Deploy ng-2 admin Angular 2 to heroku - node.js

Question

I'm trying to deploy my project based on ng2-admin .the Build succeeded but whe i launch heroku open to run the project i got :
Application error An error occurred in the application and your page
could not be served. If you are the application owner, check your logs
for details.
Here is the logs:
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Node.js app detected
remote:
remote: -----> Creating runtime environment
remote:
remote: NPM_CONFIG_LOGLEVEL=error
remote: NPM_CONFIG_PRODUCTION=true
remote: NODE_VERBOSE=false
remote: NODE_ENV=production
remote: NODE_MODULES_CACHE=true
remote:
remote: -----> Installing binaries
remote: engines.node (package.json): unspecified
remote: engines.npm (package.json): unspecified (use default)
remote: engines.yarn (package.json): unspecified (use default)
remote:
remote: Resolving node version 6.x via semver.io...
remote: Downloading and installing node 6.11.0...
remote: Using default npm version: 3.10.10
remote: Resolving yarn version (latest) via semver.io...
remote: Downloading and installing yarn (0.24.5)...
remote: Installed yarn 0.24.5
remote:
remote: -----> Restoring cache
remote: Skipping cache restore (new-signature)
remote:
remote: -----> Building dependencies
remote: Installing node modules (yarn.lock)
remote: yarn install v0.24.5
remote: [1/4] Resolving packages...
remote: [2/4] Fetching packages...
remote: warning fsevents#1.1.1: The platform "linux" is incompatible with this module.
remote: info "fsevents#1.1.1" is an optional dependency and failed compatibility check. Excluding it from installation.
remote: [3/4] Linking dependencies...
remote: warning "angular2-datatable#0.6.0" has incorrect peer dependency "#angular/core#^2.0.0".
remote: warning "angular2-datatable#0.6.0" has incorrect peer dependency "#angular/common#^2.0.0".
remote: warning "angular2-datatable#0.6.0" has incorrect peer dependency "#angular/platform-browser#^2.0.0".
remote: warning "ng2-ckeditor#1.1.6" has incorrect peer dependency "#angular/core#^2.1.0".
remote: warning "ng2-ckeditor#1.1.6" has incorrect peer dependency "#angular/forms#^2.1.0".
remote: warning "ng2-ckeditor#1.1.6" has incorrect peer dependency "#angular/common#^2.1.0".
remote: warning "ng2-handsontable#0.48.0" has incorrect peer dependency "#angular/common#^2.3.1".
remote: warning "ng2-handsontable#0.48.0" has incorrect peer dependency "#angular/compiler#^2.3.1".
remote: warning "ng2-handsontable#0.48.0" has incorrect peer dependency "#angular/core#^2.3.1".
remote: warning "ng2-handsontable#0.48.0" has incorrect peer dependency "#angular/forms#^2.3.1".
remote: [4/4] Building fresh packages...
remote: Done in 47.14s.
remote:
remote: -----> Caching build
remote: Clearing previous node cache
remote: Saving 2 cacheDirectories (default):
remote: - node_modules
remote: - bower_components (nothing to cache)
remote:
remote: -----> Build succeeded!
remote: -----> Discovering process types
remote: Procfile declares types -> (none)
remote: Default types for buildpack -> web
remote:
remote: -----> Compressing...
remote: Done: 60.3M
remote: -----> Launching...
remote: Released v3
remote: https://testngadmin.herokuapp.com/ deployed to Heroku
remote:
remote: Verifying deploy... done.
To https://git.heroku.com/testngadmin.git
My package.json:
{
"name": "ng2-admin",
"version": "1.0.0",
"description": "Angular and Bootstrap 4 Admin Template.",
"author": "Akveo <contact#akveo.com>",
"homepage": "http://akveo.github.io/ng2-admin/",
"repository": {
"type": "git",
"url": "https://github.com/akveo/ng2-admin.git"
},
"bugs": {
"url": "https://github.com/akveo/ng2-admin/issues"
},
"license": "MIT",
"scripts": {
"ng": "ng",
