Of my experience with VSCode, most applications that use JSON for configurations have support for JSONC (JSON with Comments).

Attempting to use comments in vercel.json throws an error on build:

Error: Invalid vercel.json file provided

I’d like support for comments in vercel.json so that something like this is valid:

1
{
2
  "$schema": "https://openapi.vercel.sh/vercel.json",
3

4
  // commands
5
  "buildCommand": "npm run build",
6
  "installCommand": "npm ci", // NOT "npm install"
7

8
  // server
9
  "framework": "express",
10
  "trailingSlash": false
11
}

It’d also be a nice bonus to allow for trailing commas!

While I could use a TypeScript file to include these syntax features, I prefer JSON for any top-level configuration files, and support for this syntax would be an appreciable addition.

If there is something I’m missing regarding this feature request—if JSONC is supported to an extent—I’d appreciate a heads-up.