Config refactor (#2128)

* prevent excessive nesting for unions, closes #2107, and genrally refactor config

* a littel cleaner

* working but with inefficiencies

* remove warning from union list

* introduce messaging for config with only pointers

* feat(shared): `ElasticContainer` add new component (#2134)

* feat(shared): `ElasticContainer` add new component

* chore: fix imports

* revert to 250 for resize

* remove logs

Co-authored-by: Alex Inkin <alexander@inkin.ru>

frontend/package-lock.json

@@ -18,6 +18,9 @@
         "@angular/router": "^14.1.0",
         "@ionic/angular": "^6.1.15",
         "@materia-ui/ngx-monaco-editor": "^6.0.0",
+        "@ng-web-apis/common": "^2.0.0",
+        "@ng-web-apis/mutation-observer": "^2.0.0",
+        "@ng-web-apis/resize-observer": "^2.0.0",
         "@start9labs/argon2": "^0.1.0",
         "@start9labs/emver": "^0.1.5",
         "angular-svg-round-progressbar": "^9.0.0",
@@ -3266,6 +3269,42 @@
         "rxjs": ">=6.0.0"
       }
     },
+    "node_modules/@ng-web-apis/common": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@ng-web-apis/common/-/common-2.0.0.tgz",
+      "integrity": "sha512-2Vnp4WTEqKZArhbKLgD1JIKjsDa3hWCa67OWaRWRH5sgX5xneVVaIAvC8gVpiCfl2p1Roen2kxfyYngx7G64SQ==",
+      "dependencies": {
+        "tslib": "^2.2.0"
+      },
+      "peerDependencies": {
+        "@angular/common": ">=12.0.0",
+        "@angular/core": ">=12.0.0"
+      }
+    },
+    "node_modules/@ng-web-apis/mutation-observer": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@ng-web-apis/mutation-observer/-/mutation-observer-2.0.0.tgz",
+      "integrity": "sha512-f51Cu2DloNze1HaTWdUbtYFnt9VXhzpEnHDd9KFdiKOUNfEDx7wrSXIEQqv810hrq7F2jcIAERCdiqV6ItH7Pg==",
+      "dependencies": {
+        "tslib": "^2.2.0"
+      },
+      "peerDependencies": {
+        "@angular/core": ">=12.0.0",
+        "@ng-web-apis/common": ">=2.0.0"
+      }
+    },
+    "node_modules/@ng-web-apis/resize-observer": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@ng-web-apis/resize-observer/-/resize-observer-2.0.0.tgz",
+      "integrity": "sha512-umuXJepTYBCI3ZcW9873fozO0qt1PeHLBNM+wXA+7Wphy35+RQcPNmkwfgkKqWceIjlYAvyuPTNWa5TM1OEeqg==",
+      "dependencies": {
+        "tslib": "^2.2.0"
+      },
+      "peerDependencies": {
+        "@angular/core": ">=12.0.0",
+        "@ng-web-apis/common": ">=2.0.0"
+      }
+    },
     "node_modules/@ngtools/webpack": {
       "version": "14.2.3",
       "resolved": "https://registry.npmjs.org/@ngtools/webpack/-/webpack-14.2.3.tgz",
@@ -16891,6 +16930,30 @@
         "tslib": "^2.0.0"
       }
     },
+    "@ng-web-apis/common": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@ng-web-apis/common/-/common-2.0.0.tgz",
+      "integrity": "sha512-2Vnp4WTEqKZArhbKLgD1JIKjsDa3hWCa67OWaRWRH5sgX5xneVVaIAvC8gVpiCfl2p1Roen2kxfyYngx7G64SQ==",
+      "requires": {
+        "tslib": "^2.2.0"
+      }
+    },
+    "@ng-web-apis/mutation-observer": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@ng-web-apis/mutation-observer/-/mutation-observer-2.0.0.tgz",
+      "integrity": "sha512-f51Cu2DloNze1HaTWdUbtYFnt9VXhzpEnHDd9KFdiKOUNfEDx7wrSXIEQqv810hrq7F2jcIAERCdiqV6ItH7Pg==",
+      "requires": {
+        "tslib": "^2.2.0"
+      }
+    },
+    "@ng-web-apis/resize-observer": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@ng-web-apis/resize-observer/-/resize-observer-2.0.0.tgz",
+      "integrity": "sha512-umuXJepTYBCI3ZcW9873fozO0qt1PeHLBNM+wXA+7Wphy35+RQcPNmkwfgkKqWceIjlYAvyuPTNWa5TM1OEeqg==",
+      "requires": {
+        "tslib": "^2.2.0"
+      }
+    },
     "@ngtools/webpack": {
       "version": "14.2.3",
       "resolved": "https://registry.npmjs.org/@ngtools/webpack/-/webpack-14.2.3.tgz",

frontend/package.json

@@ -39,6 +39,9 @@
     "@angular/platform-browser-dynamic": "^14.1.0",
     "@angular/router": "^14.1.0",
     "@ionic/angular": "^6.1.15",
+    "@ng-web-apis/common": "^2.0.0",
+    "@ng-web-apis/mutation-observer": "^2.0.0",
+    "@ng-web-apis/resize-observer": "^2.0.0",
     "@materia-ui/ngx-monaco-editor": "^6.0.0",
     "@start9labs/argon2": "^0.1.0",
     "@start9labs/emver": "^0.1.5",

frontend/projects/shared/package.json

@@ -6,6 +6,8 @@
     "@angular/core": ">=13.2.0",
     "@angular/router": ">=13.2.0",
     "@ionic/angular": ">=6.0.0",
+    "@ng-web-apis/mutation-observer": ">=2.0.0",
+    "@ng-web-apis/resize-observer": ">=2.0.0",
     "@start9labs/emver": "^0.1.5"
   },
   "exports": {

frontend/projects/shared/src/components/elastic-container/elastic-container.component.html

@@ -0,0 +1,3 @@
+<div (elasticContainer)="height = $event">
+  <ng-content></ng-content>
+</div>

frontend/projects/shared/src/components/elastic-container/elastic-container.component.scss

@@ -0,0 +1,5 @@
+:host {
+  display: block;
+  overflow: hidden;
+  transition: height 0.25s;
+}

frontend/projects/shared/src/components/elastic-container/elastic-container.component.ts

