code: function isConcatWithEmptyString(node) {
      return node.operator === "+" && (
          (isEmptyString(node.left) && !astUtils.isStringLiteral(node.right)) ||
          (isEmptyString(node.right) && !astUtils.isStringLiteral(node.left))
      );
  }
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.