Merge pull request #111 from nathonius/ci/109/eslint

Upgrade eslint

.editorconfig

@@ -0,0 +1,12 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = tab
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = false

eslint.config.mjs

@@ -0,0 +1,51 @@
+// @ts-check
+
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+import UnusedImportsPlugin from "eslint-plugin-unused-imports";
+import PrettierConfig from "eslint-config-prettier";
+
+export default tseslint.config(
+	{
+		ignores: ["node_modules/", "main.js", "eslint.config.mjs"],
+	},
+	eslint.configs.recommended,
+	tseslint.configs.eslintRecommended,
+	...tseslint.configs.recommendedTypeChecked,
+	{
+		languageOptions: {
+			parserOptions: {
+				project: true,
+				tsconfigRootDir: import.meta.dirname,
+			},
+		},
+		plugins: {
+			"unused-imports": UnusedImportsPlugin,
+		},
+		rules: {
+			"@typescript-eslint/restrict-template-expressions": "warn",
+			"@typescript-eslint/no-unsafe-assignment": "warn",
+			"@typescript-eslint/no-unsafe-argument": "warn",
+			"@typescript-eslint/no-unsafe-member-access": "warn",
+			"@typescript-eslint/no-redundant-type-constituents": "warn",
+			"@typescript-eslint/unbound-method": "warn",
+			"@typescript-eslint/no-this-alias": "warn",
+			"@typescript-eslint/no-empty-function": "warn",
+			"@typescript-eslint/consistent-type-imports": "error",
+
+			// replaced by 'unused-imports/no-unused-vars'
+			"@typescript-eslint/no-unused-vars": "off",
+			"unused-imports/no-unused-imports": "error",
+			"unused-imports/no-unused-vars": [
+				"warn",
+				{
+					vars: "all",
+					varsIgnorePattern: "^_",
+					args: "after-used",
+					argsIgnorePattern: "^_",
+				},
+			],
+		},
+	},
+	PrettierConfig,
+);