diff --git a/scripts/gulp/constants.ts b/scripts/gulp/constants.ts
index d266752d1b..05fe33b550 100644
--- a/scripts/gulp/constants.ts
+++ b/scripts/gulp/constants.ts
@@ -31,7 +31,7 @@ export const DIST_BUILD_ROOT = join(DIST_ROOT, PACKAGE_NAME);
 export const DIST_BUNDLE_ROOT = join(DIST_BUILD_ROOT, BUNDLES);
 export const DIST_BUILD_UMD_ROOT = join(DIST_BUILD_ROOT, UMD_MODULE);
 export const DIST_BUILD_UMD_BUNDLE_ENTRYPOINT = join(DIST_BUILD_ROOT, INDEX_JS);
-export const DIST_BUILD_ESM_ROOT = join(DIST_BUILD_ROOT, 'esm');
+export const DIST_BUILD_ES2015_ROOT = join(DIST_BUILD_ROOT, 'es2015');
 export const DIST_VENDOR_ROOT = join(DIST_ROOT, VENDOR_NAME);
 export const NODE_MODULES_ROOT = join(PROJECT_ROOT, NODE_MODULES);
 export const SCRIPTS_ROOT = join(PROJECT_ROOT, SCRIPTS_NAME);
diff --git a/scripts/gulp/tasks/build.ts b/scripts/gulp/tasks/build.ts
index 213b444824..eb9fe066ef 100644
--- a/scripts/gulp/tasks/build.ts
+++ b/scripts/gulp/tasks/build.ts
@@ -1,5 +1,5 @@
 import { task } from 'gulp';
-import { DIST_BUILD_ROOT, DIST_BUILD_ESM_ROOT, DIST_BUILD_UMD_ROOT, ES5, ES_2015, PROJECT_ROOT, UMD_MODULE } from '../constants';
+import { DIST_BUILD_ROOT, DIST_BUILD_ES2015_ROOT, DIST_BUILD_UMD_ROOT, ES5, ES_2015, PROJECT_ROOT, UMD_MODULE } from '../constants';
 import { copySourceToDest, createTempTsConfig, deleteFiles, runNgc, runTsc } from '../util';
 
 
@@ -45,29 +45,10 @@ export function buildIonicAngularUmdTsc(excludeSpec: boolean, stripDebug: boolea
 
 
 export function buildIonicAngularEsm(stripDebug: boolean, done: Function) {
-  const stream = copySourceToDest(DIST_BUILD_ESM_ROOT, true, true, stripDebug);
-  stream.on('end', () => {
-    // the source files are copied, copy over a tsconfig from
-    createTempTsConfig(['./**/*.ts'], ES_2015, ES_2015, `${PROJECT_ROOT}/tsconfig.json`, `${DIST_BUILD_ESM_ROOT}/tsconfig.json`);
-    runNgc(`${DIST_BUILD_ESM_ROOT}/tsconfig.json`, (err) => {
-      if (err) {
-        done(err);
-        return;
-      }
-      // clean up any .ts files that remain as well as ngc metadata
-      deleteFiles([`${DIST_BUILD_ESM_ROOT}/**/*.ts`,
-                  `${DIST_BUILD_ESM_ROOT}/node_modules`,
-                  `${DIST_BUILD_ESM_ROOT}/tsconfig.json`,
-                  `!${DIST_BUILD_ESM_ROOT}/**/*.d.ts`], done);
-    });
-  });
-}
-
-export function buildIonicPureEs6(stripDebug: boolean, done: Function) {
   const stream = copySourceToDest(DIST_BUILD_ROOT, true, true, stripDebug);
   stream.on('end', () => {
     // the source files are copied, copy over a tsconfig from
-    createTempTsConfig(['./**/*.ts'], ES_2015, ES_2015, `${PROJECT_ROOT}/tsconfig.json`, `${DIST_BUILD_ROOT}/tsconfig.json`);
+    createTempTsConfig(['./**/*.ts'], ES5, ES_2015, `${PROJECT_ROOT}/tsconfig.json`, `${DIST_BUILD_ROOT}/tsconfig.json`);
     runNgc(`${DIST_BUILD_ROOT}/tsconfig.json`, (err) => {
       if (err) {
         done(err);
@@ -82,6 +63,25 @@ export function buildIonicPureEs6(stripDebug: boolean, done: Function) {
   });
 }
 
+export function buildIonicPureEs6(stripDebug: boolean, done: Function) {
+  const stream = copySourceToDest(DIST_BUILD_ES2015_ROOT, true, true, stripDebug);
+  stream.on('end', () => {
+    // the source files are copied, copy over a tsconfig from
+    createTempTsConfig(['./**/*.ts'], ES_2015, ES_2015, `${PROJECT_ROOT}/tsconfig.json`, `${DIST_BUILD_ES2015_ROOT}/tsconfig.json`);
+    runNgc(`${DIST_BUILD_ES2015_ROOT}/tsconfig.json`, (err) => {
+      if (err) {
+        done(err);
+        return;
+      }
+      // clean up any .ts files that remain as well as ngc metadata
+      deleteFiles([`${DIST_BUILD_ES2015_ROOT}/**/*.ts`,
+                  `${DIST_BUILD_ES2015_ROOT}/node_modules`,
+                  `${DIST_BUILD_ES2015_ROOT}/tsconfig.json`,
+                  `!${DIST_BUILD_ES2015_ROOT}/**/*.d.ts`], done);
+    });
+  });
+}
+
 /* this task builds out the necessary stuff for karma */
 task('compile.karma', (done: Function) => {
   buildIonicAngularUmdTsc(false, false, done);
diff --git a/scripts/npm/package.json b/scripts/npm/package.json
index 399464767f..9695a98556 100644
--- a/scripts/npm/package.json
+++ b/scripts/npm/package.json
@@ -8,8 +8,9 @@
     "url": "https://github.com/driftyco/ionic.git"
   },
   "license": "MIT",
-  "main": "esm/index.js",
+  "main": "umd/index.js",
   "module": "index.js",
+  "es2015": "es2015/index.js",
   "peerDependencies": {
     "@angular/common": "",
     "@angular/compiler": "",