diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f253fd1273a..d20804da966b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,6 @@
 
 ### Bug Fixes
 
-* **build:** material not working with ES2015 ([#13709](https://github.com/angular/material2/issues/13709)) ([e9103a6](https://github.com/angular/material2/commit/e9103a6)), closes [#12760](https://github.com/angular/material2/issues/12760) [#13695](https://github.com/angular/material2/issues/13695)
 * **button-toggle:** webkit tap highlight conflicting with ripples ([#13721](https://github.com/angular/material2/issues/13721)) ([abd0278](https://github.com/angular/material2/commit/abd0278))
 * **cdk-platform:** pass `{}` to `@NgModule` since passing nothing breaks ([#13792](https://github.com/angular/material2/issues/13792)) ([5abb644](https://github.com/angular/material2/commit/5abb644))
 * **checkbox:** disabled property not being coerced ([#13755](https://github.com/angular/material2/issues/13755)) ([cee8c65](https://github.com/angular/material2/commit/cee8c65)), closes [#13739](https://github.com/angular/material2/issues/13739)
diff --git a/src/lib/core/constructor-metadata-inherit.ts b/src/lib/core/constructor-metadata-inherit.ts
new file mode 100644
index 000000000000..bff340ed1888
--- /dev/null
+++ b/src/lib/core/constructor-metadata-inherit.ts
@@ -0,0 +1,21 @@
+/**
+ * @license
+ * Copyright Google LLC 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 {Type} from '@angular/core';
+
+/**
+ * Workaround for https://github.com/angular/material2/issues/12760. In order to work around
+ * the issue where classes which extend external classes do not have the proper metadata in
+ * ES2015, we just manually inherit the metadata for the constructor parameters.
+ * TODO(devversion): check if we can remove the workaround after ivy landed.
+ */
+export function _inheritCtorParametersMetadata(target: Type<any>, base: Type<any>) {
+  (target as any)['ctorParameters'] = () => {
+    const baseParameters = (base as any)['ctorParameters'];
+    return (typeof baseParameters === 'function' ? baseParameters() : baseParameters) || [];
+  };
+}
diff --git a/src/lib/core/public-api.ts b/src/lib/core/public-api.ts
index d31926271546..aee12f153807 100644
--- a/src/lib/core/public-api.ts
+++ b/src/lib/core/public-api.ts
@@ -20,3 +20,4 @@ export * from './selection/index';
 
 // TODO: don't have this
 export * from './testing/month-constants';
+export * from './constructor-metadata-inherit';
diff --git a/src/lib/input/autosize.ts b/src/lib/input/autosize.ts
index b262091a576a..035d75615c08 100644
--- a/src/lib/input/autosize.ts
+++ b/src/lib/input/autosize.ts
@@ -8,6 +8,7 @@
 
 import {CdkTextareaAutosize} from '@angular/cdk/text-field';
 import {Directive, Input} from '@angular/core';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /**
  * Directive to automatically resize a textarea to fit its content.
@@ -45,5 +46,4 @@ export class MatTextareaAutosize extends CdkTextareaAutosize {
 }
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTextareaAutosize as any)['ctorParameters'] = () =>
-    (CdkTextareaAutosize as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatTextareaAutosize, CdkTextareaAutosize);
diff --git a/src/lib/stepper/step-label.ts b/src/lib/stepper/step-label.ts
index 44f7edb1dca0..3a348c57b514 100644
--- a/src/lib/stepper/step-label.ts
+++ b/src/lib/stepper/step-label.ts
@@ -8,6 +8,7 @@
 
