Code formatting

Formatting on save is enabled by default for JavaScript, using TypeScript's built-in code formatting. But many JavaScript projects use other command-line code-formatting tools, such as Prettier. You can use one of these tools by specifying an external code formatter for JavaScript in your settings. See the configuration documentation for more information.
For example, if you have Prettier installed and on your PATH, you can use it to format JavaScript files by adding the following to your settings.json:
"language_overrides": {
"JavaScript": {
"format_on_save": {
"external": {
"command": "prettier",
"arguments": ["--stdin-filepath", "{buffer_path}"]