@@ -0,0 +1,12 @@
+import { ChangeDetectionStrategy, Component, HostBinding } from '@angular/core'
+
+@Component({
+  selector: 'elastic-container',
+  templateUrl: './elastic-container.component.html',
+  styleUrls: ['./elastic-container.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ElasticContainerComponent {
+  @HostBinding('style.height.px')
+  height = NaN
+}

frontend/projects/shared/src/components/elastic-container/elastic-container.directive.ts

@@ -0,0 +1,35 @@
+import { Directive, ElementRef, inject, Output } from '@angular/core'
+import { ResizeObserverService } from '@ng-web-apis/resize-observer'
+import {
+  MUTATION_OBSERVER_INIT,
+  MutationObserverService,
+} from '@ng-web-apis/mutation-observer'
+import { distinctUntilChanged, map, merge } from 'rxjs'
+
+@Directive({
+  selector: '[elasticContainer]',
+  providers: [
+    ResizeObserverService,
+    MutationObserverService,
+    {
+      provide: MUTATION_OBSERVER_INIT,
+      useValue: {
+        childList: true,
+        characterData: true,
+        subtree: true,
+      },
+    },
+  ],
+})
+export class ElasticContainerDirective {
+  private readonly elementRef = inject(ElementRef)
+
+  @Output()
+  readonly elasticContainer = merge(
+    inject(ResizeObserverService),
+    inject(MutationObserverService),
+  ).pipe(
+    map(() => this.elementRef.nativeElement.clientHeight),
+    distinctUntilChanged(),
+  )
+}

frontend/projects/shared/src/components/elastic-container/elastic-container.module.ts

@@ -0,0 +1,10 @@
+import { NgModule } from '@angular/core'
+
+import { ElasticContainerComponent } from './elastic-container.component'
+import { ElasticContainerDirective } from './elastic-container.directive'
+
+@NgModule({
+  declarations: [ElasticContainerComponent, ElasticContainerDirective],
+  exports: [ElasticContainerComponent],
+})
+export class ElasticContainerModule {}

frontend/projects/shared/src/public-api.ts

@@ -9,6 +9,9 @@ export * from './components/alert/alert.component'
 export * from './components/alert/alert.module'
 export * from './components/alert/alert-button.directive'
 export * from './components/alert/alert-input.directive'
+export * from './components/elastic-container/elastic-container.component'
+export * from './components/elastic-container/elastic-container.directive'
+export * from './components/elastic-container/elastic-container.module'
 export * from './components/markdown/markdown.component'
 export * from './components/markdown/markdown.component.module'
 export * from './components/text-spinner/text-spinner.component'

frontend/projects/ui/src/app/components/form-object/form-error.component.html

@@ -1,35 +0,0 @@
-<div [hidden]="!control.dirty && !control.touched" class="error-message">
-  <!-- primitive -->
-  <p *ngIf="control.hasError('required')">{{ spec.name }} is required</p>
-
-  <!-- string -->
-  <p *ngIf="control.hasError('pattern')">
-    {{ $any(spec)['pattern-description'] }}
-  </p>
-
-  <!-- number -->
-  <ng-container *ngIf="spec.type === 'number'">
-    <p *ngIf="control.hasError('numberNotInteger')">
-      {{ spec.name }} must be an integer
-    </p>
-    <p *ngIf="control.hasError('numberNotInRange')">
-      {{ control.errors?.['numberNotInRange']?.value }}
-    </p>
-    <p *ngIf="control.hasError('notNumber')">
-      {{ spec.name }} must be a number
-    </p>
-  </ng-container>
-
-  <!-- list -->
-  <ng-container *ngIf="spec.type === 'list'">
-    <p *ngIf="control.hasError('listNotInRange')">
-      {{ control.errors?.['listNotInRange']?.value }}
-    </p>
-    <p *ngIf="control.hasError('listNotUnique')">
-      {{ control.errors?.['listNotUnique']?.value }}
-    </p>
-    <p *ngIf="control.hasError('listItemIssue')">
-      {{ control.errors?.['listItemIssue']?.value }}
-    </p>
-  </ng-container>
-</div>

frontend/projects/ui/src/app/components/form-object/form-label.component.html

@@ -1,5 +1,5 @@
 <ion-button
-  *ngIf="data.spec.description"
+  *ngIf="data.description"
   class="slot-start"
   fill="clear"
   (click)="presentAlertDescription($event)"
@@ -7,21 +7,10 @@
   <ion-icon name="help-circle-outline" slot="icon-only" size="small"></ion-icon>
 </ion-button>
 
-<span>{{ data.spec.name }}</span>
+<span>{{ data.name }}</span>
 
 <ion-text color="success" *ngIf="data.new">&nbsp;(New)</ion-text>
 <ion-text color="success" *ngIf="data.newOptions">&nbsp;(New Options)</ion-text>
 <ion-text color="warning" *ngIf="data.edited">&nbsp;(Edited)</ion-text>
 
-<span
-  *ngIf="
-    (['string', 'number'] | includes: data.spec.type) &&
-    !$any(data.spec).nullable
-  "
->
-  &nbsp;*
-</span>
-
-<span *ngIf="data.spec.type === 'list' && Range.from(data.spec.range).min"
-  >&nbsp;*</span
->
+<span *ngIf="data.required"> &nbsp;* </span>

