               name: _('/node_modules/test-package/src/mod.js'),
                isRoot: false,
                contents: `
         import {Component, NgModule} from '@angular/core';
@@ -100,7 +100,7 @@ runInEachFileSystem(() => {
            ];
            const TEST_DTS_PROGRAM = [
              {
-               name: _('/typings/entry_point.d.ts'),
+               name: _('/node_modules/test-package/typings/entry_point.d.ts'),
                isRoot: true,
                contents: `
         export {PublicComponent} from './a';
@@ -109,28 +109,28 @@ runInEachFileSystem(() => {
       `
              },
              {
-               name: _('/typings/a.d.ts'),
+               name: _('/node_modules/test-package/typings/a.d.ts'),
                isRoot: false,
                contents: `
         export declare class PublicComponent {}
       `
              },
              {
-               name: _('/typings/b.d.ts'),
+               name: _('/node_modules/test-package/typings/b.d.ts'),
                isRoot: false,
                contents: `
         export declare class ModuleB {}
       `
              },
              {
-               name: _('/typings/c.d.ts'),
+               name: _('/node_modules/test-package/typings/c.d.ts'),
                isRoot: false,
                contents: `
         export declare class InternalComponent1 {}
       `
              },
              {
-               name: _('/typings/mod.d.ts'),
+               name: _('/node_modules/test-package/typings/mod.d.ts'),
                isRoot: false,
                contents: `
         import {PublicComponent} from './a';
@@ -142,22 +142,31 @@ runInEachFileSystem(() => {
            ];
            const {program, referencesRegistry, analyzer} = setup(TEST_PROGRAM, TEST_DTS_PROGRAM);
 
-           addToReferencesRegistry(program, referencesRegistry, _('/src/a.js'), 'PublicComponent');
            addToReferencesRegistry(
-               program, referencesRegistry, _('/src/b.js'), 'PrivateComponent1');
+               program, referencesRegistry, _('/node_modules/test-package/src/a.js'),
+               'PublicComponent');
            addToReferencesRegistry(
-               program, referencesRegistry, _('/src/c.js'), 'InternalComponent1');
+               program, referencesRegistry, _('/node_modules/test-package/src/b.js'),
+               'PrivateComponent1');
+           addToReferencesRegistry(
+               program, referencesRegistry, _('/node_modules/test-package/src/c.js'),
+               'InternalComponent1');
 
            const analyses = analyzer.analyzeProgram(program);
            // Note that `PrivateComponent2` and `InternalComponent2` are not found because they are
            // not added to the ReferencesRegistry (i.e. they were not declared in an NgModule).
            expect(analyses.length).toEqual(2);
            expect(analyses).toEqual([
-             {identifier: 'PrivateComponent1', from: _('/src/b.js'), dtsFrom: null, alias: null},
+             {
+               identifier: 'PrivateComponent1',
+               from: _('/node_modules/test-package/src/b.js'),
+               dtsFrom: null,
+               alias: null
+             },
              {
                identifier: 'InternalComponent1',
-               from: _('/src/c.js'),
-               dtsFrom: _('/typings/c.d.ts'),
+               from: _('/node_modules/test-package/src/c.js'),
+               dtsFrom: _('/node_modules/test-package/typings/c.d.ts'),
                alias: null
              },
            ]);
@@ -167,7 +176,7 @@ runInEachFileSystem(() => {
         const _ = absoluteFrom;
         const ALIASED_EXPORTS_PROGRAM = [
           {
-            name: _('/src/entry_point.js'),
+            name: _('/node_modules/test-package/src/entry_point.js'),
             isRoot: true,
             contents: `
           // This component is only exported as an alias.
@@ -177,7 +186,7 @@ runInEachFileSystem(() => {
         `
           },
           {
-            name: _('/src/a.js'),
+            name: _('/node_modules/test-package/src/a.js'),
             isRoot: false,
             contents: `
         import {Component} from '@angular/core';
@@ -195,7 +204,7 @@ runInEachFileSystem(() => {
         ];
         const ALIASED_EXPORTS_DTS_PROGRAM = [
           {
-            name: _('/typings/entry_point.d.ts'),
+            name: _('/node_modules/test-package/typings/entry_point.d.ts'),
             isRoot: true,
             contents: `
           export declare class aliasedComponentOne {}
@@ -207,13 +216,15 @@ runInEachFileSystem(() => {
         const {program, referencesRegistry, analyzer} =
             setup(ALIASED_EXPORTS_PROGRAM, ALIASED_EXPORTS_DTS_PROGRAM);
 
-        addToReferencesRegistry(program, referencesRegistry, _('/src/a.js'), 'ComponentOne');
-        addToReferencesRegistry(program, referencesRegistry, _('/src/a.js'), 'ComponentTwo');
+        addToReferencesRegistry(
+            program, referencesRegistry, _('/node_modules/test-package/src/a.js'), 'ComponentOne');
+        addToReferencesRegistry(
+            program, referencesRegistry, _('/node_modules/test-package/src/a.js'), 'ComponentTwo');
 
         const analyses = analyzer.analyzeProgram(program);
         expect(analyses).toEqual([{
           identifier: 'ComponentOne',
-          from: _('/src/a.js'),
+          from: _('/node_modules/test-package/src/a.js'),
           dtsFrom: null,
           alias: 'aliasedComponentOne',
         }]);
diff --git a/packages/compiler-cli/ngcc/test/analysis/switch_marker_analyzer_spec.ts b/packages/compiler-cli/ngcc/test/analysis/switch_marker_analyzer_spec.ts
index dd60ee315f..3459406275 100644
--- a/packages/compiler-cli/ngcc/test/analysis/switch_marker_analyzer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/analysis/switch_marker_analyzer_spec.ts
@@ -11,54 +11,77 @@ import {loadTestFiles} from '../../../test/helpers';
 import {SwitchMarkerAnalyzer} from '../../src/analysis/switch_marker_analyzer';
 import {Esm2015ReflectionHost} from '../../src/host/esm2015_host';
 import {MockLogger} from '../helpers/mock_logger';
-import {getRootFiles, makeTestBundleProgram} from '../helpers/utils';
+import {makeTestEntryPointBundle} from '../helpers/utils';
 
