diff --git a/packages/compiler/src/aot/compiler_factory.ts b/packages/compiler/src/aot/compiler_factory.ts
index 795d2530cf..eeccffff68 100644
--- a/packages/compiler/src/aot/compiler_factory.ts
+++ b/packages/compiler/src/aot/compiler_factory.ts
@@ -7,7 +7,7 @@
  */
 
 import {CompilerConfig} from '../config';
-import {MissingTranslationStrategy, ViewEncapsulation} from '../core';
+import {ViewEncapsulation} from '../core';
 import {DirectiveNormalizer} from '../directive_normalizer';
 import {DirectiveResolver} from '../directive_resolver';
 import {Lexer} from '../expression_parser/lexer';
@@ -32,7 +32,7 @@ import {AotCompiler} from './compiler';
 import {AotCompilerHost} from './compiler_host';
 import {AotCompilerOptions} from './compiler_options';
 import {StaticReflector} from './static_reflector';
-import {StaticSymbol, StaticSymbolCache} from './static_symbol';
+import {StaticSymbolCache} from './static_symbol';
 import {StaticSymbolResolver} from './static_symbol_resolver';
 import {AotSummaryResolver} from './summary_resolver';
 
diff --git a/packages/compiler/src/aot/lazy_routes.ts b/packages/compiler/src/aot/lazy_routes.ts
index 4b049e41c7..4dba3b4ba9 100644
--- a/packages/compiler/src/aot/lazy_routes.ts
+++ b/packages/compiler/src/aot/lazy_routes.ts
@@ -8,9 +8,7 @@
 
 import {CompileNgModuleMetadata, tokenReference} from '../compile_metadata';
 import {Route} from '../core';
-import {CompileMetadataResolver} from '../metadata_resolver';
 
-import {AotCompilerHost} from './compiler_host';
 import {StaticReflector} from './static_reflector';
 import {StaticSymbol} from './static_symbol';
 
diff --git a/packages/compiler/src/config.ts b/packages/compiler/src/config.ts
index 599f95995e..bb651366cd 100644
--- a/packages/compiler/src/config.ts
+++ b/packages/compiler/src/config.ts
@@ -6,10 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {CompileIdentifierMetadata} from './compile_metadata';
 import {MissingTranslationStrategy, ViewEncapsulation} from './core';
-import {Identifiers} from './identifiers';
-import * as o from './output/output_ast';
 import {noUndefined} from './util';
 
 export class CompilerConfig {
diff --git a/packages/compiler/src/output/ts_emitter.ts b/packages/compiler/src/output/ts_emitter.ts
index 180d39b7a9..968e0ea42f 100644
--- a/packages/compiler/src/output/ts_emitter.ts
+++ b/packages/compiler/src/output/ts_emitter.ts
@@ -6,15 +6,9 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-
-import {StaticSymbol} from '../aot/static_symbol';
-import {CompileIdentifierMetadata} from '../compile_metadata';
-
 import {AbstractEmitterVisitor, CATCH_ERROR_VAR, CATCH_STACK_VAR, EmitterVisitorContext, OutputEmitter} from './abstract_emitter';
 import * as o from './output_ast';
 
-const _debugFilePath = '/debug/lib';
-
 export function debugOutputAstAsTypeScript(ast: o.Statement|o.Expression|o.Type|any[]): string {
   const converter = new _TsEmitterVisitor();
   const ctx = EmitterVisitorContext.createRoot();
diff --git a/packages/compiler/src/render3/view/t2_binder.ts b/packages/compiler/src/render3/view/t2_binder.ts
index c0be8cac52..3523072295 100644
--- a/packages/compiler/src/render3/view/t2_binder.ts
+++ b/packages/compiler/src/render3/view/t2_binder.ts
@@ -7,7 +7,7 @@
  */
 
 import {AST, BindingPipe, ImplicitReceiver, MethodCall, PropertyRead, PropertyWrite, RecursiveAstVisitor, SafeMethodCall, SafePropertyRead} from '../../expression_parser/ast';
-import {CssSelector, SelectorMatcher} from '../../selector';
+import {SelectorMatcher} from '../../selector';
 import {BoundAttribute, BoundEvent, BoundText, Content, Element, Icu, Node, Reference, Template, Text, TextAttribute, Variable, Visitor} from '../r3_ast';
 
 import {BoundTarget, DirectiveMeta, Target, TargetBinder} from './t2_api';