Add json files to ESLint configuration to enforce eol-last

Author: leeyi45

eslint.config.js

@@ -8,6 +8,7 @@ import reactPlugin from 'eslint-plugin-react';
 import reactHooksPlugin from 'eslint-plugin-react-hooks';
 import vitestPlugin from 'eslint-plugin-vitest';
 import globals from 'globals';
+import jsonParser from 'jsonc-eslint-parser';
 
 import tseslint from 'typescript-eslint';
 
@@ -31,9 +32,37 @@ export default tseslint.config(
       '**/coverage',
     ]
   },
-  js.configs.recommended,
   {
+    files: ['**/*.json'],
+    ignores: [
+      'src/java/**',
+      'package-lock.json' // Just in case someone accidentally creates one
+    ],
+    languageOptions: {
+      parser: jsonParser,
+      parserOptions: {
+        // Use JSONC so that comments in JSON files don't get treated as
+        // syntax errors
+        jsonSyntax: 'jsonc'
+      }
+    },
+    plugins: {
+      '@stylistic': stylePlugin,
+    },
+    rules: {
+      '@stylistic/eol-last': 'warn',
+    }
+  },
+  {
+    extends: [
+      js.configs.recommended,
+    ],
     name: 'Global JS Rules',
+    files: [
+      '**/*.*js',
+      '**/*.ts',
+      '**/*.tsx',
+    ],
     languageOptions: {
       globals: {
         ...globals.node,
@@ -73,13 +102,15 @@ export default tseslint.config(
       ],
     }
   },
-  ...tseslint.configs.recommended,
   {
+    extends: tseslint.configs.recommended,
     name: 'Global Typescript Rules',
     files: ['**/*.ts*'],
     languageOptions: {
       parser: tseslint.parser,
       parserOptions: {
+        // Prevent the parser from going any higher in the directory tree
+        // to find a tsconfig
         tsconfigRootDir: import.meta.dirname,
         project: true
       }

lib/buildtools/.gitignore

@@ -1 +1 @@
-bin/index.js
+bin/index.js

package.json

@@ -59,6 +59,7 @@
     "http-server": "^0.13.0",
     "husky": "^9.0.11",
     "jsdom": "^26.1.0",
+    "jsonc-eslint-parser": "^2.4.0",
     "typescript": "^5.8.2",
     "typescript-eslint": "^8.33.1",
     "vitest": "^3.2.3",

yarn.lock

@@ -2631,6 +2631,7 @@ __metadata:
     husky: "npm:^9.0.11"
     js-slang: "npm:^1.0.81"
     jsdom: "npm:^26.1.0"
+    jsonc-eslint-parser: "npm:^2.4.0"
     lodash: "npm:^4.17.21"
     react: "npm:^18.3.1"
     react-dom: "npm:^18.3.1"
@@ -3796,7 +3797,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"acorn@npm:^8.15.0":
+"acorn@npm:^8.15.0, acorn@npm:^8.5.0, acorn@npm:^8.9.0":
   version: 8.15.0
   resolution: "acorn@npm:8.15.0"
   bin:
@@ -5902,7 +5903,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"eslint-visitor-keys@npm:^3.4.3":
+"eslint-visitor-keys@npm:^3.0.0, eslint-visitor-keys@npm:^3.4.1, eslint-visitor-keys@npm:^3.4.3":
   version: 3.4.3
   resolution: "eslint-visitor-keys@npm:3.4.3"
   checksum: 10c0/92708e882c0a5ffd88c23c0b404ac1628cf20104a108c745f240a13c332a11aac54f49a22d5762efbffc18ecbc9a580d1b7ad034bf5f3cc3307e5cbff2ec9820
@@ -5995,6 +5996,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"espree@npm:^9.0.0":
+  version: 9.6.1
+  resolution: "espree@npm:9.6.1"
+  dependencies:
+    acorn: "npm:^8.9.0"
+    acorn-jsx: "npm:^5.3.2"
+    eslint-visitor-keys: "npm:^3.4.1"
+  checksum: 10c0/1a2e9b4699b715347f62330bcc76aee224390c28bb02b31a3752e9d07549c473f5f986720483c6469cf3cfb3c9d05df612ffc69eb1ee94b54b739e67de9bb460
+  languageName: node
+  linkType: hard
+
 "esprima@npm:^4.0.0":
   version: 4.0.1
   resolution: "esprima@npm:4.0.1"
@@ -7854,6 +7866,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"jsonc-eslint-parser@npm:^2.4.0":
+  version: 2.4.0
+  resolution: "jsonc-eslint-parser@npm:2.4.0"
+  dependencies:
+    acorn: "npm:^8.5.0"
+    eslint-visitor-keys: "npm:^3.0.0"
+    espree: "npm:^9.0.0"
+    semver: "npm:^7.3.5"
+  checksum: 10c0/1bef9f4f12122824e1d13ef651b7a8d16cbf6995bfd08fabb81df34ff0cf57f5c1c822dd5ee7aece0575fb1351538c8c5ce86f9b94d8f41bcd3bbe2773b62db3
+  languageName: node
+  linkType: hard
+
 "jsonschema@npm:^1.5.0":
   version: 1.5.0
   resolution: "jsonschema@npm:1.5.0"