 runInEachFileSystem(() => {
   describe('SwitchMarkerAnalyzer', () => {
+
+    let _: typeof absoluteFrom;
+    let TEST_PROGRAM: TestFile[];
+
+    beforeEach(() => {
+      _ = absoluteFrom;
+      TEST_PROGRAM = [
+        {
+          name: _('/node_modules/test/entrypoint.js'),
+          contents: `
+        import {a} from './a';
+        import {b} from './b';
+        import {x} from '../other/x';
+        `
+        },
+        {
+          name: _('/node_modules/test/a.js'),
+          contents: `
+        import {c} from './c';
+        export const a = 1;
+        `
+        },
+        {
+          name: _('/node_modules/test/b.js'),
+          contents: `
+        export const b = 42;
+        var factoryB = factory__PRE_R3__;
+        `
+        },
+        {
+          name: _('/node_modules/test/c.js'),
+          contents: `
+        export const c = 'So long, and thanks for all the fish!';
+        var factoryC = factory__PRE_R3__;
+        var factoryD = factory__PRE_R3__;
+        `
+        },
+        {
+          name: _('/node_modules/other/x.js'),
+          contents: `
+          export const x = 3.142;
+          var factoryX = factory__PRE_R3__;
+          `
+        },
+        {
+          name: _('/node_modules/other/x.d.ts'),
+          contents: `
+          export const x: number;
+          `
+        },
+      ];
+    });
+
     describe('analyzeProgram()', () => {
       it('should check for switchable markers in all the files of the program', () => {
-        const _ = absoluteFrom;
-        const TEST_PROGRAM: TestFile[] = [
-          {
-            name: _('/entrypoint.js'),
-            contents: `
-          import {a} from './a';
-          import {b} from './b';
-          `
-          },
-          {
-            name: _('/a.js'),
-            contents: `
-          import {c} from './c';
-          export const a = 1;
-          `
-          },
-          {
-            name: _('/b.js'),
-            contents: `
-          export const b = 42;
-          var factoryB = factory__PRE_R3__;
-          `
-          },
-          {
-            name: _('/c.js'),
-            contents: `
-          export const c = 'So long, and thanks for all the fish!';
-          var factoryC = factory__PRE_R3__;
-          var factoryD = factory__PRE_R3__;
-          `
-          },
-        ];
         loadTestFiles(TEST_PROGRAM);
-        const {program} = makeTestBundleProgram(getRootFiles(TEST_PROGRAM)[0]);
+        const bundle = makeTestEntryPointBundle(
+            'test', 'esm2015', 'esm2015', false, [_('/node_modules/test/entrypoint.js')]);
+        const program = bundle.src.program;
         const host = new Esm2015ReflectionHost(new MockLogger(), false, program.getTypeChecker());
-        const analyzer = new SwitchMarkerAnalyzer(host);
+        const analyzer = new SwitchMarkerAnalyzer(host, bundle.entryPoint.package);
         const analysis = analyzer.analyzeProgram(program);
 
-        const entrypoint = getSourceFileOrError(program, _('/entrypoint.js'));
-        const a = getSourceFileOrError(program, _('/a.js'));
-        const b = getSourceFileOrError(program, _('/b.js'));
-        const c = getSourceFileOrError(program, _('/c.js'));
+        const entrypoint = getSourceFileOrError(program, _('/node_modules/test/entrypoint.js'));
+        const a = getSourceFileOrError(program, _('/node_modules/test/a.js'));
+        const b = getSourceFileOrError(program, _('/node_modules/test/b.js'));
+        const c = getSourceFileOrError(program, _('/node_modules/test/c.js'));
 