"rimraf": "rimraf",
"changelog": "standard-changelog",
"start": "ng serve",
"start:hmr": "ng serve --hmr",
"start:aot": "ng serve --aot",
"start:prod": "ng serve --prod",
"start:prod:aot": "ng serve --prod --aot",
"build": "npm run clean:dist && ng build",
"build:prod": "npm run build -- --prod",
"build:prod:aot": "npm run build:prod -- --aot",
"build:ci": "npm run build:prod && npm run build:prod:aot",
"build:demo": "npm run build:prod:aot -- --base-href \"http://akveo.com/ng2-admin/\"",
"test": "ng test -sr",
"test:coverage": "npm run clean:coverage && ng test -sr -cc",
"lint": "ng lint",
"lint:styles": "stylelint ./src/app/**/*.scss",
"lint:ci": "npm run lint && npm run lint:styles",
"pree2e": "webdriver-manager update --standalone false --gecko false",
"e2e": "ng e2e",
"clean:dist": "npm run rimraf -- dist",
"clean:coverage": "npm run rimraf -- coverage",
"docs:deploy": "wintersmith build -C docs && gh-pages -d docs/build",
"docs:serve": "wintersmith preview -C docs"
},
"private": true,
"dependencies": {
"#angular/animations": "4.1.3",
"#angular/common": "4.1.3",
"#angular/compiler": "4.1.3",
"#angular/core": "4.1.3",
"#angular/forms": "4.1.3",
"#angular/http": "4.1.3",
"#angular/platform-browser": "4.1.3",
"#angular/platform-browser-dynamic": "4.1.3",
"#angular/platform-server": "4.1.3",
"#angular/router": "4.1.3",
"#ng-bootstrap/ng-bootstrap": "1.0.0-alpha.26",
"#ngx-translate/core": "6.0.1",
"#ngx-translate/http-loader": "0.0.3",
"amcharts3": "3.21.2",
"ammap": "^3.20.7",
"angular2-datatable": "0.6.0",
"animate.css": "3.5.2",
"bootstrap": "4.0.0-alpha.6",
"chart.js": "1.1.1",
"chartist": "0.10.1",
"chroma-js": "1.3.3",
"ckeditor": "4.6.2",
"core-js": "2.4.1",
"easy-pie-chart": "2.1.7",
"font-awesome": "4.7.0",
"fullcalendar": "3.3.1",
"google-maps": "3.2.1",
"ionicons": "2.0.1",
"jquery": "3.2.1",
"jquery-slimscroll": "1.3.8",
"leaflet": "0.7.7",
"leaflet-map": "0.2.1",
"lodash": "4.17.4",
"ng2-ckeditor": "1.1.6",
"ng2-completer": "1.3.1",
"ng2-handsontable": "0.48.0",
"ng2-slim-loading-bar": "4.0.0",
"ng2-smart-table": "1.0.3",
"ng2-tree": "2.0.0-alpha.5",
"ngx-uploader": "2.2.5",
"normalize.css": "6.0.0",
"roboto-fontface": "0.7.0",
"rxjs": "5.4.0",
"zone.js": "0.8.11"
},
"devDependencies": {
"#angular/cli": "1.0.4",
"#angular/compiler-cli": "4.1.3",
"#types/fullcalendar": "2.7.40",
"#types/jasmine": "2.5.38",
"#types/jquery": "2.0.41",
"#types/jquery.slimscroll": "1.3.30",
"#types/lodash": "4.14.61",
"#types/node": "6.0.69",
"codelyzer": "3.0.1",
"gh-pages": "0.12.0",
"jasmine-core": "2.5.2",
"jasmine-spec-reporter": "3.2.0",
"karma": "1.4.1",
"karma-chrome-launcher": "2.0.0",
"karma-cli": "1.0.1",
"karma-coverage-istanbul-reporter": "0.2.0",
"karma-jasmine": "1.1.0",
"karma-jasmine-html-reporter": "0.2.2",
"npm-run-all": "4.0.2",
"protractor": "5.1.0",
"rimraf": "2.6.1",
"standard-changelog": "1.0.1",
"stylelint": "7.10.1",
"ts-node": "2.1.2",
"tslint": "5.2.0",
"tslint-eslint-rules": "4.0.0",
"tslint-language-service": "0.9.6",
"typescript": "2.3.2",
"typogr": "0.6.6",
"underscore": "1.8.3",
"wintersmith": "2.2.5",
"wintersmith-sassy": "1.1.0"
}
}

Answer 1

i solve the problem,
delete /dist from .gitignore
run the project localy in production with npm run build:prod to
generate a /dist folder
modify package.json file by adding
"engines": {
"node": "6.9.1",
"npm": "3.10.8"
}
and
"start": "http-server dist/",
"preinstall": "npm install -g http-server"
in scripts

Answer 2

have you tried adding the following line to the scripts section?
"postinstall": "ng build --aot -prod"
I think that you also need to move:
"#angular/cli": "1.0.4",
"#angular/compiler-cli": "4.1.3",
to the dependencies section for this to work.
Hope it helps.