From 3214c5004e7d3d4871cb4d60b0efd45f83294573 Mon Sep 17 00:00:00 2001
From: Adam <ad@adamthomann.com>
Date: Mon, 23 Oct 2017 04:30:36 -0400
Subject: [PATCH] docs - Add helper-get-function-arity readme  [skip ci]
 (#6532)

* Add README to babel-helper-get-function-arity

* Use javascript template

* Address code review

* Comment out ellipsis
---
 .../babel-helper-get-function-arity/README.md  | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/packages/babel-helper-get-function-arity/README.md b/packages/babel-helper-get-function-arity/README.md
index 1058da9e1e..d341c9ce35 100644
--- a/packages/babel-helper-get-function-arity/README.md
+++ b/packages/babel-helper-get-function-arity/README.md
@@ -1,5 +1,21 @@
 # @babel/helper-get-function-arity
 
+Function that returns the number of arguments that a function takes.
+* Examples of what is considered an argument can be found at [MDN Web Docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length)
+
 ## Usage
 
-TODO
+```javascript
+import getFunctionArity from "@babel/helper-get-function-arity";
+
+function wrap(state, method, id, scope) {
+  // ...
+  if (!t.isFunction(method)) {
+    return false;
+  }
+
+  const argumentsLength = getFunctionArity(method);
+
+  // ...
+}
+```