enforce a few eslint rules

.eslintrc.js

@@ -11,7 +11,7 @@ module.exports = {
     "plugin:sonarjs/recommended",
     "eslint:recommended"
   ],
-  plugins: ["jsdoc", "promise", "html", "import", "sonarjs"],
+  plugins: [ "jsdoc", "promise", "html", "import", "sonarjs" ],
   parserOptions: {
     ecmaVersion: 2020,
     sourceType: "module"
@@ -22,15 +22,19 @@ module.exports = {
   },
   rules: {
     "node/no-unsupported-features/es-syntax": 0,
-    "no-unused-vars": ["error", { "argsIgnorePattern": "^_" }],
-    "sonarjs/cognitive-complexity": ["warn", 40],
+    "no-unused-vars": [ "error", { "argsIgnorePattern": "^_" } ],
+    "sonarjs/cognitive-complexity": [ "warn", 40 ],
     "sonarjs/no-duplicate-string": 0,
     "semi" : "error",
+    "no-trailing-spaces": "error",
+    "array-bracket-spacing": [ "error", "always" ],
+    "comma-spacing": "error",
+    "object-curly-spacing": [ "error", "always" ],
   },
   overrides: [
     {
-      files: [ 'cypress/**/*'],
-      extends: [ 
+      files: [ 'cypress/**/*' ],
+      extends: [
         "plugin:cypress/recommended"
       ],
       env: {
@@ -42,12 +46,12 @@ module.exports = {
       },
       rules: {
         // with ci, instrumented is not created before linter
-        "import/no-unresolved": [2, { ignore: ['instrumented'] }],
+        "import/no-unresolved": [ 2, { ignore: [ 'instrumented' ] } ],
         "node/no-missing-import": 0
       }
     },
     {
-      files: [ 'docs/**/*'],
+      files: [ 'docs/**/*' ],
       rules: { // md files have example that don't need a strict checking
         "no-undef": 0,
         "import/no-unresolved": 0,