function containsOnlyIdentifiers(node) {
            if (node.type === "Identifier") {
                return true
            }

            if (node.type === "MemberExpression") {
                if (node.object.type === "Identifier") {
                    return true
                }
                if (node.object.type === "MemberExpression") {
                    return containsOnlyIdentifiers(node.object)
                }
            }

            return false
        }
Check to see if a node contains only identifers
@param {ASTNode} node The node to check
@returns {boolean} Whether or not the node contains only identifers