frontend/projects/ui/src/app/components/form-object/form-object.component.html

@@ -1,66 +1,21 @@
 <ion-item-group [formGroup]="formGroup">
   <div *ngFor="let entry of formGroup.controls | keyvalue: asIsOrder">
-    <!-- union enum -->
-    <ng-container *ngIf="unionSpec && entry.key === unionSpec.tag.id">
-      <ion-item>
-        <ion-button
-          *ngIf="unionSpec.tag.description"
-          class="slot-start"
-          fill="clear"
-          size="small"
-          (click)="
-            presentUnionTagDescription(
-              $event,
-              unionSpec.tag.name,
-              unionSpec.tag.description
-            )
-          "
-        >
-          <ion-icon name="help-circle-outline"></ion-icon>
-        </ion-button>
-        <ion-label>
-          <ion-text color="dark">
-            <b>{{ unionSpec.tag.name }}</b>
-          </ion-text>
-        </ion-label>
-        <!-- class enter-click disables the enter click on the modal behind the select -->
-        <ion-select
-          [interfaceOptions]="{
-            message: getWarningText(unionSpec.warning),
-            cssClass: 'enter-click'
-          }"
-          slot="end"
-          placeholder="Select"
-          [formControlName]="unionSpec.tag.id"
-          [selectedText]="unionSpec.tag['variant-names'][entry.value.value]"
-          (ionChange)="updateUnion($event)"
-        >
-          <ion-select-option
-            *ngFor="let option of Object.keys(unionSpec.variants)"
-            [value]="option"
-          >
-            {{ unionSpec.tag['variant-names'][option] }}
-          </ion-select-option>
-        </ion-select>
-      </ion-item>
-    </ng-container>
-    <div *ngIf="objectSpec[entry.key] as spec" [class.indent]="unionSpec">
+    <div *ngIf="objectSpec[entry.key] as spec">
       <!-- string or number -->
       <ng-container *ngIf="spec.type === 'string' || spec.type === 'number'">
         <!-- label -->
-        <h4
-          class="input-label"
-          [class.validation-error]="formGroup.get(entry.key)?.errors"
-        >
+        <h4 class="input-label">
           <form-label
             [data]="{
-              spec: spec,
+              name: spec.name,
+              description: spec.description,
               new: original?.[entry.key] === undefined,
-              edited: entry.value.dirty
+              edited: entry.value.dirty,
+              required: !spec.nullable
             }"
           ></form-label>
         </h4>
-        <ion-item color="dark" class="ion-margin-bottom">
+        <ion-item color="dark">
           <ion-textarea
             *ngIf="spec.type === 'string' && spec.textarea; else notTextArea"
             [placeholder]="spec.placeholder || 'Enter ' + spec.name"
@@ -107,22 +62,21 @@
             >{{ spec.units }}</ion-note
           >
         </ion-item>
-        <form-error
-          *ngIf="formGroup.get(entry.key)?.errors"
-          [control]="$any(formGroup.get(entry.key))"
-          [spec]="spec"
-        >
-        </form-error>
+        <p class="error-message">
+          <span *ngIf="(formGroup | getControl: entry.key).errors as errors">
+            {{ errors | getError: $any(spec)['pattern-description'] }}
+          </span>
+        </p>
       </ng-container>
       <!-- boolean or enum -->
       <ion-item
-        *ngIf="['boolean', 'enum'] | includes: spec.type"
+        *ngIf="spec.type === 'boolean' || spec.type === 'enum'"
         style="--padding-start: 0"
       >
         <ion-button
           *ngIf="spec.description"
           fill="clear"
-          (click)="presentAlertDescription($event, spec)"
+          (click)="presentAlertBoolEnumDescription($event, spec)"
           style="--padding-start: 0"
         >
           <ion-icon
@@ -157,7 +111,7 @@
         <ion-select
           *ngIf="spec.type === 'enum' && formGroup.get(entry.key) as control"
           [interfaceOptions]="{
-            message: getWarningText(spec.warning),
+            message: spec.warning | toWarningText,
             cssClass: 'enter-click'
           }"
           slot="end"
@@ -173,21 +127,21 @@
           </ion-select-option>
         </ion-select>
       </ion-item>
-      <!-- object or union -->
-      <ng-container *ngIf="spec.type === 'object' || spec.type === 'union'">
+      <!-- object -->
+      <ng-container *ngIf="spec.type === 'object'">
         <!-- label -->
         <ion-item-divider
           (click)="toggleExpandObject(entry.key)"
           style="cursor: pointer"
           [class.error-border]="entry.value.invalid"
-          [class.validation-error]="entry.value.invalid"
         >
           <form-label
             [data]="{
-              spec: spec,
+              name: spec.name,
+              description: spec.description,
               new: original?.[entry.key] === undefined,
-              newOptions: objectDisplay[entry.key].hasNewOptions,
-              edited: entry.value.dirty
+              edited: entry.value.dirty,
+              newOptions: objectDisplay[entry.key].hasNewOptions
             }"
           ></form-label>
           <ion-icon
@@ -198,45 +152,40 @@
               transform: objectDisplay[entry.key].expanded
                 ? 'rotate(0deg)'
                 : 'rotate(180deg)',
-              transition: 'transform 0.25s ease-out'
+              transition: 'transform 0.42s ease-out'
             }"
           ></ion-icon>
         </ion-item-divider>
         <!-- body -->
         <div
-          [id]="getElementId(entry.key)"
+          [id]="objectId | toElementId: entry.key"
           [ngStyle]="{
             'max-height': objectDisplay[entry.key].height,
             overflow: 'hidden',
             'transition-property': 'max-height',
-            'transition-duration': '.25s'
+            'transition-duration': '.42s'
           }"
         >
           <div class="nested-wrapper">
             <form-object
-              *ngIf="spec.type === 'object'"
               [objectSpec]="spec.spec"
               [formGroup]="$any(entry.value)"
               [current]="current?.[entry.key]"
               [original]="original?.[entry.key]"
-              (onExpand)="resize(entry.key)"
-              (hasNewOptions)="setHasNew(entry.key)"
-            ></form-object>
-            <form-object
-              *ngIf="spec.type === 'union'"
-              [objectSpec]="
-                spec.variants[$any(entry.value).controls[spec.tag.id].value]
-              "
-              [formGroup]="$any(entry.value)"
-              [current]="current?.[entry.key]"
-              [original]="original?.[entry.key][spec.tag.id] === current?.[entry.key][spec.tag.id] ? original?.[entry.key] : undefined"
-              [unionSpec]="spec"
-              (onExpand)="resize(entry.key)"
+              (onResize)="resize(entry.key)"
               (hasNewOptions)="setHasNew(entry.key)"
             ></form-object>
           </div>
         </div>
       </ng-container>
+      <!-- union -->
+      <form-union
+        *ngIf="spec.type === 'union'"
+        [spec]="spec"
+        [formGroup]="$any(entry.value)"
+        [current]="current?.[entry.key]"
+        [original]="original?.[entry.key]"
+      ></form-union>
       <!-- list (not enum) -->
       <ng-container *ngIf="spec.type === 'list' && spec.subtype !== 'enum'">
         <ng-container
@@ -244,15 +193,14 @@
           [formArrayName]="entry.key"
         >
           <!-- label -->
-          <ion-item-divider
-            [class.error-border]="entry.value.invalid"
-            [class.validation-error]="entry.value.invalid"
-          >
+          <ion-item-divider [class.error-border]="entry.value.invalid">
