angular-cli: *Event/HTML*Element is not defined error in server build

Bug Report or Feature Request (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request

Versions.

Angular CLI: 1.5.0
Node: 8.7.0
OS: win32 x64
Angular: 5.0.1
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, platform-server, router

@angular/cli: 1.5.0
@angular-devkit/build-optimizer: 0.0.32
@angular-devkit/core: 0.0.20
@angular-devkit/schematics: 0.0.35
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.8.0
@schematics/angular: 0.1.2
typescript: 2.4.2
webpack: 3.8.1

Repro steps.

1. Create new app with ng new ....
2. Follow https://github.com/angular/angular-cli/wiki/stories-universal-rendering.
3. Add @HostListener('window:click') click(event: MouseEvent) { } in the app.component.ts.
4. Run yarn run build:ssr && yarn run serve:ssr.

Repro: https://github.com/kevinphelps/angular-cli-issue-8412-repro

The log given by the failure.

ReferenceError: MouseEvent is not defined
    at C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:12684
    at Object.wQAS (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:12867)
    at l (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:149)
    at Object.aR8+ (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:7591)
    at l (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:149)
    at Object.bNRb (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:7978)
    at l (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:149)
    at Object.JwoV (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:995)
    at l (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:149)
    at Object.Zq8w (C:\Users\Kevin\Desktop\server-test\dist\server.js:129629:7299)

Desired functionality.

The use of Event, MouseEvent, KeyboardEvent, HTMLElement, etc. interfaces should not break the server builds.

Mention any other details that might be useful.