1 files changed, 52 insertions, 0 deletions
diff --git a/lua/lspconfig/configs/rescriptls.lua b/lua/lspconfig/configs/rescriptls.lua
new file mode 100644
index 00000000..f7869b34
--- /dev/null
+++ b/lua/lspconfig/configs/rescriptls.lua
@@ -0,0 +1,52 @@
+local util = require 'lspconfig.util'
+
+return {
+  default_config = {
+    cmd = { 'rescript-language-server', '--stdio' },
+    filetypes = { 'rescript' },
+    root_dir = util.root_pattern('bsconfig.json', 'rescript.json', '.git'),
+    settings = {},
+    init_options = {
+      extensionConfiguration = {
+        -- buggy, prompts much too often, superseded by incrementalTypechecking, below
+        askToStartBuild = false,
+
+        allowBuiltInFormatter = true, -- lower latency
+        incrementalTypechecking = { -- removes the need for external build process
+          enabled = true,
+          acrossFiles = true,
+        },
+        cache = { projectConfig = { enabled = true } }, -- speed up latency dramatically
+        codeLens = true,
+        inlayHints = { enable = true },
+      },
+    },
+  },
+  docs = {
+    description = [[
+https://github.com/rescript-lang/rescript-vscode/tree/master/server
+
+ReScript Language Server can be installed via npm:
+```sh
+npm install -g @rescript/language-server
+```
+
+See [package.json](https://github.com/rescript-lang/rescript-vscode/blob/master/package.json#L139)
+for init_options supported.
+
+For example, in order to disable the `inlayHints` option:
+```lua
+require'lspconfig'.pylsp.setup{
+  settings = {
+    rescript = {
+      settings = {
+        inlayHints = { enable = false },
+      },
+    },
+  }
+}
+```
+]],
+    root_dir = [[root_pattern('bsconfig.json', 'rescript.json', '.git')]],
+  },
+}