Fix build system for modern JS+github

  - update github workflow with currently supported versions
  - update ESLint config (moves to new format)

Author: droberts-ctrlo

.github/workflows/ci.yaml

@@ -13,12 +13,12 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x, 17.x]
+        node-version: [20.x, 22.x, 24.x, 25.x]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v2
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'yarn'

eslint.config.mjs

@@ -0,0 +1,39 @@
+import globals from "globals";
+import { defineConfig } from "eslint/config";
+
+export default defineConfig([
+	{ files: ["**/*.{js,mjs,cjs}"], languageOptions: { globals: {...globals.browser, ...globals.node, ...globals.worker} } },
+	{ files: ["test/**/*.{js,mjs,cjs}"], languageOptions: { globals: globals.jest } },
+	{
+		"rules": {
+			"indent": [
+				"error",
+				"tab",
+				{
+					"SwitchCase": 1
+				}
+			],
+			"linebreak-style": [
+				"error",
+				"unix"
+			],
+			"no-empty": [
+				2,
+				{
+					"allowEmptyCatch": true
+				}
+			],
+			"no-unused-vars": [
+				2,
+				{
+					"args": "none",
+					"caughtErrors": "none"
+				}
+			],
+			"semi": [
+				"error",
+				"always"
+			]
+		}
+	}
+]);

package.json

@@ -17,70 +17,21 @@
 		"url": "https://github.com/fengari-lua/fengari-interop/issues"
 	},
 	"homepage": "https://github.com/fengari-lua/fengari-interop",
-	"peerDependencies": {
-		"fengari": "^0.1.0"
-	},
+	"peerDependencies": { "fengari": "^0.1.0" },
 	"main": "src/js.js",
 	"directories": {
 		"lib": "src",
 		"test": "test"
 	},
 	"devDependencies": {
-		"eslint": "^8.3.0",
+		"eslint": "^9.39.1",
 		"fengari": "^0.1.0",
-		"jest": "^27.4.0"
+		"globals": "^16.5.0",
+		"jest": "^30.2.0"
 	},
 	"scripts": {
 		"lint": "eslint src/ test/",
 		"prepublishOnly": "git diff-index --quiet --cached HEAD -- && npm run lint && npm run test",
 		"test": "jest"
-	},
-	"eslintConfig": {
-		"env": {
-			"browser": true,
-			"es6": true,
-			"node": true,
-			"worker": true
-		},
-		"extends": "eslint:recommended",
-		"rules": {
-			"indent": [
-				"error",
-				"tab",
-				{
-					"SwitchCase": 1
-				}
-			],
-			"linebreak-style": [
-				"error",
-				"unix"
-			],
-			"no-empty": [
-				2,
-				{
-					"allowEmptyCatch": true
-				}
-			],
-			"no-unused-vars": [
-				2,
-				{
-					"args": "none"
-				}
-			],
-			"semi": [
-				"error",
-				"always"
-			]
-		},
-		"overrides": [
-			{
-				"files": [
-					"test/*.js"
-				],
-				"env": {
-					"jest": true
-				}
-			}
-		]
 	}
 }

src/js.js

@@ -91,7 +91,7 @@ if (typeof process !== "undefined") {
 
 const global_env = (function(Object) {
 	return typeof globalThis === 'object' ?
-		globalThis // eslint-disable-line no-undef
+		globalThis
 		: (this ?
 			// compat: strict mode is unsupported
 			this