fix: Update ESLint config for TypeScript ESLint v6

  - Add @typescript-eslint/recommended extension
  - Configure unused vars and explicit any as warnings
  - Add argsIgnorePattern for underscore-prefixed params
  - Disable explicit-any rule for library code

Author: t-ho

.eslintrc.json

@@ -15,6 +15,7 @@
         "createDefaultProgram": true
       },
       "extends": [
+        "plugin:@typescript-eslint/recommended",
         "plugin:@angular-eslint/recommended",
         "plugin:@angular-eslint/template/process-inline-templates"
       ],
@@ -34,7 +35,9 @@
             "prefix": "app",
             "style": "kebab-case"
           }
-        ]
+        ],
+        "@typescript-eslint/no-unused-vars": "warn",
+        "@typescript-eslint/no-explicit-any": "warn"
       }
     },
     {

projects/ngx-ui-loader/.eslintrc.json

@@ -31,7 +31,14 @@
             "prefix": "lib",
             "style": "camelCase"
           }
-        ]
+        ],
+        "@typescript-eslint/no-unused-vars": [
+          "warn",
+          {
+            "argsIgnorePattern": "^_"
+          }
+        ],
+        "@typescript-eslint/no-explicit-any": "off"
       }
     },
     {