 import {Directive} from '@angular/core';
 import {CdkStepLabel} from '@angular/cdk/stepper';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 @Directive({
   selector: '[matStepLabel]',
@@ -15,4 +16,4 @@ import {CdkStepLabel} from '@angular/cdk/stepper';
 export class MatStepLabel extends CdkStepLabel {}
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatStepLabel as any)['ctorParameters'] = () => (CdkStepLabel as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatStepLabel, CdkStepLabel);
diff --git a/src/lib/stepper/stepper-button.ts b/src/lib/stepper/stepper-button.ts
index fa1454f97f1b..925aef449cad 100644
--- a/src/lib/stepper/stepper-button.ts
+++ b/src/lib/stepper/stepper-button.ts
@@ -9,6 +9,7 @@
 import {Directive} from '@angular/core';
 import {CdkStepper, CdkStepperNext, CdkStepperPrevious} from '@angular/cdk/stepper';
 import {MatStepper} from './stepper';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /** Button that moves to the next step in a stepper workflow. */
 @Directive({
@@ -35,6 +36,5 @@ export class MatStepperNext extends CdkStepperNext {}
 export class MatStepperPrevious extends CdkStepperPrevious {}
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatStepperNext as any)['ctorParameters'] = () => (CdkStepperNext as any)['ctorParameters'];
-(MatStepperPrevious as any)['ctorParameters'] = () =>
-    (CdkStepperPrevious as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatStepperNext, CdkStepperNext);
+_inheritCtorParametersMetadata(MatStepperPrevious, CdkStepperPrevious);
diff --git a/src/lib/stepper/stepper.ts b/src/lib/stepper/stepper.ts
index f91699f30611..cfb3dc2a692a 100644
--- a/src/lib/stepper/stepper.ts
+++ b/src/lib/stepper/stepper.ts
@@ -38,7 +38,7 @@ import {
 } from '@angular/core';
 import {FormControl, FormGroupDirective, NgForm} from '@angular/forms';
 import {DOCUMENT} from '@angular/common';
-import {ErrorStateMatcher} from '@angular/material/core';
+import {_inheritCtorParametersMetadata, ErrorStateMatcher} from '@angular/material/core';
 import {Subject} from 'rxjs';
 import {takeUntil, distinctUntilChanged} from 'rxjs/operators';
 
@@ -124,7 +124,7 @@ export class MatStepper extends CdkStepper implements AfterContentInit {
 }
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatStepper as any)['ctorParameters'] = () => (CdkStepper as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatStepper, CdkStepper);
 
 @Component({
   moduleId: module.id,
diff --git a/src/lib/table/cell.ts b/src/lib/table/cell.ts
index 26b942f74b75..3151a9bc61c7 100644
--- a/src/lib/table/cell.ts
+++ b/src/lib/table/cell.ts
@@ -14,6 +14,7 @@ import {
   CdkHeaderCell,
   CdkHeaderCellDef,
 } from '@angular/cdk/table';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /**
  * Cell definition for the mat-table.
@@ -46,10 +47,9 @@ export class MatHeaderCellDef extends CdkHeaderCellDef {}
 export class MatFooterCellDef extends CdkFooterCellDef {}
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatCellDef as any)['ctorParameters'] = () => (CdkCellDef as any)['ctorParameters'];
-(MatHeaderCellDef as any)['ctorParameters'] = () => (CdkHeaderCellDef as any)['ctorParameters'];
-(MatFooterCellDef as any)['ctorParameters'] = () => (MatFooterCellDef as any)['ctorParameters'];
-
+_inheritCtorParametersMetadata(MatCellDef, CdkCellDef);
+_inheritCtorParametersMetadata(MatHeaderCellDef, CdkHeaderCellDef);
+_inheritCtorParametersMetadata(MatFooterCellDef, CdkFooterCellDef);
 /**
  * Column definition for the mat-table.
  * Defines a set of cells available for a table column.
diff --git a/src/lib/table/row.ts b/src/lib/table/row.ts
index 6160f5afb424..ff47ac7b4f41 100644
--- a/src/lib/table/row.ts
+++ b/src/lib/table/row.ts
@@ -19,6 +19,7 @@ import {
   CdkRow,
   CdkRowDef,
 } from '@angular/cdk/table';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /**
  * Header row definition for the mat-table.
@@ -55,9 +56,9 @@ export class MatFooterRowDef extends CdkFooterRowDef {}
 export class MatRowDef<T> extends CdkRowDef<T> {}
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatHeaderRowDef as any)['ctorParameters'] = () => (CdkHeaderRowDef as any)['ctorParameters'];
-(MatFooterRowDef as any)['ctorParameters'] = () => (CdkFooterRowDef as any)['ctorParameters'];
-(MatRowDef as any)['ctorParameters'] = () => (CdkRowDef as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatHeaderRowDef, CdkHeaderRowDef);
+_inheritCtorParametersMetadata(MatFooterRowDef, CdkFooterRowDef);
+_inheritCtorParametersMetadata(MatRowDef, CdkRowDef);
 
