How to set jsonls to hide the errors for comments?

1

I’m using jsonls as a language server for JSON file. It works fine without having comments in JSON file like tsconfig.json in which jsonls shows a lot of errors like this;

image
image1920×1439 493 KB

Also, I know that JSON doesn’t allow comments in it, but tsconfg.json originally had comments when it was generated.

Is there anyone who knows how to prevent these errors by configuring something?

2

The original tsconfig.json was very likely in JSON5 format which allows comments.

I don’t know if the language server supports JSON5 or if you need to install support for the corresponding filetype.

Hope this helps.

3

:set filetype=jsonc might help

4

I was annoyed by this and copied some logic I had for ignoring some tsserver errors. It looks something like this:

local opd = vim.lsp.with(vim.lsp.diagnostic.on_publish_diagnostics)
require("lspconfig").jsonls.setup({
        capabilities = capabilities,
        filetypes = { "json", "jsonc", "json5" },
        init_options = {
                provideFormatter = false,
        },
        handlers = {
                ["textDocument/publishDiagnostics"] = function(err, result, ctx, config)
                        -- jsonls doesn't really support json5
                        -- remove some annoying errors
                        if string.match(result.uri, "%.json5$", -6) and result.diagnostics ~= nil then
                                local idx = 1
                                while idx <= #result.diagnostics do
                                        -- "Comments are not permitted in JSON."
                                        if result.diagnostics[idx].code == 521 then
                                                table.remove(result.diagnostics, idx)
                                        else
                                                idx = idx + 1
                                        end
                                end
                        end
                        opd(err, result, ctx, config)
                end,
        },
})

From my dotfiles

1 Like