To fix Cursor AI not autocompleting TypeScript, open the Command Palette (Cmd+Shift+P or Ctrl+Shift+P), run “TypeScript: Restart TS server,” and verify that AI Completions and Tab Completion are enabled in Cursor settings. If completions still fail, clear the Cursor cache folder, check for extension conflicts by launching in safe mode, and ensure your project’s TypeScript version matches the one shown in Cursor’s status bar.

Why Cursor AI Stops Autocompleting TypeScript

Several factors can cause Cursor’s AI autocompletion to fail in TypeScript projects. Understanding these causes helps you identify the right solution quickly.

TypeScript language server issues are the most frequent culprit. Cursor relies on a healthy TypeScript language server to analyze your code and provide accurate completions, and when the language server crashes, stalls, or provides incorrect diagnostics, autocompletion suffers. Incorrect workspace configuration can also prevent completions from appearing, since Cursor needs proper project detection to apply the right context for AI suggestions. Third-party extensions that modify editor behavior may override or conflict with Cursor’s AI completion triggers, and an outdated Cursor version can cause compatibility issues with newer TypeScript features or language server protocols.

Step-by-Step Fixes for TypeScript Autocompletion

Fix 1: Restart the TypeScript Language Server

The TypeScript language server powers much of Cursor’s understanding of your code. Restarting it often resolves stalled completions.

Open the Command Palette with Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux), then type “TypeScript: Restart TS server” and select the option. Alternatively, you can add this keybinding for quick access:

{
  "key": "cmd+shift+r",
  "command": "typescript.restartTsServer"
}

After restarting, wait a few moments for the server to reinitialize. You should see a notification in the bottom status bar indicating the TypeScript server is ready. Test completions by typing in a TypeScript file.

If restarting doesn’t help, check the TypeScript version being used. Cursor displays the active TypeScript version in the status bar. Click on it to switch between versions or select “Use Workspace Version” if your project has a local TypeScript installation.

Fix 2: Verify Cursor Settings for TypeScript

Cursor provides specific settings that control AI autocompletion behavior. Check these settings to ensure completions are enabled.

Open Settings with Cmd+, (macOS) or Ctrl+, (Windows/Linux), then search for “Completions”. Verify these settings are configured correctly:

For TypeScript-specific behavior, search for “typescript” in settings and check:

Save changes and restart Cursor to ensure all settings take effect.

Fix 3: Clear Cursor Cache and Reindex Project

Corrupted cache files can prevent completions from appearing correctly. Clearing the cache forces Cursor to rebuild its understanding of your project.

Close Cursor completely, then navigate to the cache directory:

Delete the contents of the Cache folder. Also clear the workspace state:

Restart Cursor and open your TypeScript project. The reindexing process may take a few minutes for larger projects, but completions should resume once complete.

Fix 4: Check for Extension Conflicts

Third-party extensions can interfere with Cursor’s completion system. Identifying conflicting extensions helps isolate the issue.

Launch Cursor in safe mode by holding Shift while clicking the Cursor icon. This disables all user-installed extensions temporarily. Test whether autocompletion works in safe mode.

If completions work in safe mode, systematically re-enable extensions to find the culprit. Enable half your extensions first, test completions, then narrow down by enabling smaller groups.

Common extension types that cause conflicts include:

Fix 5: Update Cursor and TypeScript

Using outdated versions can cause compatibility issues with newer TypeScript syntax or language server features.

Check for Cursor updates by clicking the gear icon in the bottom-left corner and selecting “Check for Updates”. Install any available updates.

Also verify your project’s TypeScript version matches what Cursor is using. In your project directory, check the TypeScript version:

npx tsc --version

Compare this with the TypeScript version shown in Cursor’s status bar. If there’s a mismatch, click the TypeScript version in the status bar and select “Use Workspace Version” to use your project’s TypeScript.

For projects using TypeScript 5.x features, ensure Cursor is running a compatible TypeScript version. Update your project’s TypeScript if necessary:

npm install typescript@latest --save-dev

Fix 6: Check tsconfig.json Configuration

Your TypeScript configuration affects what completions Cursor can provide. Incorrect settings may limit autocomplete suggestions.

Open your project’s tsconfig.json and verify these settings:

{
  "compilerOptions": {
    "moduleResolution": "bundler",
    "target": "ES2020",
    "module": "ESNext",
    "strict": true,
    "jsx": "react-jsx",
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": ["src/**/*"],
  "exclude": ["node_modules"]
}

Ensure the "include" section covers all TypeScript files where you want completions. If files are in directories not covered by “include”, Cursor won’t provide completions for them.

Fix 7: Verify Network and AI Service Connection

Cursor’s AI completions require an active connection to AI services. Network issues can prevent completions from loading.

Check your internet connection and ensure Cursor has network access. Corporate networks may require firewall configuration.

Open Cursor’s settings and verify the AI service endpoint is reachable. Look for “AI Endpoint” or similar settings in the advanced configuration section.

If you’re using a VPN or proxy, try disconnecting temporarily to see if completions resume. Some network configurations interfere with Cursor’s AI service communication.

Fix 8: Reset Cursor User Data

If all other fixes fail, resetting Cursor to default settings removes corrupted configurations that may be causing the issue.

First, backup your settings and keybindings if desired. Then, delete the User data folder:

Keep backups of any custom extensions or settings you want to preserve. After deletion, restart Cursor and configure settings from scratch. This often resolves persistent autocompletion issues.

Diagnostic Tips

Check the Output panel in Cursor by selecting “View > Output” and choosing “TypeScript” from the dropdown. Error messages here often indicate specific problems with the language server.

Monitor the status bar at the bottom of the Cursor window. Watch for indicators showing TypeScript server status and any error icons. A red or yellow indicator suggests a problem with the TypeScript integration.

Test completions in multiple TypeScript files. If completions work in some files but not others, the issue relates to specific files or their configurations rather than a general Cursor problem.

Try creating a new TypeScript file in your project. If completions work in new files but not existing ones, the problem may relate to specific file content or syntax errors preventing proper parsing.

Summary

Work through these fixes systematically, starting with restarting the TypeScript language server and verifying settings, then clearing cache and checking for updates before attempting more drastic steps like resetting user data. If completions remain unavailable after working through all solutions, the Cursor support forums or GitHub issues page may provide specific guidance for your situation.

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