feat: add eslint language server (#1273)

1 files changed, 130 insertions, 0 deletions

diff --git a/lua/lspconfig/eslint.lua b/lua/lspconfig/eslint.lua
new file mode 100644
index 00000000..a3ddfd17
--- /dev/null
+++ b/lua/lspconfig/eslint.lua
@@ -0,0 +1,130 @@
+local configs = require 'lspconfig/configs'
+local util = require 'lspconfig/util'
+local lsp = vim.lsp
+
+local get_eslint_client = function()
+  local active_clients = lsp.get_active_clients()
+  for _, client in ipairs(active_clients) do
+    if client.name == 'eslint' then
+      return client
+    end
+  end
+  return nil
+end
+local function fix_all(opts)
+  opts = opts or {}
+
+  local eslint_lsp_client = get_eslint_client()
+  if eslint_lsp_client == nil then
+    return
+  end
+
+  local request
+  if opts.sync or false then
+    request = function(bufnr, method, params)
+      eslint_lsp_client.request(method, params, nil, bufnr)
+    end
+  else
+    request = function(bufnr, method, params)
+      eslint_lsp_client.request_sync(method, params, nil, bufnr)
+    end
+  end
+
+  local bufnr = util.validate_bufnr(opts.bufnr or 0)
+  request(0, 'workspace/executeCommand', {
+    command = 'eslint.applyAllFixes',
+    arguments = {
+      {
+        uri = vim.uri_from_bufnr(bufnr),
+        version = lsp.util.buf_versions[bufnr],
+      },
+    },
+  })
+end
+
+local bin_name = 'vscode-eslint-language-server'
+configs.eslint = {
+  default_config = {
+    cmd = { bin_name, '--stdio' },
+    filetypes = {
+      'javascript',
+      'javascriptreact',
+      'javascript.jsx',
+      'typescript',
+      'typescriptreact',
+      'typescript.tsx',
+    },
+    root_dir = util.root_pattern('.eslintrc.json', '.eslintrc.js', 'package.json', 'tsconfig.json', '.git'),
+    settings = {
+      validate = 'off',
+      packageManager = 'npm',
+      useESLintClass = false,
+      codeActionOnSave = {
+        enable = false,
+        mode = 'all',
+      },
+      format = false,
+      quiet = false,
+      onIgnoredFiles = 'off',
+      rulesCustomizations = {},
+      run = 'onType',
+      nodePath = vim.NIL,
+      codeAction = {
+        disableRuleComment = {
+          enable = true,
+          location = 'separateLine',
+        },
+        showDocumentation = {
+          enable = true,
+        },
+      },
+    },
+    handlers = {
+      ['eslint/openDoc'] = function(_, result)
+        if not result then
+          return
+        end
+        vim.cmd('!open ' .. result.url)
+        return {}
+      end,
+      ['eslint/confirmESLintExecution'] = function(_, result)
+        if not result then
+          return
+        end
+        return 4 -- approved
+      end,
+    },
+  },
+  commands = {
+    EslintFixAll = {
+      function()
+        fix_all { sync = true, bufnr = 0 }
+      end,
+      description = 'Fix all eslint problems for this buffer',
+    },
+  },
+  docs = {
+    description = [[
+https://github.com/hrsh7th/vscode-langservers-extracted
+
+vscode-eslint-language-server: A linting engine for JavaScript / Typescript
+
+`vscode-eslint-language-server` can be installed via `npm`:
+```sh
+npm i -g vscode-langservers-extracted
+```
+
+vscode-eslint-language-server provides an EslintFixAll command that can be used to format document on save
+```vim
+autocmd BufWritePre <buffer> <cmd>EslintFixAll<CR>
+```
+
+See [vscode-eslint](https://github.com/microsoft/vscode-eslint/blob/55871979d7af184bf09af491b6ea35ebd56822cf/server/src/eslintServer.ts#L216-L229) for configuration options.
+
+Additional messages you can handle: eslint/probeFailed, eslint/noLibrary, eslint/noConfig
+Messages already handled in lspconfig: eslint/openDoc, eslint/confirmESLintExecution
+]],
+  },
+}
+
+configs.eslint.fix_all = fix_all