senderName: validateSenderName()

in dashboards-notifications/public/pages/Emails/CreateSender.tsx [87:139]
50 lines of code
3 McCabe index (conditional complexity)

      senderName: validateSenderName(senderName),
      email: validateEmail(email),
      host: validateHost(host),
      port: validatePort(port),
    };
    setInputErrors(errors);
    return !Object.values(errors).reduce(
      (errorFlag, error) => errorFlag || error.length > 0,
      false
    );
  };

  return (
    <>
      <EuiTitle size="l">
        <h1>{`${props.edit ? 'Edit' : 'Create'} SMTP sender`}</h1>
      </EuiTitle>

      <EuiSpacer />
      <ContentPanel
        bodyStyles={{ padding: 'initial' }}
        title="Configure sender"
        titleSize="s"
        panelStyles={{ maxWidth: 1000 }}
      >
        <CreateSenderForm
          senderName={senderName}
          setSenderName={setSenderName}
          email={email}
          setEmail={setEmail}
          host={host}
          setHost={setHost}
          port={port}
          setPort={setPort}
          encryption={encryption}
          setEncryption={setEncryption}
          inputErrors={inputErrors}
          setInputErrors={setInputErrors}
        />
      </ContentPanel>

      <EuiSpacer />
      <EuiFlexGroup justifyContent="flexEnd" style={{ maxWidth: 1024 }}>
        <EuiFlexItem grow={false}>
          <EuiButtonEmpty href={`#${ROUTES.EMAIL_SENDERS}`}>
            Cancel
          </EuiButtonEmpty>
        </EuiFlexItem>
        <EuiFlexItem grow={false}>
          <EuiButton
            fill
            isLoading={loading}
            onClick={async () => {