JSON

JSON support is available natively in Zed.

• Tree Sitter: tree-sitter/tree-sitter-json
• Language Server: zed-industries/json-language-server

JSONC

Zed also supports a super-set of JSON called JSONC, which allows single line comments (//) in JSON files. While editing these files you can use cmd-/ (macOS) or ctrl-/ (Linux) to toggle comments on the current line or selection.

JSONC Prettier Formatting

If you use files with the *.jsonc extension when using Format Document or have format_on_save enabled, Zed invokes Prettier as the formatter. Prettier has an outstanding issue where it will add trailing commas to files with a jsonc extension. JSONC files which have a .json extension are unaffected.

To workaround this behavior you can add the following to your .prettierrc

{
  "overrides": [
    {
      "files": ["*.jsonc"],
      "options": {
        "parser": "json",
        "trailingComma": "none"
      }
    }
  ]
}