chore: modernize linting to use eslint 9

bench/index.ts

@@ -1,4 +1,4 @@
-import * as assert from "assert";
+import assert from "assert";
 import { spawnSync } from "child_process";
 import { existsSync } from "fs";
 import { resolve } from "path";

bin/build_wasm.ts

@@ -13,7 +13,6 @@ if (!platform && process.argv[2]) {
 if (process.argv[2] === '--prebuild') {
   const cmd = `docker build --platform=${platform.toString().trim()} -t llhttp_wasm_builder .`;
 
-  // eslint-disable-next-line no-console
   console.log(`> ${cmd}\n\n`);
   execSync(cmd, { stdio: 'inherit' });
 
@@ -43,7 +42,6 @@ if (process.argv[2] === '--docker') {
   }
   cmd += ` --mount type=bind,source=${WASM_SRC}/build,target=/home/node/llhttp/build llhttp_wasm_builder npm run wasm`;
 
-  // eslint-disable-next-line no-console
   console.log(`> ${cmd}\n\n`);
   execSync(cmd, { cwd: WASM_SRC, stdio: 'inherit' });
   process.exit(0);

bin/generate.ts

@@ -6,7 +6,7 @@ import { dirname, resolve } from 'path';
 import { CHeaders, HTTP } from '../src/llhttp';
 
 // https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
-// eslint-disable-next-line max-len
+// eslint-disable-next-line @stylistic/js/max-len
 const semverRE = /^(?<major>0|[1-9]\d*)\.(?<minor>0|[1-9]\d*)\.(?<patch>0|[1-9]\d*)(?:-(?<prerelease>(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+(?<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/;
 
 const C_FILE = resolve(__dirname, '../build/c/llhttp.c');

eslint.config.mjs

@@ -0,0 +1,66 @@
+import stylisticJs from '@stylistic/eslint-plugin-js'
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import globals from 'globals';
+
+export default tseslint.config(
+  { ignores: ["lib", "examples", "bench"] },
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  ...tseslint.configs.stylistic,
+  {
+    "languageOptions": {
+      "parser": tseslint.parser,
+      "parserOptions": {
+        "lib": ["es2023"],
+        "module": "commonjs",
+        "moduleResolution": "node",
+        "target": "es2022",
+
+        "strict": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "include": [
+          "bin/**/*.ts",
+          "src/**/*.ts",
+          "test/**/*.ts"
+        ],
+        "outDir": "./lib",
+        "declaration": true,
+        "pretty": true,
+        "sourceMap": true
+      },
+      "globals": {
+        ...globals.commonjs,
+        ...globals.node,
+        ...globals.es6
+      },
+    },
+  },
+  {
+    plugins: {
+      '@stylistic/js': stylisticJs
+    },
+    files: [
+      "bin/**/*.ts",
+      'bench/**/*.ts',
+      'src/**/*.ts',
+      'test/**/*.ts',
+    ],
+    rules: {
+    '@stylistic/js/max-len': [ 2, {
+      'code': 120,
+      'ignoreComments': true
+    } ],
+      "@stylistic/js/array-bracket-spacing": ["error", "always"],
+      "@stylistic/js/operator-linebreak": ["error", "after"],
+      "@stylistic/js/linebreak-style": ["error", "unix"],
+      "@stylistic/js/brace-style": ["error", "1tbs", { "allowSingleLine": true }],
+      '@stylistic/js/indent': ["error", 2, {
+        "SwitchCase": 1,
+        "FunctionDeclaration":  { "parameters": "first" },
+        "FunctionExpression": { "parameters": "first" }
+      }],
+    }
+  }
+);

examples/wasm.ts

@@ -7,7 +7,7 @@
  */
 import { readFileSync } from 'fs';
 import { resolve } from 'path';
-import * as constants from '../build/wasm/constants';
+import constants from '../build/wasm/constants';
 
 const bin = readFileSync(resolve(__dirname, '../build/wasm/llhttp.wasm'));
 const mod = new WebAssembly.Module(bin);