         expect(analysis.size).toEqual(2);
         expect(analysis.has(entrypoint)).toBe(false);
@@ -76,6 +99,19 @@ runInEachFileSystem(() => {
           'factoryD = factory__PRE_R3__',
         ]);
       });
+
+      it('should ignore files that are outside the package', () => {
+        loadTestFiles(TEST_PROGRAM);
+        const bundle = makeTestEntryPointBundle(
+            'test', 'esm2015', 'esm2015', false, [_('/node_modules/test/entrypoint.js')]);
+        const program = bundle.src.program;
+        const host = new Esm2015ReflectionHost(new MockLogger(), false, program.getTypeChecker());
+        const analyzer = new SwitchMarkerAnalyzer(host, bundle.entryPoint.package);
+        const analysis = analyzer.analyzeProgram(program);
+
+        const x = getSourceFileOrError(program, _('/node_modules/other/x.js'));
+        expect(analysis.has(x)).toBe(false);
+      });
     });
   });
-});
+});
\ No newline at end of file
diff --git a/packages/compiler-cli/ngcc/test/analysis/util_spec.ts b/packages/compiler-cli/ngcc/test/analysis/util_spec.ts
new file mode 100644
index 0000000000..fd6ee82409
--- /dev/null
+++ b/packages/compiler-cli/ngcc/test/analysis/util_spec.ts
@@ -0,0 +1,31 @@
+/**
+ * @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 {absoluteFrom} from '../../../src/ngtsc/file_system';
+import {runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
+import {isWithinPackage} from '../../src/analysis/util';
+
+runInEachFileSystem(() => {
+  describe('isWithinPackage', () => {
+    it('should return true if the source-file is contained in the package', () => {
+      const _ = absoluteFrom;
+      const file =
+          ts.createSourceFile(_('/node_modules/test/src/index.js'), '', ts.ScriptTarget.ES2015);
+      const packagePath = _('/node_modules/test');
+      expect(isWithinPackage(packagePath, file)).toBe(true);
+    });
+
+    it('should return false if the source-file is not contained in the package', () => {
+      const _ = absoluteFrom;
+      const file =
+          ts.createSourceFile(_('/node_modules/other/src/index.js'), '', ts.ScriptTarget.ES2015);
+      const packagePath = _('/node_modules/test');
+      expect(isWithinPackage(packagePath, file)).toBe(false);
+    });
+  });
+});
diff --git a/packages/compiler-cli/ngcc/test/helpers/utils.ts b/packages/compiler-cli/ngcc/test/helpers/utils.ts
index 0c34fa6169..3b6bd99dd0 100644
--- a/packages/compiler-cli/ngcc/test/helpers/utils.ts
+++ b/packages/compiler-cli/ngcc/test/helpers/utils.ts
@@ -5,6 +5,7 @@
  * 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, NgtscCompilerHost, absoluteFrom, getFileSystem} from '../../../src/ngtsc/file_system';
 import {TestFile} from '../../../src/ngtsc/file_system/testing';
 import {BundleProgram, makeBundleProgram} from '../../src/packages/bundle_program';
@@ -49,8 +50,10 @@ export function makeTestEntryPointBundle(
 export function makeTestBundleProgram(
     path: AbsoluteFsPath, isCore: boolean = false): BundleProgram {
   const fs = getFileSystem();
-  const options = {allowJs: true, checkJs: false};
   const entryPointPath = fs.dirname(path);
+  const rootDir = fs.dirname(entryPointPath);
+  const options: ts.CompilerOptions =
+      {allowJs: true, maxNodeModuleJsDepth: Infinity, checkJs: false, rootDir, rootDirs: [rootDir]};
   const host = new NgccSourcesCompilerHost(fs, options, entryPointPath);
   return makeBundleProgram(fs, isCore, path, 'r3_symbols.js', options, host);
 }
diff --git a/packages/compiler-cli/ngcc/test/rendering/commonjs_rendering_formatter_spec.ts b/packages/compiler-cli/ngcc/test/rendering/commonjs_rendering_formatter_spec.ts
index 567a1e5ff9..8f8b4354ed 100644
--- a/packages/compiler-cli/ngcc/test/rendering/commonjs_rendering_formatter_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/commonjs_rendering_formatter_spec.ts
@@ -30,7 +30,7 @@ runInEachFileSystem(() => {
     beforeEach(() => {
       _ = absoluteFrom;
       PROGRAM = {
-        name: _('/some/file.js'),
+        name: _('/node_modules/test-package/some/file.js'),
         contents: `
 /* A copyright notice */
 require('some-side-effect');
@@ -94,7 +94,7 @@ exports.BadIife = BadIife;`
       };
 
       PROGRAM_DECORATE_HELPER = {
-        name: _('/some/file.js'),
+        name: _('/node_modules/test-package/some/file.js'),
         contents: `
 var tslib_1 = require("tslib");
 /* A copyright notice */
@@ -156,8 +156,8 @@ exports.D = D;
       const referencesRegistry = new NgccReferencesRegistry(host);
       const decorationAnalyses =
           new DecorationAnalyzer(fs, bundle, host, referencesRegistry).analyzeProgram();
-      const switchMarkerAnalyses =
-          new SwitchMarkerAnalyzer(host).analyzeProgram(bundle.src.program);
+      const switchMarkerAnalyses = new SwitchMarkerAnalyzer(host, bundle.entryPoint.package)
+                                       .analyzeProgram(bundle.src.program);
       const renderer = new CommonJsRenderingFormatter(host, false);
       const importManager = new ImportManager(new NoopImportRewriter(), 'i');
       return {
@@ -197,9 +197,21 @@ var i1 = require('@angular/common');`);
         renderer.addExports(
             output, _(PROGRAM.name.replace(/\.js$/, '')),
             [
-              {from: _('/some/a.js'), dtsFrom: _('/some/a.d.ts'), identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), dtsFrom: _('/some/a.d.ts'), identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), dtsFrom: _('/some/foo/b.d.ts'), identifier: 'ComponentB'},
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                dtsFrom: _('/node_modules/test-package/some/a.d.ts'),
+                identifier: 'ComponentA1'
+              },
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                dtsFrom: _('/node_modules/test-package/some/a.d.ts'),
+                identifier: 'ComponentA2'
+              },
+              {
+                from: _('/node_modules/test-package/some/foo/b.js'),
+                dtsFrom: _('/node_modules/test-package/some/foo/b.d.ts'),
+                identifier: 'ComponentB'
+              },
               {from: PROGRAM.name, dtsFrom: PROGRAM.name, identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -222,9 +234,21 @@ exports.TopLevelComponent = TopLevelComponent;`);
         renderer.addExports(
             output, _(PROGRAM.name.replace(/\.js$/, '')),
             [
-              {from: _('/some/a.js'), alias: 'eComponentA1', identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), alias: 'eComponentA2', identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), alias: 'eComponentB', identifier: 'ComponentB'},
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA1',
+                identifier: 'ComponentA1'
+              },
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA2',
+                identifier: 'ComponentA2'
+              },
+              {
+                from: _('/node_modules/test-package/some/foo/b.js'),
+                alias: 'eComponentB',
+                identifier: 'ComponentB'
+              },
               {from: PROGRAM.name, alias: 'eTopLevelComponent', identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -238,7 +262,7 @@ exports.TopLevelComponent = TopLevelComponent;`);
     describe('addConstants', () => {
       it('should insert the given constants after imports in the source file', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addConstants(output, 'var x = 3;', file);
         expect(output.toString()).toContain(`
@@ -250,7 +274,7 @@ var A = (function() {`);
 
