"dependencies": {
"@angular/animations": "^6.0.0",
"@angular/cdk": "^6.2.1",
"@angular/common": "^6.0.0",
"@angular/compiler": "^6.0.0",
"@angular/core": "^6.0.0",
"@angular/forms": "^6.0.0",
"@angular/http": "^6.0.0",
"@angular/material": "^6.2.1",
"@angular/platform-browser": "^6.0.0",
"@angular/platform-browser-dynamic": "^6.0.0",
"@angular/router": "^6.0.0",
"@fnando/sparkline": "^0.3.7",
"@types/socket.io": "^1.4.34",
"core-js": "^2.5.4",
"countup.js-angular2": "^6.0.0",
"d3": "^5.3.0",
"d3-cloud": "^1.2.5",
"hammerjs": "^2.0.8",
"isobject": "^3.0.1",
"js-base64": "^2.4.3",
"leaflet": "^1.3.1",
"leaflet.markercluster": "^1.3.0",
"progressbar.js": "^1.0.1",
"rxjs": "^6.0.0",
"scrollmonitor": "^1.2.4",
"simplebar": "^2.6.1",
"socket.io": "^2.1.1",
"zone.js": "^0.8.26"
},
"devDependencies": {
"@angular-devkit/build-angular": "^0.6.7",
"@angular/cli": "^6.0.7",
"@angular/compiler-cli": "^6.0.3",
"@angular/language-service": "^6.0.3",
"@types/jasmine": "^2.8.8",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~8.9.4",
"codelyzer": "~4.2.1",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~1.7.1",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "^1.4.3",
"karma-jasmine": "~1.1.1",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "^5.3.2",
"ts-node": "~5.0.1",
"tslint": "~5.9.1",
"typescript": "~2.7.2"
}

ng build - Everything works fine
ng build --prod  (with or without --aot) - Running fails with the following error:

runtime.a66f828dca56eeb90e02.js:1 Uncaught TypeError: Cannot read property 'call' of undefined
at p (code snippet: return r[e].call(n.exports,n,n.exports,p),n.l=!0, ... [following])

Working with cli 6.0.7. Same error with cli 6.0.0.