             <form-label
               [data]="{
-                spec: spec,
+                name: spec.name,
+                description: spec.description,
                 new: original?.[entry.key] === undefined,
-                edited: entry.value.dirty
+                edited: entry.value.dirty,
+                required: !!(spec.range | toRange).min
               }"
             ></form-label>
             <ion-button
@@ -266,12 +214,11 @@
               Add
             </ion-button>
           </ion-item-divider>
-          <form-error
-            *ngIf="formGroup.get(entry.key)?.errors"
-            [control]="$any(formGroup.get(entry.key))"
-            [spec]="spec"
-          >
-          </form-error>
+          <p class="error-message" style="margin-bottom: 8px">
+            <span *ngIf="(formGroup | getControl: entry.key).errors as errors">
+              {{ errors | getError }}
+            </span>
+          </p>
           <!-- body -->
           <div class="nested-wrapper">
             <div
@@ -279,13 +226,12 @@
                 let abstractControl of $any(formArr).controls;
                 let i = index
               "
-              class="ion-padding-top"
             >
-              <!-- nested -->
+              <!-- object or union -->
               <ng-container
                 *ngIf="spec.subtype === 'object' || spec.subtype === 'union'"
               >
-                <!-- nested label -->
+                <!-- object/union label -->
                 <ion-item
                   button
                   (click)="toggleExpandListObject(entry.key, i)"
@@ -293,11 +239,9 @@
                 >
                   <form-label
                     [data]="{
-                      spec: $any({
-                        name:
-                          objectListDisplay[entry.key][i].displayAs ||
-                          'Entry ' + (i + 1)
-                      }),
+                      name:
+                        objectListDisplay[entry.key][i].displayAs ||
+                        'Entry ' + (i + 1),
                       new: false,
                       edited: abstractControl.dirty
                     }"
@@ -310,41 +254,43 @@
                       transform: objectListDisplay[entry.key][i].expanded
                         ? 'rotate(0deg)'
                         : 'rotate(180deg)',
-                      transition: 'transform 0.25s ease-out'
+                      transition: 'transform 0.42s ease-out'
                     }"
                   ></ion-icon>
                 </ion-item>
-                <!-- nested body -->
+                <!-- object/union body -->
                 <div
                   style="padding-left: 24px"
-                  [id]="getElementId(entry.key, i)"
+                  [id]="objectId | toElementId: entry.key:i"
                   [ngStyle]="{
                     'max-height': objectListDisplay[entry.key][i].height,
                     overflow: 'hidden',
                     'transition-property': 'max-height',
-                    'transition-duration': '.25s'
+                    'transition-duration': '.42s'
                   }"
                 >
                   <form-object
-                    [objectSpec]="
-                      spec.subtype === 'union'
-                        ? $any(spec.spec).variants[
-                            abstractControl.controls[$any(spec.spec).tag.id]
-                              .value
-                          ]
-                        : $any(spec.spec).spec
-                    "
+                    *ngIf="spec.subtype === 'object'"
+                    [objectSpec]="$any(spec.spec).spec"
                     [formGroup]="abstractControl"
                     [current]="current?.[entry.key]?.[i]"
                     [original]="original?.[entry.key]?.[i]"
-                    [unionSpec]="
-                      spec.subtype === 'union' ? $any(spec.spec) : undefined
-                    "
                     (onInputChange)="
                       updateLabel(entry.key, i, $any(spec.spec)['display-as'])
                     "
-                    (onExpand)="resize(entry.key, i)"
+                    (onResize)="resize(entry.key, i)"
                   ></form-object>
+                  <form-union
+                    *ngIf="spec.subtype === 'union'"
+                    [spec]="$any(spec.spec)"
+                    [formGroup]="abstractControl"
+                    [current]="current?.[entry.key]?.[i]"
+                    [original]="original?.[entry.key]?.[i]"
+                    (onInputChange)="
+                      updateLabel(entry.key, i, $any(spec.spec)['display-as'])
+                    "
+                    (onResize)="resize(entry.key, i)"
+                  ></form-union>
                   <div style="text-align: right; padding-top: 12px">
                     <ion-button
                       fill="clear"
@@ -358,9 +304,9 @@
                 </div>
               </ng-container>
               <!-- string or number -->
-              <ion-item-group
-                [id]="getElementId(entry.key, i)"
+              <div
                 *ngIf="spec.subtype === 'string' || spec.subtype === 'number'"
+                [id]="objectId | toElementId: entry.key:i"
               >
                 <ion-item color="dark">
                   <ion-input
@@ -382,13 +328,16 @@
                     <ion-icon slot="icon-only" name="close"></ion-icon>
                   </ion-button>
                 </ion-item>
-                <form-error
-                  *ngIf="abstractControl.errors"
-                  [control]="abstractControl"
-                  [spec]="$any(spec.spec)"
-                >
-                </form-error>
-              </ion-item-group>
+                <p class="error-message">
+                  <span
+                    *ngIf="
+                      (formGroup | getControl: entry.key:i).errors as errors
+                    "
+                  >
+                    {{ errors | getError: $any(spec)['pattern-description'] }}
+                  </span>
+                </p>
+              </div>
             </div>
           </div>
         </ng-container>
@@ -402,9 +351,9 @@
           <!-- label -->
           <p class="input-label">
             <form-label
-              [class.validation-error]="entry.value.invalid"
               [data]="{
-                spec: spec,
+                name: spec.name,
+                description: spec.description,
                 new: original?.[entry.key] === undefined,
                 edited: entry.value.dirty
               }"
@@ -418,18 +367,17 @@
             (click)="presentModalEnumList(entry.key, $any(spec), formArr.value)"
           >
             <ion-label style="white-space: nowrap !important">
-              <h2>{{ getEnumListDisplay(formArr.value, $any(spec.spec)) }}</h2>
+              <h2>{{ formArr.value | toEnumListDisplay: $any(spec.spec) }}</h2>
             </ion-label>
             <ion-button slot="end" fill="clear" color="light">
               <ion-icon slot="icon-only" name="chevron-down"></ion-icon>
             </ion-button>
           </ion-item>
-          <form-error
-            *ngIf="formGroup.get(entry.key)?.errors"
-            [control]="$any(formGroup.get(entry.key))"
-            [spec]="spec"
-          >
-          </form-error>
+          <p class="error-message">
+            <span *ngIf="(formGroup | getControl: entry.key).errors as errors">
+              {{ errors | getError }}
+            </span>
+          </p>
         </ng-container>
       </ng-container>
     </div>

