code: function isConcatWithEmptyString(node) {
  		return node.operator === "+" && (
  			(node.left.type === "Literal" && node.left.value === "") ||
  			(node.right.type === "Literal" && node.right.value === "")
  		);
  	}
docs: Checks whether or not a node is a concatenating with an empty string.
  @param {ASTNode} node - A BinaryExpression node to check.
  @returns {boolean} Whether or not the node is a concatenating with an empty string.