code: function inferrableParameterVisitor(node) {
              if (ignoreParameters || !node.params) {
                  return;
              }
              node.params
                  .filter(
                      param =>
                          param.type === "AssignmentPattern" &&
                          param.left &&
                          param.right
                  )
                  .forEach(param => {
                      reportInferrableType(
                          param,
                          param.left.typeAnnotation,
                          param.right
                      );
                  });
          }
docs: Visits parameters
  @param {ASTNode} node the node to be visited
  @returns {void}