Differential loading breaks in Safari 10.1.2 (12603.3.8)

🐞 bug report

Affected Package

The issue is caused by package: not sure if this belongs to @angular/core or @angular/cli

Is this a regression?

Yes, it worked fine before the introduction of differential loading

Description

The application won’t load in Safari 10.1.2 if building with differential loading. It works fine without it.

🔬 Minimal Reproduction

Visit angular.io with Safari 10.1.2. It breaks with "Error: Zone.js has detected that ZoneAwarePromise … has been overwritten. I think it happens because of Safari first loading (runtime|polyfills)-es2015 scripts, and then (runtime|polyfills)-es5 scripts.

🔥 Exception or Error

Error: Zone.js has detected that ZoneAwarePromise `(window|global).Promise` has been overwritten.
Most likely cause is that a Promise polyfill has been loaded after Zone.js (Polyfilling Promise api is not necessary when zone.js is loaded. If you must load one, do so before loading zone.js.)
assertZonePatched — zone.js.pre-build-optimizer.js:58
t — core.js.pre-build-optimizer.js:26486
bootstrapModuleFactory — core.js.pre-build-optimizer.js:27202
zUnb — main.ts:11
c — bootstrap:83
(anonymous function) — location.service.ts:11
c — bootstrap:83
r — bootstrap:45
(anonymous function) — bootstrap:210
Module Code — bootstrap:215
evaluate
moduleEvaluation

🌍 Your Environment

Angular Version:

Angular CLI: 8.0.1
Node: 10.15.3
OS: linux x64
Angular: 8.0.0
... animations, cdk, common, compiler, compiler-cli, core, forms
... language-service, material, platform-browser
... platform-browser-dynamic, router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.800.1
@angular-devkit/build-angular     0.800.1
@angular-devkit/build-optimizer   0.800.1
@angular-devkit/build-webpack     0.800.1
@angular-devkit/core              8.0.1
@angular-devkit/schematics        8.0.1
@angular/cli                      8.0.1
@ngtools/webpack                  8.0.1
@schematics/angular               8.0.1
@schematics/update                0.800.1
rxjs                              6.5.2
typescript                        3.4.5
webpack                           4.30.0

[sod]

There is a fix for that in @angular/cli 8.0.3

https://github.com/angular/angular-cli/commit/56d9adc2a1949226a5ddba719f746f878ff3c7d8

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