       it('should insert constants after inserted imports', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addConstants(output, 'var x = 3;', file);
         renderer.addImports(output, [{specifier: '@angular/core', qualifier: 'i0'}], file);
@@ -266,7 +290,7 @@ var A = (function() {`);
     describe('rewriteSwitchableDeclarations', () => {
       it('should switch marked declaration initializers', () => {
         const {renderer, program, sourceFile, switchMarkerAnalyses} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.rewriteSwitchableDeclarations(
             output, file, switchMarkerAnalyses.get(sourceFile) !.declarations);
@@ -311,14 +335,14 @@ SOME DEFINITION TEXT
         const mockNoIifeClass: any = {declaration: noIifeDeclaration, name: 'NoIife'};
         expect(() => renderer.addDefinitions(output, mockNoIifeClass, 'SOME DEFINITION TEXT'))
             .toThrowError(
-                `Compiled class declaration is not inside an IIFE: NoIife in ${_('/some/file.js')}`);
+                `Compiled class declaration is not inside an IIFE: NoIife in ${_('/node_modules/test-package/some/file.js')}`);
 
         const badIifeDeclaration = getDeclaration(
             program, absoluteFromSourceFile(sourceFile), 'BadIife', ts.isVariableDeclaration);
         const mockBadIifeClass: any = {declaration: badIifeDeclaration, name: 'BadIife'};
         expect(() => renderer.addDefinitions(output, mockBadIifeClass, 'SOME DEFINITION TEXT'))
             .toThrowError(
-                `Compiled class wrapper IIFE does not have a return statement: BadIife in ${_('/some/file.js')}`);
+                `Compiled class wrapper IIFE does not have a return statement: BadIife in ${_('/node_modules/test-package/some/file.js')}`);
       });
     });
 
diff --git a/packages/compiler-cli/ngcc/test/rendering/dts_renderer_spec.ts b/packages/compiler-cli/ngcc/test/rendering/dts_renderer_spec.ts
index 2caf9cf0be..e4651655c8 100644
--- a/packages/compiler-cli/ngcc/test/rendering/dts_renderer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/dts_renderer_spec.ts
@@ -99,7 +99,7 @@ runInEachFileSystem(() => {
     beforeEach(() => {
       _ = absoluteFrom;
       INPUT_PROGRAM = {
-        name: _('/src/file.js'),
+        name: _('/node_modules/test-package/src/file.js'),
         contents:
             `import { Directive } from '@angular/core';\nexport class A {\n    foo(x) {\n        return x;\n    }\n}\nA.decorators = [\n    { type: Directive, args: [{ selector: '[a]' }] }\n];\n`
       };
@@ -139,8 +139,11 @@ runInEachFileSystem(() => {
           createTestRenderer('test-package', [INPUT_PROGRAM], [INPUT_DTS_PROGRAM]);
 
       // Add a mock export to trigger export rendering
-      privateDeclarationsAnalyses.push(
-          {identifier: 'ComponentB', from: _('/src/file.js'), dtsFrom: _('/typings/b.d.ts')});
+      privateDeclarationsAnalyses.push({
+        identifier: 'ComponentB',
+        from: _('/node_modules/test-package/src/file.js'),
+        dtsFrom: _('/typings/b.d.ts')
+      });
 
       const result = renderer.renderProgram(
           decorationAnalyses, privateDeclarationsAnalyses, moduleWithProvidersAnalyses);
diff --git a/packages/compiler-cli/ngcc/test/rendering/esm5_rendering_formatter_spec.ts b/packages/compiler-cli/ngcc/test/rendering/esm5_rendering_formatter_spec.ts
index c92974ad69..4d3a24e5d5 100644
--- a/packages/compiler-cli/ngcc/test/rendering/esm5_rendering_formatter_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/esm5_rendering_formatter_spec.ts
@@ -32,7 +32,8 @@ function setup(file: {name: AbsoluteFsPath, contents: string}) {
   const referencesRegistry = new NgccReferencesRegistry(host);
   const decorationAnalyses =
       new DecorationAnalyzer(fs, bundle, host, referencesRegistry).analyzeProgram();
-  const switchMarkerAnalyses = new SwitchMarkerAnalyzer(host).analyzeProgram(bundle.src.program);
+  const switchMarkerAnalyses =
+      new SwitchMarkerAnalyzer(host, bundle.entryPoint.package).analyzeProgram(bundle.src.program);
   const renderer = new Esm5RenderingFormatter(host, false);
   const importManager = new ImportManager(new NoopImportRewriter(), IMPORT_PREFIX);
   return {
@@ -52,7 +53,7 @@ runInEachFileSystem(() => {
     beforeEach(() => {
       _ = absoluteFrom;
       PROGRAM = {
-        name: _('/some/file.js'),
+        name: _('/node_modules/test-package/some/file.js'),
         contents: `
 /* A copyright notice */
 import 'some-side-effect';
@@ -112,7 +113,7 @@ export {A, B, C, NoIife, BadIife};`
       };
 
