Merge pull request #1431 from maxmind/dallas/use-typescript-eslint

Upgrade eslint v9 and use typescript-eslint

Author: dhogan8

.eslintignore

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-require-imports */
 const minFraud = require('@maxmind/minfraud-api-node');
 
 describe('client', () => {

.eslintrc.js

@@ -0,0 +1,39 @@
+import globals from "globals";
+import tseslint from "typescript-eslint";
+import js from "@eslint/js";
+import prettier from "eslint-config-prettier";
+
+export default tseslint.config(
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  prettier,
+  {
+    plugins: {
+      "@typescript-eslint": tseslint.plugin,
+    },
+
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.jest,
+      },
+
+      ecmaVersion: "latest",
+      sourceType: "module",
+
+      parserOptions: {
+        project: ["./tsconfig.json", "./tsconfig.eslint.json"],
+      },
+    },
+
+    rules: {
+      "@typescript-eslint/await-thenable": "error",
+      "prefer-arrow-callback": ["warn"],
+    },
+  }, {
+  files: ["**/*.ts", "**/*.js"],
+},
+  {
+    ignores: ["**/dist", "**/docs", "**/node_modules", "jest.config.js", "eslint.config.mjs"],
+  },
+);