frontend/projects/ui/src/app/components/form-object/form-object.component.module.ts

@@ -2,16 +2,34 @@ import { NgModule } from '@angular/core'
 import { CommonModule } from '@angular/common'
 import {
   FormObjectComponent,
+  FormUnionComponent,
   FormLabelComponent,
-  FormErrorComponent,
 } from './form-object.component'
+import {
+  GetErrorPipe,
+  ToWarningTextPipe,
+  ToElementIdPipe,
+  GetControlPipe,
+  ToEnumListDisplayPipe,
+  ToRangePipe,
+} from './form-object.pipes'
 import { IonicModule } from '@ionic/angular'
 import { FormsModule, ReactiveFormsModule } from '@angular/forms'
-import { SharedPipesModule } from '@start9labs/shared'
+import { ElasticContainerModule, SharedPipesModule } from '@start9labs/shared'
 import { EnumListPageModule } from 'src/app/modals/enum-list/enum-list.module'
 
 @NgModule({
-  declarations: [FormObjectComponent, FormLabelComponent, FormErrorComponent],
+  declarations: [
+    FormObjectComponent,
+    FormUnionComponent,
+    FormLabelComponent,
+    ToWarningTextPipe,
+    GetErrorPipe,
+    ToEnumListDisplayPipe,
+    ToElementIdPipe,
+    GetControlPipe,
+    ToRangePipe,
+  ],
   imports: [
     CommonModule,
     IonicModule,
@@ -19,7 +37,8 @@ import { EnumListPageModule } from 'src/app/modals/enum-list/enum-list.module'
     ReactiveFormsModule,
     SharedPipesModule,
     EnumListPageModule,
+    ElasticContainerModule,
   ],
-  exports: [FormObjectComponent, FormLabelComponent, FormErrorComponent],
+  exports: [FormObjectComponent, FormLabelComponent],
 })
 export class FormObjectComponentModule {}

frontend/projects/ui/src/app/components/form-object/form-object.component.scss

@@ -31,16 +31,10 @@ ion-item-divider {
   padding: 0 0 16px 24px;
 }
 
-.validation-error {
-  opacity: 1;
-}
-
 .error-message {
-  p {
-    margin-bottom: 4px;
-    font-size: small;
-    color: var(--ion-color-danger);
-  }
+  margin-top: 2px;
+  font-size: small;
+  color: var(--ion-color-danger);
 }
 
 .indent {

frontend/projects/ui/src/app/components/form-object/form-object.component.ts

@@ -1,30 +1,28 @@
-import { Component, Input, Output, EventEmitter } from '@angular/core'
 import {
-  AbstractFormGroupDirective,
-  FormArray,
-  UntypedFormArray,
-  UntypedFormGroup,
-} from '@angular/forms'
-import {
-  AlertButton,
-  AlertController,
-  IonicSafeString,
-  ModalController,
-} from '@ionic/angular'
+  Component,
+  Input,
+  Output,
+  EventEmitter,
+  ChangeDetectionStrategy,
+  Inject,
+} from '@angular/core'
+import { FormArray, UntypedFormArray, UntypedFormGroup } from '@angular/forms'
+import { AlertButton, AlertController, ModalController } from '@ionic/angular'
 import {
   ConfigSpec,
   ListValueSpecOf,
   ValueSpec,
   ValueSpecBoolean,
+  ValueSpecEnum,
   ValueSpecList,
   ValueSpecListOf,
   ValueSpecUnion,
 } from 'src/app/pkg-config/config-types'
 import { FormService } from 'src/app/services/form.service'
-import { Range } from 'src/app/pkg-config/config-utilities'
 import { EnumListPage } from 'src/app/modals/enum-list/enum-list.page'
 import { pauseFor } from '@start9labs/shared'
 import { v4 } from 'uuid'
+import { DOCUMENT } from '@angular/common'
 const Mustache = require('mustache')
 
 interface Config {
@@ -38,11 +36,10 @@ interface Config {
 export class FormObjectComponent {
   @Input() objectSpec!: ConfigSpec
   @Input() formGroup!: UntypedFormGroup
-  @Input() unionSpec?: ValueSpecUnion
   @Input() current?: Config
   @Input() original?: Config
   @Output() onInputChange = new EventEmitter<void>()
-  @Output() onExpand = new EventEmitter<void>()
+  @Output() onResize = new EventEmitter<void>()
   @Output() hasNewOptions = new EventEmitter<void>()
   warningAck: { [key: string]: boolean } = {}
   unmasked: { [key: string]: boolean } = {}
@@ -52,14 +49,13 @@ export class FormObjectComponent {
   objectListDisplay: {
     [key: string]: { expanded: boolean; height: string; displayAs: string }[]
   } = {}
-  private objectId = v4()
-
-  Object = Object
+  objectId = v4()
 
   constructor(
     private readonly alertCtrl: AlertController,
     private readonly modalCtrl: ModalController,
     private readonly formService: FormService,
+    @Inject(DOCUMENT) private readonly document: Document,
   ) {}
 
   ngOnInit() {
@@ -80,7 +76,7 @@ export class FormObjectComponent {
               : '',
           }
         })
-      } else if (['object', 'union'].includes(spec.type)) {
+      } else if (spec.type === 'object') {
         this.objectDisplay[key] = {
           expanded: false,
           height: '0px',
@@ -101,64 +97,30 @@ export class FormObjectComponent {
     }, 10)
   }
 
-  getEnumListDisplay(arr: string[], spec: ListValueSpecOf<'enum'>): string {
-    return arr.map((v: string) => spec['value-names'][v]).join(', ')
-  }
-
-  updateUnion(e: any): void {
-    const id = this.unionSpec?.tag.id
-
-    Object.keys(this.formGroup.controls).forEach(control => {
-      if (control === id) return
-      this.formGroup.removeControl(control)
-    })
-
-    const unionGroup = this.formService.getUnionObject(
-      this.unionSpec as ValueSpecUnion,
-      e.detail.value,
-    )
-
-    Object.keys(unionGroup.controls).forEach(control => {
-      if (control === id) return
-      this.formGroup.addControl(control, unionGroup.controls[control])
-    })
-
-    Object.entries(this.unionSpec?.variants[e.detail.value] || {}).forEach(
-      ([key, value]) => {
-        if (['object', 'union'].includes(value.type)) {
-          this.objectDisplay[key] = {
-            expanded: false,
-            height: '0px',
-            hasNewOptions: false,
-          }
-        }
-      },
-    )
-
-    this.onExpand.emit()
-  }
-
   resize(key: string, i?: number): void {
     setTimeout(() => {
       if (i !== undefined) {
-        this.objectListDisplay[key][i].height = this.getDocSize(key, i)
+        this.objectListDisplay[key][i].height = this.getScrollHeight(key, i)
       } else {
-        this.objectDisplay[key].height = this.getDocSize(key)
+        this.objectDisplay[key].height = this.getScrollHeight(key)
       }
-      this.onExpand.emit()
-    }, 250) // 250 to match transition-duration, defined in html
+      this.onResize.emit()
+    }, 250) // 250 to match transition-duration defined in html, for smooth recursive resize
   }
 
