function onFlowErrors()

in website/_webpack/js/tryFlow.js [436:487]
50 lines of code
7 McCabe index (conditional complexity)

    function onFlowErrors(errors) {
      if (errorsNode) {
        if (errors.length) {
          removeChildren(errorsNode);
          errorsNode.appendChild(printErrors(errors, editor));
        } else {
          errorsNode.innerText = 'No errors!';
        }
      }

      if (jsonNode) {
        removeChildren(jsonNode);
        jsonNode.appendChild(
          document.createTextNode(JSON.stringify(errors, null, 2))
        );
      }

      if (astNode) {
        state.flow
        .then((flowProxy) => {
          flowProxy.supportsParse()
          .then(supportsParse => {
            if (supportsParse) {
              const options = {
                esproposal_class_instance_fields: true,
                esproposal_class_static_fields: true,
                esproposal_decorators: true,
                esproposal_export_star_as: true,
                esproposal_optional_chaining: true,
                esproposal_nullish_coalescing: true,
                types: true,
              };
              flowProxy.parse(editor.getValue(), options).then(ast => {
                removeChildren(astNode);
                astNode.appendChild(
                  document.createTextNode(JSON.stringify(ast, null, 2))
                );
                astNode.dataset.disabled = "false";
              });
            } else if (astNode.dataset.disabled !== "true") {
              astNode.dataset.disabled = "true";
              removeChildren(astNode);
              astNode.appendChild(
                document.createTextNode(
                  "AST output is not supported in this version of Flow."
                )
              );
            }
          })
        });
      }
    }