update eslint config

eslint.config.cjs

@@ -0,0 +1,73 @@
+const {
+    defineConfig,
+    globalIgnores,
+} = require("eslint/config");
+
+const tsParser = require("@typescript-eslint/parser");
+const typescriptEslint = require("@typescript-eslint/eslint-plugin");
+const parser = require("svelte-eslint-parser");
+const globals = require("globals");
+const js = require("@eslint/js");
+
+const {
+    FlatCompat,
+} = require("@eslint/eslintrc");
+
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+module.exports = defineConfig([{
+    languageOptions: {
+        parser: tsParser,
+        sourceType: "module",
+        ecmaVersion: 2020,
+
+        parserOptions: {
+            extraFileExtensions: [".svelte"],
+        },
+
+        globals: {
+            ...globals.browser,
+            ...globals.node,
+        },
+    },
+
+    extends: compat.extends(
+        "plugin:svelte/recommended",
+        "plugin:@typescript-eslint/recommended",
+        "prettier",
+    ),
+
+    plugins: {
+        "@typescript-eslint": typescriptEslint,
+    },
+
+    settings: {
+        "svelte3/typescript": () => require("typescript"),
+    },
+}, globalIgnores(["**/*.cjs"]), {
+    files: ["**/*.svelte"],
+
+    languageOptions: {
+        parser: parser,
+
+        parserOptions: {
+            parser: "@typescript-eslint/parser",
+        },
+    },
+}, globalIgnores([
+    "**/.DS_Store",
+    "**/node_modules",
+    "build",
+    ".svelte-kit",
+    "package",
+    "**/.env",
+    "**/.env.*",
+    "!**/.env.example",
+    "**/pnpm-lock.yaml",
+    "**/package-lock.json",
+    "**/yarn.lock",
+])]);