如何禁用Visual Studio 2017自动注入import语句？

Hey there, I’ve run into similar quirks with VS 2017’s JavaScript tooling before—let’s walk through how to stop those unwanted auto-injected lines when you use functions like clearTimeout.

Possible Causes #

This is almost always triggered by either a third-party extension you’ve installed, or Visual Studio’s built-in JavaScript/TypeScript Language Service trying to "help" by adding what it thinks are missing dependencies.

Step-by-Step Solutions #

• Disable Suspect Extensions
  Since you mentioned having several extensions installed, start by narrowing down which one might be causing this:

  1. Go to Tools > Extensions and Updates
  2. Navigate to the Installed tab, filter for JavaScript-related extensions
  3. Disable one extension at a time, restart VS, then test by adding clearTimeout to your file
  4. Repeat until the auto-injection stops—you’ve found the culprit (you can either keep it disabled or check for updates for that extension)

• Turn Off Auto-Import in Language Service Settings
  VS 2017’s built-in JS tooling has auto-import features that might be misfiring for local files:

  1. Open Tools > Options > Text Editor > JavaScript/TypeScript > Language Service
  2. Look for options like "Auto-import modules" or "Add missing imports"
  3. Uncheck these options, click OK, and restart VS to apply changes

• Mark Files as Non-Module (if applicable)
  If VS is treating your local JS file as a module (even if it’s not), it might try to inject dependencies. Add this comment at the very top of your file to tell VS to skip module-related auto-processing:

  // @ts-nocheck
  // @noflow
  

  Alternatively, remove any accidental import/export statements that might be triggering module mode.

• Reset Visual Studio Settings
  If all else fails, resetting your VS settings to default can eliminate misconfigured options:

  1. Go to Tools > Import and Export Settings
  2. Select "Reset all settings", follow the prompts to back up your current settings first
  3. After resetting, test the issue again

内容的提问来源于stack exchange，提问作者TheCuBeMan