Migrate to eslint flat config

eslint.config.mjs

@@ -0,0 +1,59 @@
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import tsParser from "@typescript-eslint/parser";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all,
+});
+
+export default [
+  {
+    ignores: ["**/out", "**/dist", "**/*.d.ts", "**/dist", "test/fixtures/"],
+  },
+  ...compat.extends(
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "prettier",
+  ),
+  {
+    plugins: {
+      "@typescript-eslint": typescriptEslint,
+    },
+
+    languageOptions: {
+      parser: tsParser,
+      ecmaVersion: 2018,
+      sourceType: "module",
+    },
+
+    rules: {
+      "no-empty": [
+        "error",
+        {
+          allowEmptyCatch: true,
+        },
+      ],
+
+      "no-unused-vars": "off",
+      "no-control-regex": "off",
+
+      "@typescript-eslint/no-unused-vars": [
+        "warn",
+        {
+          argsIgnorePattern: "^_|warnings",
+          caughtErrors: "none",
+        },
+      ],
+
+      "@typescript-eslint/no-non-null-assertion": "off",
+      "@typescript-eslint/no-explicit-any": "off",
+    },
+  },
+];

package.json

@@ -32,6 +32,8 @@
     "yamljs": "^0.3.0"
   },
   "devDependencies": {
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.12.0",
     "@types/diff": "^5.2.3",
     "@types/har-format": "^1.2.16",
     "@types/jsesc": "^3.0.3",
@@ -63,10 +65,10 @@
     "test": "cross-env NODE_OPTIONS=\"--enable-source-maps --unhandled-rejections=strict\" npx tape dist/test/test.js",
     "coverage": "c8 --check-coverage npm run test",
     "prelint": "npm run compile",
-    "lint": "eslint src --ext ts",
+    "lint": "eslint src",
     "format": "prettier --write .",
     "prefix": "npm run compile",
-    "fix": "eslint src --ext ts --fix",
+    "fix": "eslint src --fix",
     "prepare": "npx husky && npm run compile && npx tree-sitter build --wasm node_modules/tree-sitter-bash --output dist/tree-sitter-bash.wasm",
     "pregen-test": "npm run compile",
     "gen-test": "node --enable-source-maps ./dist/tools/gen-test.js",

src/Request.ts

@@ -718,7 +718,7 @@ function parseRawForm(
         break;
       }
       const [name, value] = lines[i].split(": ", 2);
-      if (!name === undefined || !value === undefined) {
+      if (name === undefined || value === undefined) {
         return null;
       }
       if (name.toLowerCase() === "content-disposition") {

src/generators/dart.ts

@@ -243,7 +243,6 @@ export function _toDart(requests: Request[], warnings: Warnings = []): string {
       s += "  final res = await http.Response.fromStream(stream);\n";
     }
 
-    /* eslint-disable no-template-curly-in-string */
     s +=
       "  final status = res.statusCode;\n" +
       "  if (status != 200) throw Exception('http.send" +
@@ -262,7 +261,6 @@ export function _toDart(requests: Request[], warnings: Warnings = []): string {
     if (hasData) s += ", body: data";
     s += ");\n";
 
-    /* eslint-disable no-template-curly-in-string */
     s +=
       "  final status = res.statusCode;\n" +
       "  if (status != 200) throw Exception('http." +

src/generators/ruby/httparty.ts

@@ -1,4 +1,3 @@
-import { has } from "../../utils.js";
 import { warnIfPartsIgnored } from "../../Warnings.js";
 import { Word, eq } from "../../shell/Word.js";
 import { parse, COMMON_SUPPORTED_ARGS } from "../../parse.js";