-  addListItemWrapper(key: string, spec: ValueSpec) {
+  addListItemWrapper<T extends ValueSpec>(
+    key: string,
+    spec: T extends ValueSpecUnion ? never : T,
+  ) {
     this.presentAlertChangeWarning(key, spec, () => this.addListItem(key))
   }
 
   toggleExpandObject(key: string) {
     this.objectDisplay[key].expanded = !this.objectDisplay[key].expanded
     this.objectDisplay[key].height = this.objectDisplay[key].expanded
-      ? this.getDocSize(key)
+      ? this.getScrollHeight(key)
       : '0px'
-    this.onExpand.emit()
+    this.onResize.emit()
   }
 
   toggleExpandListObject(key: string, i: number) {
@@ -166,9 +128,9 @@ export class FormObjectComponent {
       !this.objectListDisplay[key][i].expanded
     this.objectListDisplay[key][i].height = this.objectListDisplay[key][i]
       .expanded
-      ? this.getDocSize(key, i)
+      ? this.getScrollHeight(key, i)
       : '0px'
-    this.onExpand.emit()
+    this.onResize.emit()
   }
 
   updateLabel(key: string, i: number, displayAs: string) {
@@ -177,12 +139,6 @@ export class FormObjectComponent {
       : ''
   }
 
-  getWarningText(text: string = ''): IonicSafeString | string {
-    return text
-      ? new IonicSafeString(`<ion-text color="warning">${text}</ion-text>`)
-      : ''
-  }
-
   handleInputChange() {
     this.onInputChange.emit()
   }
@@ -224,9 +180,9 @@ export class FormObjectComponent {
     await modal.present()
   }
 
-  async presentAlertChangeWarning(
+  async presentAlertChangeWarning<T extends ValueSpec>(
     key: string,
-    spec: ValueSpec,
+    spec: T extends ValueSpecUnion ? never : T,
     okFn?: Function,
     cancelFn?: Function,
   ) {
@@ -282,7 +238,10 @@ export class FormObjectComponent {
     await alert.present()
   }
 
-  async presentAlertDescription(event: Event, spec: ValueSpec) {
+  async presentAlertBoolEnumDescription(
+    event: Event,
+    spec: ValueSpecBoolean | ValueSpecEnum,
+  ) {
     event.stopPropagation()
     const { name, description } = spec
 
@@ -318,15 +277,18 @@ export class FormObjectComponent {
       })
     }
 
-    this.onExpand.emit()
-
-    pauseFor(400).then(() => {
-      const element = document.getElementById(this.getElementId(key, index))
+    setTimeout(() => {
+      const element = this.document.getElementById(
+        getElementId(this.objectId, key, index),
+      )
       element?.parentElement?.scrollIntoView({ behavior: 'smooth' })
-    })
+
+      if (['object', 'union'].includes(listSpec.subtype)) {
+        pauseFor(250).then(() => this.toggleExpandListObject(key, index))
+      }
+    }, 100)
 
     arr.markAsDirty()
-    newItem.markAllAsTouched()
   }
 
   private deleteListItem(key: string, index: number, markDirty = true): void {
@@ -360,57 +322,106 @@ export class FormObjectComponent {
     })
 
     arr.markAsDirty()
-    arr.markAllAsTouched()
   }
 
-  private getDocSize(key: string, index = 0): string {
-    const element = document.getElementById(this.getElementId(key, index))
+  private getScrollHeight(key: string, index = 0): string {
+    const element = this.document.getElementById(
+      getElementId(this.objectId, key, index),
+    )
     return `${element?.scrollHeight}px`
   }
 
-  getElementId(key: string, index = 0): string {
-    return `${key}-${index}-${this.objectId}`
-  }
-
-  async presentUnionTagDescription(
-    event: Event,
-    name: string,
-    description: string,
-  ) {
-    event.stopPropagation()
-    const alert = await this.alertCtrl.create({
-      header: name,
-      message: description,
-    })
-    await alert.present()
-  }
-
   asIsOrder() {
     return 0
   }
 }
 
-interface HeaderData {
-  spec: ValueSpec
-  edited: boolean
-  new: boolean
-  newOptions?: boolean
+@Component({
+  selector: 'form-union',
+  templateUrl: './form-union.component.html',
+  styleUrls: ['./form-object.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class FormUnionComponent {
+  @Input() formGroup!: UntypedFormGroup
+  @Input() spec!: ValueSpecUnion
+  @Input() current?: Config
+  @Input() original?: Config
+
+  @Output() onResize = new EventEmitter<void>()
+
+  get unionValue() {
+    return this.formGroup.get(this.spec.tag.id)?.value
+  }
+
+  get isNew() {
+    return !this.original
+  }
+
+  get hasNewOptions() {
+    const tagId = this.spec.tag.id
+    return (
+      this.original?.[tagId] === this.current?.[tagId] &&
+      !!Object.keys(this.current || {}).find(
+        key => this.original![key] === undefined,
+      )
+    )
+  }
+
+  objectId = v4()
+
+  constructor(
+    private readonly formService: FormService,
+    @Inject(DOCUMENT) private readonly document: Document,
+  ) {}
+
+  updateUnion(e: any): void {
+    const tagId = this.spec.tag.id
+
+    Object.keys(this.formGroup.controls).forEach(control => {
+      if (control === tagId) return
+      this.formGroup.removeControl(control)
+    })
+
+    const unionGroup = this.formService.getUnionObject(
+      this.spec as ValueSpecUnion,
+      e.detail.value,
+    )
+
+    Object.keys(unionGroup.controls).forEach(control => {
+      if (control === tagId) return
+      this.formGroup.addControl(control, unionGroup.controls[control])
+    })
+  }
+
+  resize(): void {
+    setTimeout(() => {
+      this.onResize.emit()
+    }, 250) // 250 to match transition-duration, defined in html
+  }
 }
 
