Angular 2 passed with sickle cannot be processed by google-close-compiler

Question

I have a Angular 2typescript project that I would like to link into a single JS file. Loader:

main.ts

import {platformBrowser} from '@angular/platform-browser';
import {AppModuleNgFactory} from '../aot/dev/app/app.module.ngfactory' //generated code
import {enableProdMode} from '@angular/core';
enableProdMode();
platformBrowser().bootstrapModuleFactory(AppModuleNgFactory).catch(e=>console.error(e));

I used the Angular 2Ahead of the Time compiler to generate files ngfactory.ts. Then I ran tsickleto convert my files to the JS Google Closure Compiler. This is completed without difficulty:

"node_modules/.bin/tsickle" -- -p ./

Here is the result:

main.js

goog.module('C_.websites.learn.angular2.dev.main');var module = module || {id: 'C:/websites/learn/angular2/dev/main.js'};
import { platformBrowser } from '@angular/platform-browser';
var platformBrowser = platformBrowser; /* local alias for Closure JSDoc */
import { AppModuleNgFactory } from '../aot/dev/app/app.module.ngfactory';
var AppModuleNgFactory = AppModuleNgFactory; /* local alias for Closure JSDoc */ //generated code
import { enableProdMode } from '@angular/core';
var enableProdMode = enableProdMode; /* local alias for Closure JSDoc */
enableProdMode();
platformBrowser().bootstrapModuleFactory(AppModuleNgFactory).catch(function (e) { return console.error(e); });

Finally, I use google-closure-compiler-jsgulp to create a task that binds all JS into a single file.

gulpfile.js

const closureCompiler = require('google-closure-compiler-js').gulp();
gulp.task('closure-compiler', function() {
    return gulp.src('./dev/main.js')
        .pipe(closureCompiler({
            compilationLevel: 'SIMPLE',
            warningLevel: 'VERBOSE',
            outputWrapper: '(function(){\n%output%\n}).call(this)',
            jsOutputFile: 'build.js',
            createSourceMap: false
        }))
        .pipe(gulp.dest(appProd));
});

The task does not work immediately with many errors. Here is an example:

dev \ main.js: 3 (JSC_REFERENCE_BEFORE_DECLARE) Variable specified before the declaration: module $ contents $ C_ $ websites $ learn $ angular2 $ dev $ main_platformBrowser

dev\main.js: 5 (JSC_REFERENCE_BEFORE_DECLARE) , : $contents $C_ $websites $learn $ angular2 $dev $main_AppModuleNgFactory

dev\main.js: 7 (JSC_REFERENCE_BEFORE_DECLARE) , : $contents $C_ $websites $learn $ angular2 $dev $main_enableProdMode

dev\main.js: 10 (JSC_POSSIBLE_INEXISTENT_PROPERTY) bootstrapModuleFactory ?

dev\main.js: 3 (JSC_INTERNAL_ERROR_UNEXPECTED_TOKEN) : TypeCheck , IMPORT

dev\main.js: 3 (JSC_INTERNAL_ERROR_UNEXPECTED_TOKEN) : TypeCheck , IMPORT_SPECS...

tsickle , GitHub 10 2016 , "google-closure-compiler-js": "^20160916.0.0".

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