feat(mason-lspconfig): add :LspInstall and :LspUninstall commands (#35)

These should be in complete parity with the nvim-lsp-installer commands.
Now even better than before.

1 files changed, 8 insertions, 0 deletions

diff --git a/lua/mason-core/optional.lua b/lua/mason-core/optional.lua
index 10af8ccb..5710ce0c 100644
--- a/lua/mason-core/optional.lua
+++ b/lua/mason-core/optional.lua
@@ -93,6 +93,14 @@ function Optional:if_present(fn)
     return self
 end
 
+---@param fn fun(value: any)
+function Optional:if_not_present(fn)
+    if not self:is_present() then
+        fn(self._value)
+    end
+    return self
+end
+
 function Optional:is_present()
     return self._value ~= nil
 end