JSON Extra

lang.json adds JSON support through jsonls, wired to the SchemaStore.nvim catalog for validation and completion against well-known schemas (package.json, tsconfig.json, and more), with Prettier formatting.

lang.typescript already contributes JSON Treesitter and Prettier formatting; the distinct value here is the JSON language server with SchemaStore, which no other extra provides.

Enable it

-- ~/.config/blak/lua/blak/user.lua
return {
  extras = {
    enabled = {
      "lang.json",
    },
  },
}

Because this extra adds a plugin (SchemaStore.nvim), run:

:BlakExtras sync

What it adds

Surface	Contribution
Treesitter	json, jsonc
Mason	prettier, prettierd
LSP	jsonls with SchemaStore schemas
Formatting	prettierd (fallback prettier) for json, jsonc
Plugin	b0o/SchemaStore.nvim

jsonls installs automatically through Mason (package json-lsp).

How schemas load

SchemaStore.nvim is pulled in lazily from the server’s before_init hook, so the schema catalog only loads when jsonls actually starts. JSON validation is enabled by default.

Install and verify

:BlakExtras sync
:BlakToolsInstall
:BlakTreesitterInstall
:BlakDoctor

Open a package.json and confirm completion and validation against its schema, and check :LspInfo for json-lsp.