add eslint.config.mjs

.vscode/settings.json

@@ -4,8 +4,12 @@
     "**/.yarn": true
   },
   "typescript.enablePromptUseWorkspaceTsdk": true,
-  "editor.formatOnSave": true,
-  "editor.codeActionsOnSave": ["source.fixAll", "source.organizeImports", "source.sortMembers"],
+  "editor.formatOnSave": false,
+  "editor.codeActionsOnSave": [
+    "source.fixAll",
+    "source.organizeImports",
+    "source.sortMembers",
+  ],
   "editor.defaultFormatter": "esbenp.prettier-vscode",
   "[ignore]": {
     "editor.defaultFormatter": "foxundermoon.shell-format"

eslint.config.mjs

@@ -0,0 +1,171 @@
+import { fixupConfigRules, fixupPluginRules } from "@eslint/compat";
+import { FlatCompat } from "@eslint/eslintrc";
+import js from "@eslint/js";
+import tsParser from "@typescript-eslint/parser";
+import deprecation from "eslint-plugin-deprecation";
+import _import from "eslint-plugin-import";
+import tailwindcss from "eslint-plugin-tailwindcss";
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+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: [
+        "**/*.js",
+        "**/*.jsx",
+        "**/lib",
+        "**/build",
+        "**/dist",
+        "**/.yarn",
+        "**/.husky",
+        "**/generated",
+        "**/bundle.c?js",
+        "**/.pnp*",
+        "**/generated",
+    ],
+}, ...fixupConfigRules(compat.extends(
+    "prettier",
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:@typescript-eslint/strict",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:vitest/recommended",
+    "plugin:react/recommended",
+    "plugin:react-hooks/recommended",
+    "plugin:tailwindcss/recommended",
+    "plugin:@next/next/recommended",
+)), {
+    plugins: {
+        deprecation,
+        import: fixupPluginRules(_import),
+        tailwindcss: fixupPluginRules(tailwindcss),
+    },
+
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+        },
+
+        parser: tsParser,
+        ecmaVersion: 12,
+        sourceType: "module",
+
+        parserOptions: {
+            ecmaFeatures: {
+                jsx: true,
+            },
+
+            project: ["./tsconfig.eslint.json", "./packages/**/tsconfig.json"],
+            allowAutomaticSingleRunInference: true,
+            tsconfigRootDir: "/Volumes/git/fern-platform",
+        },
+    },
+
+    settings: {
+        react: {
+            version: "18.3.1",
+        },
+
+        next: {
+            rootDir: "packages/fern-docs/bundle/",
+        },
+    },
+
+    rules: {
+        "@typescript-eslint/no-unused-vars": ["error", {
+            varsIgnorePattern: "^_",
+            argsIgnorePattern: "^_",
+            ignoreRestSiblings: true,
+        }],
+
+        "@typescript-eslint/no-namespace": ["error", {
+            allowDeclarations: true,
+        }],
+
+        "@typescript-eslint/explicit-module-boundary-types": ["off"],
+        "@typescript-eslint/no-floating-promises": ["error"],
+
+        "@typescript-eslint/no-empty-function": ["error", {
+            allow: ["private-constructors", "protected-constructors", "decoratedFunctions"],
+        }],
+
+        "@typescript-eslint/await-thenable": "error",
+        "@typescript-eslint/no-base-to-string": "error",
+        "@typescript-eslint/no-extraneous-class": "off",
+        "@typescript-eslint/no-invalid-void-type": "off",
+        "@typescript-eslint/prefer-optional-chain": "off",
+        "@typescript-eslint/strict-boolean-expressions": "off",
+        "linebreak-style": ["error", "unix"],
+        "no-console": "error",
+
+        "no-empty": ["error", {
+            allowEmptyCatch: true,
+        }],
+
+        "no-unused-vars": "off",
+        "tailwindcss/classnames-order": "off",
+
+        quotes: ["error", "double", {
+            avoidEscape: true,
+        }],
+
+        semi: ["error", "always"],
+        indent: "off",
+        "object-shorthand": ["error"],
+        "deprecation/deprecation": "warn",
+
+        eqeqeq: ["error", "always", {
+            null: "never",
+        }],
+
+        curly: "error",
+        "react/react-in-jsx-scope": "off",
+        "react/prop-types": "off",
+        "tailwindcss/no-custom-classname": "off",
+        "@next/next/no-html-link-for-pages": "off",
+        "@next/next/no-img-element": "off",
+
+        "react-hooks/exhaustive-deps": ["warn", {
+            additionalHooks: "(useMemoOne|useCallbackOne)",
+        }],
+    },
+}, {
+    files: ["**/*.ts", "**/*.mts", "**/*.cts", "**/*.tsx"],
+
+    rules: {
+        "@typescript-eslint/explicit-module-boundary-types": ["error", {
+            allowHigherOrderFunctions: false,
+        }],
+    },
+}, {
+    files: ["packages/fdr-sdk/**/*", "servers/fdr-deploy/**/*", "servers/fdr/**/*"],
+
+    rules: {
+        "@typescript-eslint/explicit-module-boundary-types": "off",
+        "@typescript-eslint/no-explicit-any": "off",
+        "@typescript-eslint/no-unused-vars": "off",
+        "@typescript-eslint/no-floating-promises": "off",
+        "@typescript-eslint/no-base-to-string": "off",
+    },
+}, {
+    files: ["servers/fdr/**/*", "servers/fern-bot/**/*"],
+
+    rules: {
+        eqeqeq: "off",
+        "no-console": "off",
+    },
+}, {
+    files: ["packages/fern-docs/**/*"],
+
+    rules: {
+        "@typescript-eslint/no-explicit-any": "off",
+    },
+}];

package.json

@@ -64,6 +64,9 @@
     "@babel/preset-env": "^7.26.0",
     "@babel/preset-react": "^7.25.9",
     "@babel/preset-typescript": "^7.26.0",
+    "@eslint/compat": "^1.2.4",
+    "@eslint/eslintrc": "^3.2.0",
+    "@eslint/js": "^9.17.0",
     "@next/eslint-plugin-next": "14.2.9",
     "@playwright/test": "^1.47.1",
     "@tailwindcss/forms": "^0.5.7",
@@ -90,6 +93,7 @@
     "eslint-plugin-vitest": "^0.5.4",
     "execa": "^5.1.1",
     "express": "^4.20.0",
+    "globals": "^15.14.0",
     "http-proxy-middleware": "^3.0.3",
     "husky": "^8.0.1",
     "immer": "^9.0.15",