From c45853d0813f1869b7739bcd7329ddb3e75f05e7 Mon Sep 17 00:00:00 2001
From: Justin Hernandez <justin.hernandez@self.xyz>
Date: Thu, 16 Oct 2025 20:43:29 -0700
Subject: [PATCH] speed up prettier and eslint (#1295)

* speed up prettier and eslint

* throw error

* turn off
---
 app/.eslintrc.cjs | 29 ++++++++++-------------------
 app/.gitignore    |  6 ++++++
 app/package.json  |  8 ++++----
 3 files changed, 20 insertions(+), 23 deletions(-)

diff --git a/app/.eslintrc.cjs b/app/.eslintrc.cjs
index 20cf3787c..cb1509f8d 100644
--- a/app/.eslintrc.cjs
+++ b/app/.eslintrc.cjs
@@ -34,24 +34,6 @@ module.exports = {
   ],
   settings: {
     react: { version: 'detect' },
-    'import/resolver': {
-      typescript: {
-        alwaysTryTypes: true,
-        project: './tsconfig.json',
-        extensions: [
-          '.ts',
-          '.tsx',
-          '.native.ts',
-          '.native.tsx',
-          '.web.ts',
-          '.web.tsx',
-          '.ios.ts',
-          '.ios.tsx',
-          '.android.ts',
-          '.android.tsx',
-        ],
-      },
-    },
     'import/ignore': ['react-native'],
   },
   rules: {
@@ -169,7 +151,7 @@ module.exports = {
     '@typescript-eslint/no-namespace': 'off',
     'no-case-declarations': 'off',
     'react/no-children-prop': 'off',
-    'import/no-unresolved': 'error',
+    'import/no-unresolved': 'off', // TypeScript handles this
     '@typescript-eslint/ban-ts-comment': 'off',
     'no-empty': 'off',
 
@@ -188,6 +170,14 @@ module.exports = {
     '@typescript-eslint/indent': 'off',
   },
   overrides: [
+    {
+      // Enable TypeScript project service for source files for faster parsing
+      files: ['src/**/*.{ts,tsx}'],
+      parserOptions: {
+        project: true,
+        EXPERIMENTAL_useProjectService: true,
+      },
+    },
     {
       files: ['docs/examples/**/*.ts'],
       rules: {
@@ -218,6 +208,7 @@ module.exports = {
       },
       parserOptions: {
         project: './tsconfig.test.json',
+        EXPERIMENTAL_useProjectService: true,
       },
       rules: {
         // Allow console logging and relaxed typing in tests
diff --git a/app/.gitignore b/app/.gitignore
index 6397bff3c..32956c13b 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -74,6 +74,12 @@ yarn-error.log
 # testing
 /coverage
 
+# linting cache
+.eslintcache
+
+# prettier cache
+.cache/
+
 .env
 **/Pods/
 
diff --git a/app/package.json b/app/package.json
index 72bffcf7e..dbb798992 100644
--- a/app/package.json
+++ b/app/package.json
@@ -24,8 +24,8 @@
     "clean:xcode": "rm -rf ~/Library/Developer/Xcode/DerivedData",
     "clean:xcode-env-local": "rm -f ios/.xcode.env.local",
     "find:type-imports": "node scripts/find-type-import-issues.mjs",
-    "fmt": "yarn prettier --check .",
-    "fmt:fix": "yarn prettier --write .",
+    "fmt": "yarn prettier --check --cache .",
+    "fmt:fix": "yarn prettier --write --cache .",
     "format": "yarn nice",
     "ia": "yarn install-app",
     "imports:fix": "node ./scripts/alias-imports.cjs",
@@ -34,8 +34,8 @@
     "install-app:setup": "yarn install && yarn build:deps && yarn setup:android-deps && cd ios && bundle install && scripts/pod-install-with-cache-fix.sh && cd ..",
     "ios": "yarn build:deps && node scripts/run-ios-simulator.cjs",
     "ios:fastlane-debug": "yarn reinstall && bundle exec fastlane --verbose ios internal_test",
-    "lint": "eslint .",
-    "lint:fix": "eslint --fix .",
+    "lint": "eslint . --cache --cache-location .eslintcache",
+    "lint:fix": "eslint --fix . --cache --cache-location .eslintcache",
     "mobile-deploy": "node scripts/mobile-deploy-confirm.cjs both",
     "mobile-deploy:android": "node scripts/mobile-deploy-confirm.cjs android",
     "mobile-deploy:ios": "node scripts/mobile-deploy-confirm.cjs ios",