Add eslint (#610)

angular/src/directives/api-action.directive.ts

@@ -1,6 +1,6 @@
 import { Directive, ElementRef, Input, OnChanges } from "@angular/core";
-import { LogService } from "jslib-common/abstractions/log.service";
 
+import { LogService } from "jslib-common/abstractions/log.service";
 import { ErrorResponse } from "jslib-common/models/response/errorResponse";
 
 import { ValidationService } from "../services/validation.service";

angular/src/directives/autofocus.directive.ts

@@ -1,5 +1,4 @@
 import { Directive, ElementRef, Input, NgZone } from "@angular/core";
-
 import { take } from "rxjs/operators";
 
 import { Utils } from "jslib-common/misc/utils";

angular/src/directives/box-row.directive.ts

@@ -7,7 +7,7 @@ export class BoxRowDirective implements OnInit {
   el: HTMLElement = null;
   formEls: Element[];
 
-  constructor(private elRef: ElementRef) {
+  constructor(elRef: ElementRef) {
     this.el = elRef.nativeElement;
   }
 
@@ -18,7 +18,7 @@ export class BoxRowDirective implements OnInit {
     this.formEls.forEach((formEl) => {
       formEl.addEventListener(
         "focus",
-        (event: Event) => {
+        () => {
           this.el.classList.add("active");
         },
         false
@@ -26,7 +26,7 @@ export class BoxRowDirective implements OnInit {
 
       formEl.addEventListener(
         "blur",
-        (event: Event) => {
+        () => {
           this.el.classList.remove("active");
         },
         false

angular/src/directives/true-false-value.directive.ts

@@ -1,5 +1,5 @@
 import { Directive, ElementRef, forwardRef, HostListener, Input, Renderer2 } from "@angular/core";
-import { ControlValueAccessor, NgControl, NG_VALUE_ACCESSOR } from "@angular/forms";
+import { ControlValueAccessor, NG_VALUE_ACCESSOR } from "@angular/forms";
 
 // ref: https://juristr.com/blog/2018/02/ng-true-value-directive/
 @Directive({