web-ui: Fix X9Developers/block-explorer#55 by upgrading dependencies

[esuau]

Problem

Resolve GitHub vulnerability warning related to angular
Running npm audit found 54 vulnerability issues related to dependencies, mostly caused by the use of outdated versions.

Solution

I ran npm audit fix and npm audit fix --force to fix the vulnerabilities, which forced me to upgrade to the latest version of Angular following the Angular Update Guide. I also had to upgrade all other dependencies related to Angular (6). I installed rxjs-compat to keep the application compatible with RxJS 6. I added moment to dependencies, as requested by the new version of ngx-moment. Finally, I adapted the path to NgHttpLoaderModule in app.module.ts corresponding to the new version of ng-http-loader.

[AlexITC]

I left some minor comments / questions, also, i wonder if you tested the whether the UI flows work as expected.

Thanks.

[AlexITC]

Everything looks good to me, I'll test the app with your changes before merging the PR, thanks!

[AlexITC]

@esuau I tried running the project and there are some issues, I can remember that the main view doesn't display the latest blocks, nor, the address view seems to work.

From the main view, I see this on the developer console, could you please try to fix the issues?

ERROR TypeError: "rxjs_Observable__WEBPACK_IMPORTED_MODULE_2__.Observable.of is not a function"
updateBlockshttp://localhost:4200/main.js:1505:30ngOnInithttp://localhost:4200/main.js:1489:9checkAndUpdateDirectiveInlinehttp://localhost:4200/vendor.js:48060:9checkAndUpdateNodeInlinehttp://localhost:4200/vendor.js:49324:20checkAndUpdateNodehttp://localhost:4200/vendor.js:49286:16debugCheckAndUpdateNodehttp://localhost:4200/vendor.js:49919:19debugCheckDirectivesFnhttp://localhost:4200/vendor.js:49879:13View_HomeComponent_1ng:///AppModule/HomeComponent.ngfactory.js:12:5debugUpdateDirectiveshttp://localhost:4200/vendor.js:49871:12checkAndUpdateViewhttp://localhost:4200/vendor.js:49268:5callViewActionhttp://localhost:4200/vendor.js:49509:21execEmbeddedViewsActionhttp://localhost:4200/vendor.js:49472:17checkAndUpdateViewhttp://localhost:4200/vendor.js:49269:5callViewActionhttp://localhost:4200/vendor.js:49509:21execComponentViewsActionhttp://localhost:4200/vendor.js:49451:13checkAndUpdateViewhttp://localhost:4200/vendor.js:49274:5callViewActionhttp://localhost:4200/vendor.js:49509:21execEmbeddedViewsActionhttp://localhost:4200/vendor.js:49472:17checkAndUpdateViewhttp://localhost:4200/vendor.js:49269:5callViewActionhttp://localhost:4200/vendor.js:49509:21execComponentViewsActionhttp://localhost:4200/vendor.js:49451:13checkAndUpdateViewhttp://localhost:4200/vendor.js:49274:5callWithDebugContexthttp://localhost:4200/vendor.js:50161:22debugCheckAndUpdateViewhttp://localhost:4200/vendor.js:49839:12detectChangeshttp://localhost:4200/vendor.js:47655:13tickhttp://localhost:4200/vendor.js:43388:58tickhttp://localhost:4200/vendor.js:43388:13nexthttp://localhost:4200/vendor.js:43279:99invokehttp://localhost:4200/polyfills.js:2710:17onInvokehttp://localhost:4200/vendor.js:42637:24invokehttp://localhost:4200/polyfills.js:2709:17runhttp://localhost:4200/polyfills.js:2460:24runhttp://localhost:4200/vendor.js:42551:16nexthttp://localhost:4200/vendor.js:43279:69schedulerFnhttp://localhost:4200/vendor.js:42368:36__tryOrUnsubhttp://localhost:4200/vendor.js:119778:13nexthttp://localhost:4200/vendor.js:119716:17_nexthttp://localhost:4200/vendor.js:119660:9nexthttp://localhost:4200/vendor.js:119637:13nexthttp://localhost:4200/vendor.js:119403:17emithttp://localhost:4200/vendor.js:42352:54checkStablehttp://localhost:4200/vendor.js:42606:13onHasTaskhttp://localhost:4200/vendor.js:42650:21hasTaskhttp://localhost:4200/polyfills.js:2763:21_updateTaskCounthttp://localhost:4200/polyfills.js:2783:17_updateTaskCounthttp://localhost:4200/polyfills.js:2607:17runTaskhttp://localhost:4200/polyfills.js:2527:25drainMicroTaskQueuehttp://localhost:4200/polyfills.js:2917:25 HomeComponent.html:9:10
ERROR CONTEXT 
Object { view: {…}, nodeIndex: 0, nodeDef: {…}, elDef: {…}, elView: {…} }
HomeComponent.html:9:10
View_HomeComponent_1
HomeComponent.html:9:10
./node_modules/@angular/core/fesm5/core.js/DebugContext_.prototype.logError
core.js:11306
./node_modules/@angular/core/fesm5/core.js/ErrorHandler.prototype.handleError
core.js:1724
./node_modules/@angular/core/fesm5/core.js/ApplicationRef.prototype.tick/<
core.js:4578:54
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invoke
zone.js:388
./node_modules/zone.js/dist/zone.js/</Zone.prototype.run
zone.js:138
./node_modules/@angular/core/fesm5/core.js/NgZone.prototype.runOutsideAngular
core.js:3779
./node_modules/@angular/core/fesm5/core.js/ApplicationRef.prototype.tick
core.js:4578
next/<
core.js:4462:97
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invoke
zone.js:388
onInvoke
core.js:3820
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.invoke
zone.js:387
./node_modules/zone.js/dist/zone.js/</Zone.prototype.run
zone.js:138
./node_modules/@angular/core/fesm5/core.js/NgZone.prototype.run
core.js:3734
next
core.js:4462:67
./node_modules/@angular/core/fesm5/core.js/EventEmitter.prototype.subscribe/schedulerFn<
core.js:3551:34
./node_modules/rxjs/_esm5/internal/Subscriber.js/SafeSubscriber.prototype.__tryOrUnsub
Subscriber.js:195
./node_modules/rxjs/_esm5/internal/Subscriber.js/SafeSubscriber.prototype.next
Subscriber.js:133
./node_modules/rxjs/_esm5/internal/Subscriber.js/Subscriber.prototype._next
Subscriber.js:77
./node_modules/rxjs/_esm5/internal/Subscriber.js/Subscriber.prototype.next
Subscriber.js:54
./node_modules/rxjs/_esm5/internal/Subject.js/Subject.prototype.next
Subject.js:47
./node_modules/@angular/core/fesm5/core.js/EventEmitter.prototype.emit
core.js:3535:52
checkStable
core.js:3789
onHasTask
core.js:3833
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype.hasTask
zone.js:441
./node_modules/zone.js/dist/zone.js/</ZoneDelegate.prototype._updateTaskCount
zone.js:461
./node_modules/zone.js/dist/zone.js/</Zone.prototype._updateTaskCount
zone.js:285
./node_modules/zone.js/dist/zone.js/</Zone.prototype.runTask
zone.js:205
drainMicroTaskQueue
zone.js:595

[AlexITC]

Looks like it works, thanks!