 @Component({
   selector: 'form-label',
   templateUrl: './form-label.component.html',
   styleUrls: ['./form-object.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class FormLabelComponent {
-  Range = Range
-  @Input() data!: HeaderData
+  @Input() data!: {
+    name: string
+    new: boolean
+    edited: boolean
+    description?: string
+    required?: boolean
+    newOptions?: boolean
+  }
 
   constructor(private readonly alertCtrl: AlertController) {}
 
   async presentAlertDescription(event: Event) {
     event.stopPropagation()
-    const { name, description } = this.data.spec
+    const { name, description } = this.data
 
     const alert = await this.alertCtrl.create({
       header: name,
@@ -426,12 +437,6 @@ export class FormLabelComponent {
   }
 }
 
-@Component({
-  selector: 'form-error',
-  templateUrl: './form-error.component.html',
-  styleUrls: ['./form-object.component.scss'],
-})
-export class FormErrorComponent {
-  @Input() control!: AbstractFormGroupDirective
-  @Input() spec!: ValueSpec
+export function getElementId(objectId: string, key: string, index = 0): string {
+  return `${key}-${index}-${objectId}`
 }

frontend/projects/ui/src/app/components/form-object/form-object.pipes.ts

@@ -0,0 +1,92 @@
+import { Pipe, PipeTransform } from '@angular/core'
+import {
+  AbstractControl,
+  FormGroup,
+  UntypedFormArray,
+  ValidationErrors,
+} from '@angular/forms'
+import { IonicSafeString } from '@ionic/angular'
+import { ListValueSpecOf } from 'src/app/pkg-config/config-types'
+import { Range } from 'src/app/pkg-config/config-utilities'
+import { getElementId } from './form-object.component'
+
+@Pipe({
+  name: 'getError',
+})
+export class GetErrorPipe implements PipeTransform {
+  transform(errors: ValidationErrors, patternDesc?: string): string {
+    if (errors['required']) {
+      return 'Required'
+    } else if (errors['pattern']) {
+      return patternDesc || 'Invalid pattern'
+    } else if (errors['notNumber']) {
+      return 'Must be a number'
+    } else if (errors['numberNotInteger']) {
+      return 'Must be an integer'
+    } else if (errors['numberNotInRange']) {
+      return errors['numberNotInRange'].value
+    } else if (errors['listNotUnique']) {
+      return errors['listNotUnique'].value
+    } else if (errors['listNotInRange']) {
+      return errors['listNotInRange'].value
+    } else if (errors['listItemIssue']) {
+      return errors['listItemIssue'].value
+    } else {
+      return 'Unknown error'
+    }
+  }
+}
+
+@Pipe({
+  name: 'toEnumListDisplay',
+})
+export class ToEnumListDisplayPipe implements PipeTransform {
+  transform(arr: string[], spec: ListValueSpecOf<'enum'>): string {
+    return arr.map((v: string) => spec['value-names'][v]).join(', ')
+  }
+}
+
+@Pipe({
+  name: 'toWarningText',
+})
+export class ToWarningTextPipe implements PipeTransform {
+  transform(text?: string): IonicSafeString | string {
+    return text
+      ? new IonicSafeString(`<ion-text color="warning">${text}</ion-text>`)
+      : ''
+  }
+}
+
+@Pipe({
+  name: 'toRange',
+})
+export class ToRangePipe implements PipeTransform {
+  transform(range: string): Range {
+    return Range.from(range)
+  }
+}
+
+@Pipe({
+  name: 'toElementId',
+})
+export class ToElementIdPipe implements PipeTransform {
+  transform(objectId: string, key: string, index = 0): string {
+    return getElementId(objectId, key, index)
+  }
+}
+
+@Pipe({
+  name: 'getControl',
+})
+export class GetControlPipe implements PipeTransform {
+  transform(
+    formGroup: FormGroup,
+    key: string,
+    index?: number,
+  ): AbstractControl {
+    const abstractControl = formGroup.get(key)!
+    if (index !== undefined)
+      return (abstractControl as UntypedFormArray).at(index)
+    return abstractControl
+  }
+}

frontend/projects/ui/src/app/components/form-object/form-union.component.html

@@ -0,0 +1,43 @@
+<div [formGroup]="formGroup">
+  <!-- union enum -->
+  <ion-item-divider [class.error-border]="formGroup.invalid">
+    <form-label
+      [data]="{
+        name: spec.tag.name,
+        description: spec.tag.description,
+        new: isNew,
+        newOptions: hasNewOptions,
+        edited: formGroup.dirty
+      }"
+    ></form-label>
+    <!-- class enter-click disables the enter click on the modal behind the select -->
+    <ion-select
+      [interfaceOptions]="{
+        message: spec.tag.warning | toWarningText,
+        cssClass: 'enter-click'
+      }"
+      slot="end"
+      placeholder="Select"
+      [formControlName]="spec.tag.id"
+      [selectedText]="spec.tag['variant-names'][unionValue]"
+      (ionChange)="updateUnion($event)"
+    >
+      <ion-select-option
+        *ngFor="let option of spec.variants | keyvalue"
+        [value]="option.key"
+      >
+        {{ spec.tag['variant-names'][option.key] }}
+      </ion-select-option>
+    </ion-select>
+  </ion-item-divider>
+
+  <elastic-container [id]="objectId | toElementId: 'union'" class="indent">
+    <form-object
+      [objectSpec]="spec.variants[unionValue]"
+      [formGroup]="formGroup"
+      [current]="current"
+      [original]="original"
+      (onResize)="resize()"
+    ></form-object>
+  </elastic-container>
+</div>

frontend/projects/ui/src/app/modals/app-config/app-config.page.html

@@ -80,8 +80,8 @@
         </ion-label>
       </ion-item>
 
-      <!-- no config -->
-      <ion-item *ngIf="!configForm">
+      <!-- no options -->
+      <ion-item *ngIf="!hasOptions">
         <ion-label>
           <p>
             No config options for {{ pkg.manifest.title }} {{
@@ -111,7 +111,11 @@
 <ion-footer>
   <ion-toolbar>
     <ng-container *ngIf="!loading && !loadingError">
-      <ion-buttons *ngIf="configForm" slot="start" class="ion-padding-start">
+      <ion-buttons
+        *ngIf="configForm && hasOptions"
+        slot="start"
+        class="ion-padding-start"
+      >
         <ion-button fill="clear" (click)="resetDefaults()">
           <ion-icon slot="start" name="refresh"></ion-icon>
           Reset Defaults

frontend/projects/ui/src/app/modals/app-config/app-config.page.ts

@@ -53,6 +53,8 @@ export class AppConfigPage {
   saving = false
   loadingError: string | IonicSafeString = ''
 
