Fix.

node_modules/@babel/helper-get-function-arity/README.md

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+# @babel/helper-get-function-arity
+
+> Helper function to get function arity
+
+See our website [@babel/helper-get-function-arity](https://babeljs.io/docs/en/next/babel-helper-get-function-arity.html) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/helper-get-function-arity
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/helper-get-function-arity --dev
+```