diff --git a/packages/compiler-cli/ngcc/src/main.ts b/packages/compiler-cli/ngcc/src/main.ts
index 35cec79ba7..24967430da 100644
--- a/packages/compiler-cli/ngcc/src/main.ts
+++ b/packages/compiler-cli/ngcc/src/main.ts
@@ -73,7 +73,7 @@ export function mainNgcc({basePath, targetEntryPointPath,
                           propertiesToConsider = SUPPORTED_FORMAT_PROPERTIES,
                           compileAllFormats = true, createNewEntryPointFormats = false,
                           logger = new ConsoleLogger(LogLevel.info)}: NgccOptions): void {
-  const transformer = new Transformer(logger, basePath);
+  const transformer = new Transformer(logger);
   const host = new DependencyHost();
   const resolver = new DependencyResolver(logger, host);
   const finder = new EntryPointFinder(logger, resolver);
diff --git a/packages/compiler-cli/ngcc/src/packages/transformer.ts b/packages/compiler-cli/ngcc/src/packages/transformer.ts
index f4a9e76753..3ca19262bf 100644
--- a/packages/compiler-cli/ngcc/src/packages/transformer.ts
+++ b/packages/compiler-cli/ngcc/src/packages/transformer.ts
@@ -46,7 +46,7 @@ import {EntryPointBundle} from './entry_point_bundle';
  * - Some formats may contain multiple "modules" in a single file.
  */
 export class Transformer {
-  constructor(private logger: Logger, private sourcePath: string) {}
+  constructor(private logger: Logger) {}
 
   /**
    * Transform the source (and typings) files of a bundle.
@@ -85,9 +85,9 @@ export class Transformer {
   getRenderer(host: NgccReflectionHost, isCore: boolean, bundle: EntryPointBundle): Renderer {
     switch (bundle.format) {
       case 'esm2015':
-        return new EsmRenderer(this.logger, host, isCore, bundle, this.sourcePath);
+        return new EsmRenderer(this.logger, host, isCore, bundle);
       case 'esm5':
-        return new Esm5Renderer(this.logger, host, isCore, bundle, this.sourcePath);
+        return new Esm5Renderer(this.logger, host, isCore, bundle);
       default:
         throw new Error(`Renderer for "${bundle.format}" not yet implemented.`);
     }
diff --git a/packages/compiler-cli/ngcc/src/rendering/esm5_renderer.ts b/packages/compiler-cli/ngcc/src/rendering/esm5_renderer.ts
index 9268fef45b..7158b250a1 100644
--- a/packages/compiler-cli/ngcc/src/rendering/esm5_renderer.ts
+++ b/packages/compiler-cli/ngcc/src/rendering/esm5_renderer.ts
@@ -15,10 +15,8 @@ import {EntryPointBundle} from '../packages/entry_point_bundle';
 import {Logger} from '../logging/logger';
 
 export class Esm5Renderer extends EsmRenderer {
-  constructor(
-      logger: Logger, host: NgccReflectionHost, isCore: boolean, bundle: EntryPointBundle,
-      sourcePath: string) {
-    super(logger, host, isCore, bundle, sourcePath);
+  constructor(logger: Logger, host: NgccReflectionHost, isCore: boolean, bundle: EntryPointBundle) {
+    super(logger, host, isCore, bundle);
   }
 
   /**
diff --git a/packages/compiler-cli/ngcc/src/rendering/esm_renderer.ts b/packages/compiler-cli/ngcc/src/rendering/esm_renderer.ts
index 8e6b4f2f10..04a3b928f9 100644
--- a/packages/compiler-cli/ngcc/src/rendering/esm_renderer.ts
+++ b/packages/compiler-cli/ngcc/src/rendering/esm_renderer.ts
@@ -17,10 +17,8 @@ import {isDtsPath} from '../../../src/ngtsc/util/src/typescript';
 import {Logger} from '../logging/logger';
 
 export class EsmRenderer extends Renderer {
-  constructor(
-      logger: Logger, host: NgccReflectionHost, isCore: boolean, bundle: EntryPointBundle,
-      sourcePath: string) {
-    super(logger, host, isCore, bundle, sourcePath);
+  constructor(logger: Logger, host: NgccReflectionHost, isCore: boolean, bundle: EntryPointBundle) {
+    super(logger, host, isCore, bundle);
   }
 
