added es lint and run prettier

frontend/.eslintrc.json

@@ -27,6 +27,44 @@
             "prefix": "app",
             "style": "kebab-case"
           }
+        ],
+        "@typescript-eslint/explicit-member-accessibility": [
+          "error",
+          {
+            "accessibility": "explicit"
+          }
+        ],
+        "@typescript-eslint/explicit-function-return-type": [
+          "error",
+          {
+            "allowExpressions": false,
+            "allowTypedFunctionExpressions": true,
+            "allowHigherOrderFunctions": false,
+            "allowDirectConstAssertionInArrowFunctions": false,
+            "allowConciseArrowFunctionExpressionsStartingWithVoid": false
+          }
+        ],
+        "@typescript-eslint/member-ordering": [
+          "error",
+          {
+            "default": [
+              "public-static-field",
+              "protected-static-field",
+              "private-static-field",
+              "public-instance-field",
+              "protected-instance-field",
+              "private-instance-field",
+              "public-constructor",
+              "protected-constructor",
+              "private-constructor",
+              "public-static-method",
+              "protected-static-method",
+              "private-static-method",
+              "public-instance-method",
+              "protected-instance-method",
+              "private-instance-method"
+            ]
+          }
         ]
       }
     },
@@ -36,7 +74,14 @@
         "plugin:@angular-eslint/template/recommended",
         "plugin:@angular-eslint/template/accessibility"
       ],
-      "rules": {}
+      "rules": {
+        "@angular-eslint/template/elements-content": [
+          "error",
+          {
+            "allowList": ["label"]
+          }
+        ]
+      }
     }
   ]
 }

frontend/src/app/pages/register-root/register-root.component.ts

@@ -20,7 +20,10 @@ import {
 import { ButtonModule } from 'primeng/button';
 import { CheckboxModule } from 'primeng/checkbox';
 import { PasswordModule } from 'primeng/password';
-import { customEmailValidator, customPasswordValidator } from '../../shared/validator';
+import {
+  customEmailValidator,
+  customPasswordValidator,
+} from '../../shared/validator';
 
 type AuthAction = 'register' | 'signup';
 
@@ -51,8 +54,8 @@ export class RegisterRootComponent implements OnInit {
   public passwordInvalid: WritableSignal<string | null> = signal(null);
   public termsInvalid: WritableSignal<string | null> = signal(null);
 
-  constructor(private readonly formBuilder: FormBuilder) {
+  public constructor(private readonly formBuilder: FormBuilder) {
-    effect(() => {
+    effect((): void => {
       if (this.form) {
         if (this.isRegisterSignal()) {
           this.form.addControl(
@@ -107,16 +110,16 @@ export class RegisterRootComponent implements OnInit {
     this.form = this.formBuilder.group({
       email: new FormControl('', {
         validators: [Validators.required, customEmailValidator()],
-        updateOn: 'change'
+        updateOn: 'change',
       }),
       password: new FormControl('', {
         validators: [Validators.required, customPasswordValidator()],
-        updateOn: 'change'
+        updateOn: 'change',
       }),
       terms: new FormControl(false, {
         validators: [Validators.requiredTrue],
-        updateOn: 'change'
+        updateOn: 'change',
-      })
+      }),
     });
   }
 
@@ -129,9 +132,15 @@ export class RegisterRootComponent implements OnInit {
     const emailControl = this.form?.get('email') as AbstractControl;
     emailControl.valueChanges.subscribe((value: string) => {
       if (value.length >= 4) {
-        emailControl.setValidators([Validators.required, customEmailValidator()]);
+        emailControl.setValidators([
+          Validators.required,
+          customEmailValidator(),
+        ]);
       } else {
-        emailControl.setValidators([Validators.required, Validators.minLength(4)]);
+        emailControl.setValidators([
+          Validators.required,
+          Validators.minLength(4),
+        ]);
       }
       emailControl.updateValueAndValidity({ emitEvent: false });
     });
@@ -140,9 +149,15 @@ export class RegisterRootComponent implements OnInit {
     const passwordControl = this.form?.get('password') as AbstractControl;
     passwordControl.valueChanges.subscribe((value: string) => {
       if (value.length >= 8) {
-        passwordControl.setValidators([Validators.required, customPasswordValidator()]);
+        passwordControl.setValidators([
+          Validators.required,
+          customPasswordValidator(),
+        ]);
       } else {
-        passwordControl.setValidators([Validators.required, Validators.minLength(8)]);
+        passwordControl.setValidators([
+          Validators.required,
+          Validators.minLength(8),
+        ]);
       }
       passwordControl.updateValueAndValidity({ emitEvent: false });
     });

frontend/src/app/shared/validator/index.ts

@@ -1,2 +1,2 @@
 export * from './email-validator';
-export * from './password-validator'
+export * from './password-validator';