+  hasOptions = false
+
   constructor(
     private readonly embassyApi: ApiService,
     private readonly errToast: ErrorToastService,
@@ -101,7 +103,10 @@ export class AppConfigPage {
         this.configSpec,
         newConfig || this.original,
       )
-      this.configForm.markAllAsTouched()
+
+      this.hasOptions = !!Object.values(this.configSpec).find(
+        valSpec => valSpec.type !== 'pointer',
+      )
 
       if (patch) {
         this.diff = this.getDiff(patch)

frontend/projects/ui/src/app/modals/generic-form/generic-form.page.ts

@@ -48,7 +48,6 @@ export class GenericFormPage {
     convertValuesRecursive(this.spec, this.formGroup)
 
     if (this.formGroup.invalid) {
-      this.formGroup.markAllAsTouched()
       document
         .getElementsByClassName('validation-error')[0]
         ?.scrollIntoView({ behavior: 'smooth' })

frontend/projects/ui/src/app/pkg-config/config-types.ts

@@ -53,7 +53,7 @@ export interface ValueSpecBoolean extends WithStandalone {
   default: boolean
 }
 
-export interface ValueSpecUnion extends WithStandalone {
+export interface ValueSpecUnion {
   type: 'union'
   tag: UnionTagSpec
   variants: { [key: string]: ConfigSpec }
@@ -159,12 +159,13 @@ export interface ListValueSpecUnion {
 
 export interface UnionTagSpec {
   id: string // The name of the field containing one of the union variants
-  name: string
-  description?: string
   'variant-names': {
     // the name of each variant
     [variant: string]: string
   }
+  name: string
+  description?: string
+  warning?: string
 }
 
 export type DefaultString = string | { charset: string; len: number }

frontend/projects/ui/src/app/services/api/api.fixures.ts

@@ -291,18 +291,17 @@ export module Mock {
             },
           },
           bitcoinNode: {
-            name: 'Bitcoin Node Settings',
             type: 'union',
-            description: 'The node settings',
             default: 'internal',
-            warning: 'Careful changing this',
             tag: {
               id: 'type',
-              name: 'Type',
               'variant-names': {
                 internal: 'Internal',
                 external: 'External',
               },
+              name: 'Bitcoin Node Settings',
+              description: 'The node settings',
+              warning: 'Careful changing this',
             },
             variants: {
               internal: {
@@ -1249,12 +1248,12 @@ export module Mock {
       spec: {
         tag: {
           id: 'preference',
-          name: 'Preferences',
           'variant-names': {
             summer: 'Summer',
             winter: 'Winter',
             other: 'Other',
           },
+          name: 'Preference',
         },
         // this default is used to make a union selection when a new list element is first created
         default: 'summer',
@@ -1425,18 +1424,17 @@ export module Mock {
       },
     },
     'bitcoin-node': {
-      name: 'Bitcoin Node Settings',
       type: 'union',
-      description: 'Options<ul><li>Item 1</li><li>Item 2</li></ul>',
       default: 'internal',
-      warning: 'Careful changing this',
       tag: {
         id: 'type',
-        name: 'Type',
         'variant-names': {
           internal: 'Internal',
           external: 'External',
         },
+        name: 'Bitcoin Node Settings',
+        description: 'Options<ul><li>Item 1</li><li>Item 2</li></ul>',
+        warning: 'Careful changing this',
       },
       variants: {
         internal: {

frontend/projects/ui/src/app/services/api/mock-patch.ts

@@ -345,18 +345,17 @@ export const mockPatchData: DataModel = {
                 },
               },
               bitcoinNode: {
-                name: 'Bitcoin Node Settings',
                 type: 'union',
-                description: 'The node settings',
                 default: 'internal',
-                warning: 'Careful changing this',
                 tag: {
                   id: 'type',
-                  name: 'Type',
                   'variant-names': {
                     internal: 'Internal',
                     external: 'External',
                   },
+                  name: 'Bitcoin Node Settings',
+                  description: 'The node settings',
+                  warning: 'Careful changing this',
                 },
                 variants: {
                   internal: {

frontend/projects/ui/src/app/services/form.service.ts

@@ -46,9 +46,7 @@ export class FormService {
     current?: { [key: string]: any } | null,
   ): UntypedFormGroup {
     const { variants, tag } = spec
-    const { name, description, warning } = isFullUnion(spec)
-      ? spec
-      : { ...spec.tag, warning: undefined }
+    const { name, description, warning, 'variant-names': variantNames } = tag
 
     const enumSpec: ValueSpecEnum = {
       type: 'enum',
@@ -57,7 +55,7 @@ export class FormService {
       warning,
       default: selection,
       values: Object.keys(variants),
-      'value-names': tag['variant-names'],
+      'value-names': variantNames,
     }
     return this.getFormGroup(
       { [spec.tag.id]: enumSpec, ...spec.variants[selection] },
@@ -207,12 +205,6 @@ function listValidators(spec: ValueSpecList): ValidatorFn[] {
   return validators
 }
 
-function isFullUnion(
-  spec: ValueSpecUnion | ListValueSpecUnion,
-): spec is ValueSpecUnion {
-  return !!(spec as ValueSpecUnion).name
-}
-
 export function numberInRange(stringRange: string): ValidatorFn {
   return control => {
     const value = control.value
@@ -461,15 +453,18 @@ function uniqueByMessageWrapper(
 ) {
   let configSpec: ConfigSpec
   if (isUnion(spec)) {
-    const variantKey = obj[spec.tag.id]
-    configSpec = spec.variants[variantKey]
+    const tagId = spec.tag.id
+    configSpec = {
+      [tagId]: { name: spec.tag.name } as ValueSpec,
+      ...spec.variants[obj[tagId]],
+    }
   } else {
     configSpec = spec.spec
   }
 
   const message = uniqueByMessage(uniqueBy, configSpec)
   if (message) {
-    return ' Must be unique by: ' + message + '.'
+    return ' Must be unique by: ' + message
   }
 }
 
@@ -483,7 +478,9 @@ function uniqueByMessage(
   if (uniqueBy === null) {
     return ''
   } else if (typeof uniqueBy === 'string') {
-    return configSpec[uniqueBy] ? configSpec[uniqueBy].name : uniqueBy
+    return configSpec[uniqueBy]
+      ? (configSpec[uniqueBy] as ValueSpecObject).name
+      : uniqueBy
   } else if ('any' in uniqueBy) {
     joinFunc = ' OR '
     for (let subSpec of uniqueBy.any) {