[docgen] Update CONFIG.md

skip-checks: true

1 files changed, 47 insertions, 0 deletions

diff --git a/CONFIG.md b/CONFIG.md
index 0b228a06..ba4e1d84 100644
--- a/CONFIG.md
+++ b/CONFIG.md
@@ -29,6 +29,7 @@ that config.
 - [gopls](#gopls)
 - [graphql](#graphql)
 - [groovyls](#groovyls)
+- [haxe_language_server](#haxe_language_server)
 - [hie](#hie)
 - [hls](#hls)
 - [html](#html)
@@ -1653,6 +1654,52 @@ require'lspconfig'.groovyls.setup{}
     root_dir = root_pattern(".git") or vim.loop.os_homedir()
 ```
 
+## haxe_language_server
+
+https://github.com/vshaxe/haxe-language-server
+
+The Haxe language server can be built by running the following commands from
+the project's root directory:
+
+    npm install
+    npx lix run vshaxe-build -t language-server
+
+This will create `bin/server.js`. Note that the server requires Haxe 3.4.0 or
+higher.
+
+After building the language server, set the `cmd` setting in your setup
+function:
+
+```lua
+lspconfig.haxe_language_server.setup({
+  cmd = {"node", "path/to/bin/server.js"},
+})
+```
+
+By default, an HXML compiler arguments file named `build.hxml` is expected in
+your project's root directory. If your file is named something different,
+specify it using the `init_options.displayArguments` setting.
+
+
+```lua
+require'lspconfig'.haxe_language_server.setup{}
+
+  Commands:
+  
+  Default Values:
+    cmd = { "haxe-language-server" }
+    filetypes = { "haxe" }
+    init_options = {
+      displayArguments = { "build.hxml" }
+    }
+    root_dir = root_pattern("*.hxml")
+    settings = {
+      haxe = {
+        executable = "haxe"
+      }
+    }
+```
+
 ## hie
 
 https://github.com/haskell/haskell-ide-engine