How do you format code on save in VS Code

问题:

I would like to automatically format TypeScript code using the build-in formatter when I save a file in Visual Studio Code.

I'm aware of the following options, but none of them is good enough:

• Format manually Shift + Alt + F
• Format on type "editor.formatOnType": true
  • It formats the line when you press enter. Unfortunatelly, it leaves it unformatted when you mouse-click another line or press up/down arrow.
• Use existing extension
  • I tried this one, but it does not seem to work too well.
• Use beautify "beautify.onSave": true
  • It does not work with TypeScript
• Write custom extension
  • It's tricky if you want to handle autosaves and builds correctly.

回答1:

As of September 2016 (VSCode 1.6), this is now officially supported.

Add the following to your settings.json file:

"editor.formatOnSave": true

回答2:

To automatically format code on save:

• Press Ctrl , to open user preferences

• Enter the following code in the opened settings file

  {
      "editor.formatOnSave": true
  }
  

• Save file

Source

回答3:

If you would like to auto format on save just with Javascript source, add this one into Users Setting (press Cmd, or Ctrl,):

"[javascript]": { "editor.formatOnSave": true }

回答4:

No need to add commands anymore. For those who are new to Visual Studio Code and searching for an easy way to format code on saving, kindly follow the below steps.

1. Open Settings by pressing [Cmd+,] in Mac or using the below screenshot.

2. Type 'format' in the search box and enable the option 'Format On Save'.

You are done. Thank you.

回答5:

For MAC user, add this line into your Default Settings

File path is: /Users/USER_NAME/Library/Application Support/Code/User/settings.json

"tslint.autoFixOnSave": true

Sample of the file would be:

{
    "window.zoomLevel": 0,
    "workbench.iconTheme": "vscode-icons",
    "typescript.check.tscVersion": false,
    "vsicons.projectDetection.disableDetect": true,
    "typescript.updateImportsOnFileMove.enabled": "always",
    "eslint.autoFixOnSave": true,
    "tslint.autoFixOnSave": true
}