Setup ESLint

Author: fabon-f

.eslintrc.cjs

@@ -0,0 +1,61 @@
+module.exports = {
+	root: true,
+	plugins: ["simple-import-sort"],
+	extends: [
+		"eslint:recommended",
+		"plugin:@typescript-eslint/strict-type-checked",
+		"plugin:@typescript-eslint/stylistic-type-checked",
+		"prettier",
+	],
+	parser: "@typescript-eslint/parser",
+	parserOptions: {
+		ecmaVersion: "latest",
+		sourceType: "module",
+		project: ["./tsconfig.json"],
+		tsconfigRootDir: __dirname,
+	},
+	ignorePatterns: [
+		"dist",
+		".eslintrc.cjs",
+		".prettierrc.js",
+		"src/temporal.d.ts",
+	],
+	rules: {
+		camelcase: "error",
+		"default-param-last": "error",
+		eqeqeq: "error",
+		"no-console": "error",
+		"no-eval": "error",
+		"@typescript-eslint/consistent-type-exports": "error",
+		"@typescript-eslint/consistent-type-imports": "error",
+		"@typescript-eslint/restrict-template-expressions": [
+			"error",
+			{
+				allowNever: true,
+			},
+		],
+		"simple-import-sort/imports": "error",
+		"simple-import-sort/exports": "error",
+	},
+	overrides: [
+		{
+			files: ["src/**/*.test.ts", "script/**/*.ts"],
+			rules: {
+				"no-console": "off",
+				"@typescript-eslint/ban-ts-comment": "off",
+				"@typescript-eslint/no-empty-function": "off",
+				"@typescript-eslint/no-explicit-any": "off",
+				"@typescript-eslint/no-non-null-assertion": "off",
+				"@typescript-eslint/no-unsafe-argument": "off",
+				"@typescript-eslint/no-unsafe-assignment": "off",
+				"@typescript-eslint/no-unsafe-call": "off",
+				"@typescript-eslint/no-unsafe-member-access": "off",
+				"@typescript-eslint/no-unsafe-return": "off",
+				"@typescript-eslint/no-unused-vars": [
+					"error",
+					{ argsIgnorePattern: "^_" },
+				],
+			},
+		},
+	],
+};

package.json

@@ -43,8 +43,13 @@
 		"@js-temporal/polyfill": "^0.4.4",
 		"@tsconfig/strictest": "^2.0.2",
 		"@types/node": "^20.11.6",
+		"@typescript-eslint/eslint-plugin": "^6.21.0",
+		"@typescript-eslint/parser": "^6.21.0",
 		"babel-plugin-replace-import-extension": "^1.1.4",
 		"consola": "^3.2.3",
+		"eslint": "^8.56.0",
+		"eslint-config-prettier": "^9.1.0",
+		"eslint-plugin-simple-import-sort": "^12.0.0",
 		"prettier": "3.2.5",
 		"rimraf": "^5.0.5",
 		"temporal-polyfill": "^0.2.0",