       PROGRAM_DECORATE_HELPER = {
-        name: _('/some/file.js'),
+        name: _('/node_modules/test-package/some/file.js'),
         contents: `
 import * as tslib_1 from "tslib";
 /* A copyright notice */
@@ -189,9 +190,21 @@ import * as i1 from '@angular/common';`);
         renderer.addExports(
             output, _(PROGRAM.name.replace(/\.js$/, '')),
             [
-              {from: _('/some/a.js'), dtsFrom: _('/some/a.d.ts'), identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), dtsFrom: _('/some/a.d.ts'), identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), dtsFrom: _('/some/foo/b.d.ts'), identifier: 'ComponentB'},
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                dtsFrom: _('/node_modules/test-package/some/a.d.ts'),
+                identifier: 'ComponentA1'
+              },
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                dtsFrom: _('/node_modules/test-package/some/a.d.ts'),
+                identifier: 'ComponentA2'
+              },
+              {
+                from: _('/node_modules/test-package/some/foo/b.js'),
+                dtsFrom: _('/node_modules/test-package/some/foo/b.d.ts'),
+                identifier: 'ComponentB'
+              },
               {from: PROGRAM.name, dtsFrom: PROGRAM.name, identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -209,9 +222,21 @@ export {TopLevelComponent};`);
         renderer.addExports(
             output, _(PROGRAM.name.replace(/\.js$/, '')),
             [
-              {from: _('/some/a.js'), alias: 'eComponentA1', identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), alias: 'eComponentA2', identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), alias: 'eComponentB', identifier: 'ComponentB'},
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA1',
+                identifier: 'ComponentA1'
+              },
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA2',
+                identifier: 'ComponentA2'
+              },
+              {
+                from: _('/node_modules/test-package/some/foo/b.js'),
+                alias: 'eComponentB',
+                identifier: 'ComponentB'
+              },
               {from: PROGRAM.name, alias: 'eTopLevelComponent', identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -225,7 +250,7 @@ export {TopLevelComponent};`);
     describe('addConstants', () => {
       it('should insert the given constants after imports in the source file', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addConstants(output, 'var x = 3;', file);
         expect(output.toString()).toContain(`
@@ -237,7 +262,7 @@ var A = (function() {`);
 
       it('should insert constants after inserted imports', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addConstants(output, 'var x = 3;', file);
         renderer.addImports(output, [{specifier: '@angular/core', qualifier: 'i0'}], file);
@@ -253,7 +278,7 @@ var A = (function() {`);
     describe('rewriteSwitchableDeclarations', () => {
       it('should switch marked declaration initializers', () => {
         const {renderer, program, sourceFile, switchMarkerAnalyses} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.rewriteSwitchableDeclarations(
             output, file, switchMarkerAnalyses.get(sourceFile) !.declarations);
@@ -298,14 +323,14 @@ SOME DEFINITION TEXT
         const mockNoIifeClass: any = {declaration: noIifeDeclaration, name: 'NoIife'};
         expect(() => renderer.addDefinitions(output, mockNoIifeClass, 'SOME DEFINITION TEXT'))
             .toThrowError(
-                `Compiled class declaration is not inside an IIFE: NoIife in ${_('/some/file.js')}`);
+                `Compiled class declaration is not inside an IIFE: NoIife in ${_('/node_modules/test-package/some/file.js')}`);
 
         const badIifeDeclaration = getDeclaration(
             program, absoluteFromSourceFile(sourceFile), 'BadIife', ts.isVariableDeclaration);
         const mockBadIifeClass: any = {declaration: badIifeDeclaration, name: 'BadIife'};
         expect(() => renderer.addDefinitions(output, mockBadIifeClass, 'SOME DEFINITION TEXT'))
             .toThrowError(
-                `Compiled class wrapper IIFE does not have a return statement: BadIife in ${_('/some/file.js')}`);
+                `Compiled class wrapper IIFE does not have a return statement: BadIife in ${_('/node_modules/test-package/some/file.js')}`);
       });
     });
 
diff --git a/packages/compiler-cli/ngcc/test/rendering/esm_rendering_formatter_spec.ts b/packages/compiler-cli/ngcc/test/rendering/esm_rendering_formatter_spec.ts
index 2c52e002ea..5bd6bcaac8 100644
--- a/packages/compiler-cli/ngcc/test/rendering/esm_rendering_formatter_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/esm_rendering_formatter_spec.ts
@@ -9,7 +9,7 @@ import MagicString from 'magic-string';
 import * as ts from 'typescript';
 import {NoopImportRewriter} from '../../../src/ngtsc/imports';
 import {absoluteFrom, getFileSystem, getSourceFileOrError} from '../../../src/ngtsc/file_system';
-import {loadTestFiles} from '../../../test/helpers';
+import {loadTestFiles, loadFakeCore} from '../../../test/helpers';
 import {TestFile, runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
 import {ImportManager} from '../../../src/ngtsc/translator';
 import {DecorationAnalyzer} from '../../src/analysis/decoration_analyzer';
@@ -23,11 +23,12 @@ import {MockLogger} from '../helpers/mock_logger';
 import {ModuleWithProvidersAnalyzer} from '../../src/analysis/module_with_providers_analyzer';
 
 function setup(files: TestFile[], dtsFiles?: TestFile[]) {
+  const fs = getFileSystem();
+  loadFakeCore(fs);
   loadTestFiles(files);
   if (dtsFiles) {
     loadTestFiles(dtsFiles);
   }
-  const fs = getFileSystem();
   const logger = new MockLogger();
   const bundle = makeTestEntryPointBundle(
       'test-package', 'es2015', 'esm2015', false, getRootFiles(files),
@@ -37,7 +38,8 @@ function setup(files: TestFile[], dtsFiles?: TestFile[]) {
   const referencesRegistry = new NgccReferencesRegistry(host);
   const decorationAnalyses =
       new DecorationAnalyzer(fs, bundle, host, referencesRegistry).analyzeProgram();
-  const switchMarkerAnalyses = new SwitchMarkerAnalyzer(host).analyzeProgram(bundle.src.program);
+  const switchMarkerAnalyses =
+      new SwitchMarkerAnalyzer(host, bundle.entryPoint.package).analyzeProgram(bundle.src.program);
   const renderer = new EsmRenderingFormatter(host, false);
   const importManager = new ImportManager(new NoopImportRewriter(), IMPORT_PREFIX);
   return {
@@ -58,7 +60,7 @@ runInEachFileSystem(() => {
       _ = absoluteFrom;
 