   /**
diff --git a/packages/compiler-cli/ngcc/src/rendering/renderer.ts b/packages/compiler-cli/ngcc/src/rendering/renderer.ts
index 39d0a9caa1..b6016a2ce6 100644
--- a/packages/compiler-cli/ngcc/src/rendering/renderer.ts
+++ b/packages/compiler-cli/ngcc/src/rendering/renderer.ts
@@ -82,7 +82,7 @@ export const RedundantDecoratorMap = Map;
 export abstract class Renderer {
   constructor(
       protected logger: Logger, protected host: NgccReflectionHost, protected isCore: boolean,
-      protected bundle: EntryPointBundle, protected sourcePath: string) {}
+      protected bundle: EntryPointBundle) {}
 
   renderProgram(
       decorationAnalyses: DecorationAnalyses, switchMarkerAnalyses: SwitchMarkerAnalyses,
diff --git a/packages/compiler-cli/ngcc/test/rendering/esm2015_renderer_spec.ts b/packages/compiler-cli/ngcc/test/rendering/esm2015_renderer_spec.ts
index d36d5838f6..c28d25edb0 100644
--- a/packages/compiler-cli/ngcc/test/rendering/esm2015_renderer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/esm2015_renderer_spec.ts
@@ -19,7 +19,6 @@ import {MockLogger} from '../helpers/mock_logger';
 
 function setup(file: {name: string, contents: string}) {
   const logger = new MockLogger();
-  const dir = dirname(file.name);
   const bundle = makeTestEntryPointBundle('es2015', 'esm2015', false, [file]) !;
   const typeChecker = bundle.src.program.getTypeChecker();
   const host = new Esm2015ReflectionHost(logger, false, typeChecker);
@@ -30,7 +29,7 @@ function setup(file: {name: string, contents: string}) {
           referencesRegistry, [AbsoluteFsPath.fromUnchecked('/')], false)
           .analyzeProgram();
   const switchMarkerAnalyses = new SwitchMarkerAnalyzer(host).analyzeProgram(bundle.src.program);
-  const renderer = new EsmRenderer(logger, host, false, bundle, dir);
+  const renderer = new EsmRenderer(logger, host, false, bundle);
   return {
     host,
     program: bundle.src.program,
diff --git a/packages/compiler-cli/ngcc/test/rendering/esm5_renderer_spec.ts b/packages/compiler-cli/ngcc/test/rendering/esm5_renderer_spec.ts
index a7d7c17614..8e6e058633 100644
--- a/packages/compiler-cli/ngcc/test/rendering/esm5_renderer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/esm5_renderer_spec.ts
@@ -19,7 +19,6 @@ import {MockLogger} from '../helpers/mock_logger';
 
 function setup(file: {name: string, contents: string}) {
   const logger = new MockLogger();
-  const dir = dirname(file.name);
   const bundle = makeTestEntryPointBundle('module', 'esm5', false, [file]);
   const typeChecker = bundle.src.program.getTypeChecker();
   const host = new Esm5ReflectionHost(logger, false, typeChecker);
@@ -30,7 +29,7 @@ function setup(file: {name: string, contents: string}) {
           referencesRegistry, [AbsoluteFsPath.fromUnchecked('/')], false)
           .analyzeProgram();
   const switchMarkerAnalyses = new SwitchMarkerAnalyzer(host).analyzeProgram(bundle.src.program);
-  const renderer = new Esm5Renderer(logger, host, false, bundle, dir);
+  const renderer = new Esm5Renderer(logger, host, false, bundle);
   return {
     host,
     program: bundle.src.program,
diff --git a/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts b/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts
index cea122f6af..1e9e3bd387 100644
--- a/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts
+++ b/packages/compiler-cli/ngcc/test/rendering/renderer_spec.ts
@@ -24,7 +24,7 @@ import {MockLogger} from '../helpers/mock_logger';
 class TestRenderer extends Renderer {
   constructor(
       logger: Logger, host: Esm2015ReflectionHost, isCore: boolean, bundle: EntryPointBundle) {
-    super(logger, host, isCore, bundle, '/src');
+    super(logger, host, isCore, bundle);
   }
   addImports(
       output: MagicString, imports: {specifier: string, qualifier: string}[], sf: ts.SourceFile) {