Add eslint to check the code.

.forgejo/workflows/test.yaml

@@ -12,4 +12,5 @@ jobs:
         with:
           cache: "yarn"
       - run: yarn install
+      - run: yarn lint
       - run: yarn coverage

eslint.config.js

@@ -0,0 +1,23 @@
+import js from "@eslint/js";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+import {defineConfig, globalIgnores} from "eslint/config";
+
+export default defineConfig([
+	globalIgnores([".yarn/**", "coverage/**", "lib/**"]),
+	{
+		files: ["**/*.{js,mjs,cjs,ts,mts,cts}"],
+		plugins: {js},
+		extends: ["js/recommended"],
+	},
+	{
+		files: ["**/*.{js,mjs,cjs,ts,mts,cts}"],
+		languageOptions: {globals: {...globals.browser, ...globals.node}},
+	},
+	tseslint.configs.recommended,
+	{
+		rules: {
+			"@typescript-eslint/no-explicit-any": "off",
+		},
+	},
+]);

package.json

@@ -26,7 +26,8 @@
 		"build": "tsc && vite build",
 		"test": "vitest",
 		"coverage": "vitest run --coverage",
-		"format": "prettier . --write"
+		"format": "prettier . --write",
+		"lint": "eslint"
 	},
 	"type": "module",
 	"source": "src/library.ts",
@@ -36,11 +37,15 @@
 		"lib/**/*"
 	],
 	"devDependencies": {
+		"@eslint/js": "^9.30.0",
 		"@types/node": "^24.0.3",
 		"@vitest/coverage-v8": "^3.2.4",
+		"eslint": "^9.30.0",
+		"globals": "^16.2.0",
 		"prettier": "^3.6.0",
 		"ts-node": "^10.9.2",
 		"typescript": "^5.8.3",
+		"typescript-eslint": "^8.35.0",
 		"vite": "^6.3.5",
 		"vite-plugin-dts": "^4.5.4",
 		"vitest": "^3.2.4"