       PROGRAM = {
-        name: _('/some/file.js'),
+        name: _('/node_modules/test-package/some/file.js'),
         contents: `
 /* A copyright notice */
 import 'some-side-effect';
@@ -120,9 +122,21 @@ import * as i1 from '@angular/common';`);
         renderer.addExports(
             output, _(PROGRAM.name.replace(/\.js$/, '')),
             [
-              {from: _('/some/a.js'), dtsFrom: _('/some/a.d.ts'), identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), dtsFrom: _('/some/a.d.ts'), identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), dtsFrom: _('/some/foo/b.d.ts'), identifier: 'ComponentB'},
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                dtsFrom: _('/node_modules/test-package/some/a.d.ts'),
+                identifier: 'ComponentA1'
+              },
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                dtsFrom: _('/node_modules/test-package/some/a.d.ts'),
+                identifier: 'ComponentA2'
+              },
+              {
+                from: _('/node_modules/test-package/some/foo/b.js'),
+                dtsFrom: _('/node_modules/test-package/some/foo/b.d.ts'),
+                identifier: 'ComponentB'
+              },
               {from: PROGRAM.name, dtsFrom: PROGRAM.name, identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -140,9 +154,21 @@ export {TopLevelComponent};`);
         renderer.addExports(
             output, _(PROGRAM.name.replace(/\.js$/, '')),
             [
-              {from: _('/some/a.js'), alias: 'eComponentA1', identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), alias: 'eComponentA2', identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), alias: 'eComponentB', identifier: 'ComponentB'},
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA1',
+                identifier: 'ComponentA1'
+              },
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA2',
+                identifier: 'ComponentA2'
+              },
+              {
+                from: _('/node_modules/test-package/some/foo/b.js'),
+                alias: 'eComponentB',
+                identifier: 'ComponentB'
+              },
               {from: PROGRAM.name, alias: 'eTopLevelComponent', identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -156,7 +182,7 @@ export {TopLevelComponent};`);
     describe('addConstants', () => {
       it('should insert the given constants after imports in the source file', () => {
         const {renderer, program} = setup([PROGRAM]);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addConstants(output, 'const x = 3;', file);
         expect(output.toString()).toContain(`
@@ -168,7 +194,7 @@ export class A {}`);
 
       it('should insert constants after inserted imports', () => {
         const {renderer, program} = setup([PROGRAM]);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addConstants(output, 'const x = 3;', file);
         renderer.addImports(output, [{specifier: '@angular/core', qualifier: 'i0'}], file);
@@ -184,7 +210,7 @@ export class A {`);
     describe('rewriteSwitchableDeclarations', () => {
       it('should switch marked declaration initializers', () => {
         const {renderer, program, switchMarkerAnalyses, sourceFile} = setup([PROGRAM]);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.rewriteSwitchableDeclarations(
             output, file, switchMarkerAnalyses.get(sourceFile) !.declarations);
@@ -292,7 +318,7 @@ A.decorators = [
 
       beforeEach(() => {
         PROGRAM_DECORATE_HELPER = {
-          name: _('/some/file.js'),
+          name: _('/node_modules/test-package/some/file.js'),
           contents: `
 import * as tslib_1 from "tslib";
 var D_1;
diff --git a/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts b/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts
index be77626357..adf8b57d0f 100644
--- a/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts
@@ -69,7 +69,8 @@ function createTestRenderer(
   const referencesRegistry = new NgccReferencesRegistry(host);
   const decorationAnalyses =
       new DecorationAnalyzer(fs, bundle, host, referencesRegistry).analyzeProgram();
-  const switchMarkerAnalyses = new SwitchMarkerAnalyzer(host).analyzeProgram(bundle.src.program);
+  const switchMarkerAnalyses =
+      new SwitchMarkerAnalyzer(host, bundle.entryPoint.package).analyzeProgram(bundle.src.program);
   const privateDeclarationsAnalyses =
       new PrivateDeclarationsAnalyzer(host, referencesRegistry).analyzeProgram(bundle.src.program);
   const testFormatter = new TestRenderingFormatter();
@@ -105,22 +106,22 @@ runInEachFileSystem(() => {
       _ = absoluteFrom;
 
       INPUT_PROGRAM = {
-        name: _('/src/file.js'),
+        name: _('/node_modules/test-package/src/file.js'),
         contents:
             `import { Directive } from '@angular/core';\nexport class A {\n    foo(x) {\n        return x;\n    }\n}\nA.decorators = [\n    { type: Directive, args: [{ selector: '[a]' }] }\n];\n`
       };
 
       COMPONENT_PROGRAM = {
-        name: _('/src/component.js'),
+        name: _('/node_modules/test-package/src/component.js'),
         contents:
             `import { Component } from '@angular/core';\nexport class A {}\nA.decorators = [\n    { type: Component, args: [{ selector: 'a', template: '{{ person!.name }}' }] }\n];\n`
       };
 
       INPUT_PROGRAM_MAP = fromObject({
         'version': 3,
-        'file': _('/src/file.js'),
+        'file': _('/node_modules/test-package/src/file.js'),
         'sourceRoot': '',
-        'sources': [_('/src/file.ts')],
+        'sources': [_('/node_modules/test-package/src/file.ts')],
         'names': [],
         'mappings':
             'AAAA,OAAO,EAAE,SAAS,EAAE,MAAM,eAAe,CAAC;AAC1C,MAAM;IACF,GAAG,CAAC,CAAS;QACT,OAAO,CAAC,CAAC;IACb,CAAC;;AACM,YAAU,GAAG;IAChB,EAAE,IAAI,EAAE,SAAS,EAAE,IAAI,EAAE,CAAC,EAAE,QAAQ,EAAE,KAAK,EAAE,CAAC,EAAE;CACnD,CAAC',
@@ -142,7 +143,7 @@ runInEachFileSystem(() => {
       OUTPUT_PROGRAM_MAP = fromObject({
         'version': 3,
         'file': 'file.js',
-        'sources': [_('/src/file.js')],
+        'sources': [_('/node_modules/test-package/src/file.js')],
         'sourcesContent': [INPUT_PROGRAM.contents],
         'names': [],
         'mappings': ';;;;;;;;;;AAAA;;;;;;;;;'
@@ -150,7 +151,7 @@ runInEachFileSystem(() => {
 
