1 files changed, 39 insertions, 0 deletions
diff --git a/scripts/lua/mason-scripts/mason-lspconfig/generate.lua b/scripts/lua/mason-scripts/mason-lspconfig/generate.lua
new file mode 100644
index 00000000..2fa58692
--- /dev/null
+++ b/scripts/lua/mason-scripts/mason-lspconfig/generate.lua
@@ -0,0 +1,39 @@
+local a = require "mason-core.async"
+local path = require "mason-core.path"
+local _ = require "mason-core.functional"
+local lspconfig_server_mapping = require "mason-lspconfig.mappings.server"
+local script_utils = require "mason-scripts.utils"
+
+local MASON_LSPCONFIG_DIR = path.concat { vim.loop.cwd(), "lua", "mason-lspconfig" }
+
+local function get_lspconfig(name)
+    return require(("lspconfig.server_configurations.%s"):format(name))
+end
+
+---@async
+local function create_lspconfig_filetype_map()
+    local filetype_map = {}
+
+    for _, server_name in ipairs(_.keys(lspconfig_server_mapping.lspconfig_to_package)) do
+        local config = get_lspconfig(server_name)
+        for _, filetype in ipairs(config.default_config.filetypes or {}) do
+            if not filetype_map[filetype] then
+                filetype_map[filetype] = {}
+            end
+            table.insert(filetype_map[filetype], server_name)
+            table.sort(filetype_map[filetype])
+        end
+    end
+
+    script_utils.write_file(
+        path.concat { MASON_LSPCONFIG_DIR, "mappings", "filetype.lua" },
+        "return " .. vim.inspect(filetype_map),
+        "w"
+    )
+end
+
+a.run_blocking(function()
+    a.wait_all {
+        create_lspconfig_filetype_map,
+    }
+end)