 /** Footer template container that contains the cell outlet. Adds the right class and role. */
 @Component({
diff --git a/src/lib/table/table.ts b/src/lib/table/table.ts
index 6b53f02275c0..eadae8b11af1 100644
--- a/src/lib/table/table.ts
+++ b/src/lib/table/table.ts
@@ -8,6 +8,7 @@
 
 import {CDK_TABLE_TEMPLATE, CdkTable} from '@angular/cdk/table';
 import {ChangeDetectionStrategy, Component, ViewEncapsulation} from '@angular/core';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /**
  * Wrapper for the CdkTable with Material design styles.
@@ -30,4 +31,4 @@ export class MatTable<T> extends CdkTable<T> {
 }
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTable as any)['ctorParameters'] = () => (CdkTable as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatTable, CdkTable);
diff --git a/src/lib/tabs/tab-label.ts b/src/lib/tabs/tab-label.ts
index b74d7338d1b1..cffa8104a77c 100644
--- a/src/lib/tabs/tab-label.ts
+++ b/src/lib/tabs/tab-label.ts
@@ -8,6 +8,7 @@
 
 import {Directive} from '@angular/core';
 import {CdkPortal} from '@angular/cdk/portal';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /** Used to flag tab labels for use with the portal directive */
 @Directive({
@@ -16,4 +17,4 @@ import {CdkPortal} from '@angular/cdk/portal';
 export class MatTabLabel extends CdkPortal {}
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTabLabel as any)['ctorParameters'] = () => (CdkPortal as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatTabLabel, CdkPortal);
diff --git a/src/lib/tree/node.ts b/src/lib/tree/node.ts
index cac435e56191..62a71afabc68 100644
--- a/src/lib/tree/node.ts
+++ b/src/lib/tree/node.ts
@@ -19,6 +19,7 @@ import {
   QueryList,
 } from '@angular/core';
 import {
+  _inheritCtorParametersMetadata,
   CanDisable, CanDisableCtor,
   HasTabIndex,
   HasTabIndexCtor,
@@ -77,7 +78,7 @@ export class MatTreeNodeDef<T> extends CdkTreeNodeDef<T> {
 }
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTreeNodeDef as any)['ctorParameters'] = () => (CdkTreeNodeDef as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatTreeNodeDef, CdkTreeNodeDef);
 
 /**
  * Wrapper for the CdkTree nested node with Material design styles.
diff --git a/src/lib/tree/padding.ts b/src/lib/tree/padding.ts
index 682e33d05d97..787e2ffc4f36 100644
--- a/src/lib/tree/padding.ts
+++ b/src/lib/tree/padding.ts
@@ -7,6 +7,7 @@
  */
 import {CdkTreeNodePadding} from '@angular/cdk/tree';
 import {Directive, Input} from '@angular/core';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /**
  * Wrapper for the CdkTree padding with Material design styles.
@@ -25,5 +26,4 @@ export class MatTreeNodePadding<T> extends CdkTreeNodePadding<T> {
 }
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTreeNodePadding as any)['ctorParameters'] = () =>
-    (CdkTreeNodePadding as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatTreeNodePadding, CdkTreeNodePadding);
diff --git a/src/lib/tree/toggle.ts b/src/lib/tree/toggle.ts
index 06e85cfa6dfb..e4c1501bbc8c 100644
--- a/src/lib/tree/toggle.ts
+++ b/src/lib/tree/toggle.ts
@@ -8,6 +8,7 @@
 
 import {CdkTreeNodeToggle} from '@angular/cdk/tree';
 import {Directive, Input} from '@angular/core';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /**
  * Wrapper for the CdkTree's toggle with Material design styles.
@@ -24,4 +25,4 @@ export class MatTreeNodeToggle<T> extends CdkTreeNodeToggle<T> {
 }
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTreeNodeToggle as any)['ctorParameters'] = () => (CdkTreeNodeToggle as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatTreeNodeToggle, CdkTreeNodeToggle);
diff --git a/src/lib/tree/tree.ts b/src/lib/tree/tree.ts
index 509c248eb782..f1c902c971ae 100644
--- a/src/lib/tree/tree.ts
+++ b/src/lib/tree/tree.ts
@@ -9,6 +9,7 @@
 import {CdkTree} from '@angular/cdk/tree';
 import {ChangeDetectionStrategy, Component, ViewChild, ViewEncapsulation} from '@angular/core';
 import {MatTreeNodeOutlet} from './outlet';
+import {_inheritCtorParametersMetadata} from '@angular/material/core';
 
 /**
  * Wrapper for the CdkTable with Material design styles.
@@ -33,4 +34,4 @@ export class MatTree<T> extends CdkTree<T> {
 }
 
 // TODO(devversion): workaround for https://github.com/angular/material2/issues/12760
-(MatTree as any)['ctorParameters'] = () => (CdkTree as any)['ctorParameters'];
+_inheritCtorParametersMetadata(MatTree, CdkTree);