       MERGED_OUTPUT_PROGRAM_MAP = fromObject({
         'version': 3,
-        'sources': [_('/src/file.ts')],
+        'sources': [_('/node_modules/test-package/src/file.ts')],
         'names': [],
         'mappings': ';;;;;;;;;;AAAA',
         'file': 'file.js',
@@ -165,10 +166,10 @@ runInEachFileSystem(() => {
                createTestRenderer('test-package', [INPUT_PROGRAM]);
            const result = renderer.renderProgram(
                decorationAnalyses, switchMarkerAnalyses, privateDeclarationsAnalyses);
-           expect(result[0].path).toEqual(_('/src/file.js'));
+           expect(result[0].path).toEqual(_('/node_modules/test-package/src/file.js'));
            expect(result[0].contents)
                .toEqual(RENDERED_CONTENTS + '\n' + generateMapFileComment('file.js.map'));
-           expect(result[1].path).toEqual(_('/src/file.js.map'));
+           expect(result[1].path).toEqual(_('/node_modules/test-package/src/file.js.map'));
            expect(result[1].contents).toEqual(OUTPUT_PROGRAM_MAP.toJSON());
          });
 
@@ -254,9 +255,10 @@ runInEachFileSystem(() => {
 
         it('should render classes without decorators if handler matches', () => {
           const {renderer, decorationAnalyses, switchMarkerAnalyses, privateDeclarationsAnalyses,
-                 testFormatter} = createTestRenderer('test-package', [{
-                                                       name: _('/src/file.js'),
-                                                       contents: `
+                 testFormatter} =
+              createTestRenderer('test-package', [{
+                                   name: _('/node_modules/test-package/src/file.js'),
+                                   contents: `
                   import { Directive, ViewChild } from '@angular/core';
 
                   export class UndecoratedBase { test = null; }
@@ -268,7 +270,7 @@ runInEachFileSystem(() => {
                     }],
                   };
                 `
-                                                     }]);
+                                 }]);
 
           renderer.renderProgram(
               decorationAnalyses, switchMarkerAnalyses, privateDeclarationsAnalyses);
@@ -312,7 +314,7 @@ runInEachFileSystem(() => {
                      }]);
              const result = renderer.renderProgram(
                  decorationAnalyses, switchMarkerAnalyses, privateDeclarationsAnalyses);
-             expect(result[0].path).toEqual(_('/src/file.js'));
+             expect(result[0].path).toEqual(_('/node_modules/test-package/src/file.js'));
              expect(result[0].contents)
                  .toEqual(RENDERED_CONTENTS + '\n' + MERGED_OUTPUT_PROGRAM_MAP.toComment());
              expect(result[1]).toBeUndefined();
@@ -331,10 +333,10 @@ runInEachFileSystem(() => {
                  createTestRenderer('test-package', sourceFiles, undefined, mappingFiles);
              const result = renderer.renderProgram(
                  decorationAnalyses, switchMarkerAnalyses, privateDeclarationsAnalyses);
-             expect(result[0].path).toEqual(_('/src/file.js'));
+             expect(result[0].path).toEqual(_('/node_modules/test-package/src/file.js'));
              expect(result[0].contents)
                  .toEqual(RENDERED_CONTENTS + '\n' + generateMapFileComment('file.js.map'));
-             expect(result[1].path).toEqual(_('/src/file.js.map'));
+             expect(result[1].path).toEqual(_('/node_modules/test-package/src/file.js.map'));
              expect(JSON.parse(result[1].contents)).toEqual(MERGED_OUTPUT_PROGRAM_MAP.toObject());
            });
       });
@@ -342,14 +344,14 @@ runInEachFileSystem(() => {
       describe('@angular/core support', () => {
         it('should render relative imports in ESM bundles', () => {
           const CORE_FILE: TestFile = {
-            name: _('/src/core.js'),
+            name: _('/node_modules/test-package/src/core.js'),
             contents:
                 `import { NgModule } from './ng_module';\nexport class MyModule {}\nMyModule.decorators = [\n    { type: NgModule, args: [] }\n];\n`
           };
           const R3_SYMBOLS_FILE: TestFile = {
             // r3_symbols in the file name indicates that this is the path to rewrite core imports
             // to
-            name: _('/src/r3_symbols.js'),
+            name: _('/node_modules/test-package/src/r3_symbols.js'),
             contents: `export const NgModule = () => null;`
           };
           // The package name of `@angular/core` indicates that we are compiling the core library.
@@ -368,7 +370,7 @@ runInEachFileSystem(() => {
 
         it('should render no imports in FESM bundles', () => {
           const CORE_FILE: TestFile = {
-            name: _('/src/core.js'),
+            name: _('/node_modules/test-package/src/core.js'),
             contents: `export const NgModule = () => null;
             export class MyModule {}\nMyModule.decorators = [\n    { type: NgModule, args: [] }\n];\n`
           };
diff --git a/packages/compiler-cli/ngcc/test/rendering/umd_rendering_formatter_spec.ts b/packages/compiler-cli/ngcc/test/rendering/umd_rendering_formatter_spec.ts
index 1286f9a081..a6065b229c 100644
--- a/packages/compiler-cli/ngcc/test/rendering/umd_rendering_formatter_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/umd_rendering_formatter_spec.ts
@@ -31,7 +31,8 @@ function setup(file: TestFile) {
   const referencesRegistry = new NgccReferencesRegistry(host);
   const decorationAnalyses =
       new DecorationAnalyzer(fs, bundle, host, referencesRegistry).analyzeProgram();
-  const switchMarkerAnalyses = new SwitchMarkerAnalyzer(host).analyzeProgram(src.program);
+  const switchMarkerAnalyses =
+      new SwitchMarkerAnalyzer(host, bundle.entryPoint.package).analyzeProgram(src.program);
   const renderer = new UmdRenderingFormatter(host, false);
   const importManager = new ImportManager(new NoopImportRewriter(), 'i');
   return {
@@ -54,7 +55,7 @@ runInEachFileSystem(() => {
       _ = absoluteFrom;
 
