title: npm flatmap-stream@0.1.1 not found
body: <p>I have this error below but I dont have this package on my projecto directly. Anyone else is experiencing the same error? The project compiles and run correctly on my local env and I only get this error when i'm uploading the code to my heroku server. Yesterday I hade the same error with event-stream@3.3.6 but I deleted node_modules folder, deleted package-lock.json and run npm install and everything worked.</p>
  
  <blockquote>
    <p>npm ERR! 404 Not Found: flatmap-stream@0.1.1</p>
  </blockquote>
  
  <pre><code>            {
                  "name": "myproj",
                  "version": "0.0.0",
                  "scripts": {
                      "ng": "ng",
                      "build": "ng build",
                      "start": "node server.js",
                      "test": "ng test",
                      "lint": "ng lint",
                      "e2e": "ng e2e",
                      "postinstall": "ng build --aot --prod"
                  },
                  "private": true,
                  "dependencies": {
                      "@agm/core": "^1.0.0-beta.5",
                      "@agm/js-marker-clusterer": "^1.0.0-beta.5",
                      "@agm/snazzy-info-window": "^1.0.0-beta.5",
                      "@angular/animations": "^6.1.0",
                      "@angular/cli": "^7.0.5",
                      "@angular/common": "^6.1.0",
                      "@angular/compiler": "^6.1.0",
                      "@angular/compiler-cli": "^6.1.0",
                      "@angular/core": "^6.1.0",
                      "@angular/elements": "^6.1.10",
                      "@angular/forms": "^6.1.0",
                      "@angular/http": "^6.1.0",
                      "@angular/platform-browser": "^6.1.0",
                      "@angular/platform-browser-dynamic": "^6.1.0",
                      "@angular/router": "^6.1.0",
                      "@asymmetrik/ngx-leaflet": "^4.0.0",
                      "@asymmetrik/ngx-leaflet-markercluster": "^1.0.0",
                      "@auth0/angular-jwt": "^2.0.0",
                      "@fortawesome/fontawesome-free": "^5.5.0",
                      "@hackages/ngxerrors": "^6.0.3",
                      "@ng-bootstrap/ng-bootstrap": "^3.3.1",
                      "@ngx-translate/core": "^11.0.0",
                      "@ngx-translate/http-loader": "^4.0.0",
                      "@types/leaflet": "^1.2.13",
                      "@types/leaflet.markercluster": "^1.0.3",
                      "@ultimate/ngxerrors": "^1.4.0",
                      "@webcomponents/custom-elements": "^1.2.1",
                      "bootstrap": "^4.1.3",
                      "core-js": "^2.5.4",
                      "document-register-element": "^1.7.2",
                      "express": "^4.16.4",
                      "hammerjs": "^2.0.8",
                      "js-marker-clusterer": "^1.0.0",
                      "jwt-decode": "^2.2.0",
                      "leaflet": "^1.3.4",
                      "leaflet.markercluster": "^1.4.1",
                      "ng4-loading-spinner": "^1.2.3",
                      "ngx-toastr": "^9.1.1",
                      "ngx-toggle": "^2.0.1",
                      "ngx-ui-switch": "^8.0.0-beta.0",
                      "rxjs": "^6.2.2",
                      "save": "^2.3.2",
                      "snazzy-info-window": "^1.1.1",
                      "zone.js": "~0.8.26"
                  },
                  "devDependencies": {
                      "@angular-devkit/build-angular": "~0.8.0",
                      "@angular/cli": "^7.0.5",
                      "@angular/compiler-cli": "^6.1.0",
                      "@angular/language-service": "^6.1.0",
                      "@types/jasmine": "~2.8.8",
                      "@types/jasminewd2": "~2.0.3",
                      "@types/node": "~8.9.4",
                      "codelyzer": "~4.3.0",
                      "jasmine-core": "~2.99.1",
                      "jasmine-spec-reporter": "~4.2.1",
                      "karma": "~3.0.0",
                      "karma-chrome-launcher": "~2.2.0",
                      "karma-coverage-istanbul-reporter": "~2.0.1",
                      "karma-jasmine": "~1.1.2",
                      "karma-jasmine-html-reporter": "^0.2.2",
                      "protractor": "~5.4.0",
                      "ts-node": "~7.0.0",
                      "tslint": "~5.11.0",
                      "typescript": "~2.9.2"
                  },
                  "engines": {
                      "node": "~8.12.0",
                      "npm": "~6.4.1"
                  }
              }
  </code></pre>