chore(functional): restructure and extend functional modules (#703)

1 files changed, 17 insertions, 0 deletions

diff --git a/lua/nvim-lsp-installer/core/functional/relation.lua b/lua/nvim-lsp-installer/core/functional/relation.lua
new file mode 100644
index 00000000..d9786a6a
--- /dev/null
+++ b/lua/nvim-lsp-installer/core/functional/relation.lua
@@ -0,0 +1,17 @@
+local fun = require "nvim-lsp-installer.core.functional.function"
+
+local _ = {}
+
+_.equals = fun.curryN(function(expected, value)
+    return value == expected
+end, 2)
+
+_.prop_eq = fun.curryN(function(property, value, tbl)
+    return tbl[property] == value
+end, 3)
+
+_.prop_satisfies = fun.curryN(function(predicate, property, tbl)
+    return predicate(tbl[property])
+end, 3)
+
+return _