       PROGRAM = {
-        name: _('/some/file.js'),
+        name: _('/node_modules/test-package/some/file.js'),
         contents: `
 /* A copyright notice */
 (function (global, factory) {
@@ -123,7 +124,7 @@ exports.BadIife = BadIife;
 
 
       PROGRAM_DECORATE_HELPER = {
-        name: _('/some/file.js'),
+        name: _('/node_modules/test-package/some/file.js'),
         contents: `
 /* A copyright notice */
 (function (global, factory) {
@@ -181,7 +182,7 @@ typeof define === 'function' && define.amd ? define('file', ['exports','/tslib',
     describe('addImports', () => {
       it('should append the given imports into the CommonJS factory call', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addImports(
             output,
@@ -197,7 +198,7 @@ typeof define === 'function' && define.amd ? define('file', ['exports','/tslib',
 
       it('should append the given imports into the AMD initialization', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addImports(
             output,
@@ -213,7 +214,7 @@ typeof define === 'function' && define.amd ? define('file', ['exports','/tslib',
 
       it('should append the given imports into the global initialization', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addImports(
             output,
@@ -230,7 +231,7 @@ typeof define === 'function' && define.amd ? define('file', ['exports','/tslib',
       it('should append the given imports as parameters into the factory function definition',
          () => {
            const {renderer, program} = setup(PROGRAM);
-           const file = getSourceFileOrError(program, _('/some/file.js'));
+           const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
            const output = new MagicString(PROGRAM.contents);
            renderer.addImports(
                output,
@@ -253,9 +254,9 @@ typeof define === 'function' && define.amd ? define('file', ['exports','/tslib',
         renderer.addExports(
             output, PROGRAM.name.replace(/\.js$/, ''),
             [
-              {from: _('/some/a.js'), identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), identifier: 'ComponentB'},
+              {from: _('/node_modules/test-package/some/a.js'), identifier: 'ComponentA1'},
+              {from: _('/node_modules/test-package/some/a.js'), identifier: 'ComponentA2'},
+              {from: _('/node_modules/test-package/some/foo/b.js'), identifier: 'ComponentB'},
               {from: PROGRAM.name, identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -283,9 +284,21 @@ exports.TopLevelComponent = TopLevelComponent;
         renderer.addExports(
             output, PROGRAM.name.replace(/\.js$/, ''),
             [
-              {from: _('/some/a.js'), alias: 'eComponentA1', identifier: 'ComponentA1'},
-              {from: _('/some/a.js'), alias: 'eComponentA2', identifier: 'ComponentA2'},
-              {from: _('/some/foo/b.js'), alias: 'eComponentB', identifier: 'ComponentB'},
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA1',
+                identifier: 'ComponentA1'
+              },
+              {
+                from: _('/node_modules/test-package/some/a.js'),
+                alias: 'eComponentA2',
+                identifier: 'ComponentA2'
+              },
+              {
+                from: _('/node_modules/test-package/some/foo/b.js'),
+                alias: 'eComponentB',
+                identifier: 'ComponentB'
+              },
               {from: PROGRAM.name, alias: 'eTopLevelComponent', identifier: 'TopLevelComponent'},
             ],
             importManager, sourceFile);
@@ -299,7 +312,7 @@ exports.TopLevelComponent = TopLevelComponent;
     describe('addConstants', () => {
       it('should insert the given constants after imports in the source file', () => {
         const {renderer, program} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.addConstants(output, 'var x = 3;', file);
         expect(output.toString()).toContain(`
@@ -319,7 +332,7 @@ var A = (function() {`);
     describe('rewriteSwitchableDeclarations', () => {
       it('should switch marked declaration initializers', () => {
         const {renderer, program, sourceFile, switchMarkerAnalyses} = setup(PROGRAM);
-        const file = getSourceFileOrError(program, _('/some/file.js'));
+        const file = getSourceFileOrError(program, _('/node_modules/test-package/some/file.js'));
         const output = new MagicString(PROGRAM.contents);
         renderer.rewriteSwitchableDeclarations(
             output, file, switchMarkerAnalyses.get(sourceFile) !.declarations);
@@ -364,14 +377,14 @@ SOME DEFINITION TEXT
         const mockNoIifeClass: any = {declaration: noIifeDeclaration, name: 'NoIife'};
         expect(() => renderer.addDefinitions(output, mockNoIifeClass, 'SOME DEFINITION TEXT'))
             .toThrowError(
-                `Compiled class declaration is not inside an IIFE: NoIife in ${_('/some/file.js')}`);
+                `Compiled class declaration is not inside an IIFE: NoIife in ${_('/node_modules/test-package/some/file.js')}`);
 
         const badIifeDeclaration = getDeclaration(
             program, absoluteFromSourceFile(sourceFile), 'BadIife', ts.isVariableDeclaration);
         const mockBadIifeClass: any = {declaration: badIifeDeclaration, name: 'BadIife'};
         expect(() => renderer.addDefinitions(output, mockBadIifeClass, 'SOME DEFINITION TEXT'))
             .toThrowError(
-                `Compiled class wrapper IIFE does not have a return statement: BadIife in ${_('/some/file.js')}`);
+                `Compiled class wrapper IIFE does not have a return statement: BadIife in ${_('/node_modules/test-package/some/file.js')}`);
       });
     });