refinement of LSP options and vim packages for TS/JS development

nix/vim/nvim-lspconfig.lua

@@ -53,7 +53,77 @@ local on_attach = function(client, bufnr)
 end
 
 nvim_lsp.diagnosticls.setup {
-    on_attach = on_attach
+    on_attach = on_attach;
+    filetypes = { 'javascript', 'javascriptreact', 'typescript', 'typescriptreact', 'css', 'scss', 'markdown', 'pandoc' },
+    init_options = {
+      linters = {
+        eslint = {
+          command = 'eslint',
+          rootPatterns = { '.git' },
+          debounce = 100,
+          args = { '--stdin', '--stdin-filename', '%filepath', '--format', 'json' },
+          sourceName = 'eslint',
+          parseJson = {
+            errorsRoot = '[0].messages',
+            line = 'line',
+            column = 'column',
+            endLine = 'endLine',
+            endColumn = 'endColumn',
+            message = '[eslint] ${message} [${ruleId}]',
+            security = 'severity'
+          },
+          securities = {
+            [2] = 'error',
+            [1] = 'warning'
+          }
+        },
+        markdownlint = {
+          command = 'markdownlint',
+          rootPatterns = { '.git' },
+          isStderr = true,
+          debounce = 100,
+          args = { '--stdin' },
+          offsetLine = 0,
+          offsetColumn = 0,
+          sourceName = 'markdownlint',
+          securities = {
+            undefined = 'hint'
+          },
+          formatLines = 1,
+          formatPattern = {
+            '^.*:(\\d+)\\s+(.*)$',
+            {
+              line = 1,
+              column = -1,
+              message = 2,
+            }
+          }
+        }
+      },
+      filetypes = {
+        javascript = 'eslint',
+        javascriptreact = 'eslint',
+        typescript = 'eslint',
+        typescriptreact = 'eslint',
+        markdown = 'markdownlint',
+        pandoc = 'markdownlint'
+      },
+      formatters = {
+        prettier = {
+          command = 'prettier',
+          args = { '--stdin-filepath', '%filename' }
+        }
+      },
+      formatFiletypes = {
+         css = 'prettier',
+         javascript = 'prettier',
+         javascriptreact = 'prettier',
+         json = 'prettier',
+         scss = 'prettier',
+         typescript = 'prettier',
+         typescriptreact = 'prettier'
+      }
+    }
 }
 
 nvim_lsp.elmls.setup{
@@ -61,7 +131,7 @@ nvim_lsp.elmls.setup{
 }
 nvim_lsp.tsserver.setup {
     on_attach = function(client)
-        -- Avoid conflict with prettier
+        -- Avoid conflict with prettier and eslint
         client.resolved_capabilities.document_formatting = false
         on_attach(client)
     end