Check if empty node output in n8n

[
   {
      "mostrar":"in,out",
      "label":"CURSO DE FORMAÇÃO EM TERAPEUTA AYURVEDA",
      "campo":"cursotitulo",
      "tipo":"titulo6",
      "colunas_in":"12",
      "colunas_out":"12"
   },
   {
      "mostrar":"in,out",
      "label":"Nome Completo",
      "campo":"nomecompleto",
      "tipo":"text",
      "colunas_in":"12",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"Data de nascimento",
      "campo":"data_nasc",
      "tipo":"data",
      "colunas_in":"6",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"CPF",
      "campo":"nrocpf",
      "tipo":"cpf",
      "colunas_in":"6",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"Estado Civil",
      "campo":"estado_civil",
      "tipo":"select_valor",
      "colunas_in":"6",
      "colunas_out":"4",
      "opcoes":[
         "Casado",
         "Solteiro",
         "Separado",
         "Viuvo"
      ],
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"Profissão",
      "campo":"profi",
      "tipo":"text",
      "colunas_in":"6",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"Email",
      "campo":"email",
      "tipo":"text",
      "colunas_in":"12",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"Telefone Celular",
      "campo":"telcelular",
      "tipo":"text",
      "placeholder":"(xx) x xxxx-xxxx",
      "colunas_in":"6",
      "colunas_out":"6",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"Telefone Residencial",
      "campo":"telresidencial",
      "tipo":"text",
      "placeholder":"(xx) x xxxx-xxxx",
      "colunas_in":"6",
      "colunas_out":"6"
   },
   {
      "mostrar":"in,out",
      "label":"Endereço",
      "campo":"logradouro",
      "tipo":"text",
      "colunas_in":"6",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"Cidade",
      "campo":"cid",
      "tipo":"text",
      "colunas_in":"6",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"CEP",
      "campo":"cep_user",
      "tipo":"text",
      "colunas_in":"6",
      "colunas_out":"4",
      "requerido":"1"
   },
   {
      "mostrar":"in,out",
      "label":"PAGAMENTO",
      "campo":"pagamento",
      "tipo":"titulo6",
      "colunas_in":"12",
      "colunas_out":"12"
   },
   {
      "mostrar":"in,out",
      "label":"Forma de Pagamento",
      "campo":"forma_pagamento",
      "tipo":"select_valor",
      "colunas_in":"6",
      "colunas_out":"6",
      "requerido":"1",
      "opcoes":[
         "À vista",
         "À prazo",
         "Boleto",
         "Cheque"
      ],
      "conditions":[
         {
            "when":"equal",
            "value":"À prazo",
            "action":{
               "show":[
                  "parcelas"
               ],
               "required":[
                  "parcelas"
               ]
            }
         }
      ]
   },
   {
      "mostrar":"in,out",
      "label":"Em quantas parcelas?",
      "campo":"parcelas",
      "tipo":"number",
      "colunas_in":"12",
      "colunas_out":"12",
      "classe":"hide"
   },
   {
      "mostrar":"in,out",
      "label":"Escola",
      "campo":"escola",
      "tipo":"select_valor",
      "colunas_in":"12",
      "colunas_out":"12",
      "requerido":"1",
      "opcoes":[
         "Semente da Paz",
         "Leveza do Ser",
         "Beija Flor",
         "La vie",
         "Karina Gomes"
      ],
      "aceita_recategorizar":"1"
   },
   {
      "mostrar":"in,out",
      "label":"TERMO DE AUTORIZAÇÃO",
      "campo":"termo",
      "tipo":"titulo6",
      "colunas_in":"12",
      "colunas_out":"12"
   },
   {
      "mostrar":"in,out",
      "campo":"autori",
      "tipo":"texto",
      "valor_padrao":"Eu, autorizo a gravar (minha imagem em vídeo ou fotografia) e veicular minha imagem e depoimentos em qualquer meios de comunicação para fins didáticos, de pesquisa e divulgação de conhecimento científico sem quaisquer ônus e restrições. Fica ainda autorizada, de livre e espontânea vontade, para os mesmos fins, a cessão de direitos da veiculação, não recebendo para tanto qualquer tipo de remuneração. ",
      "colunas_in":"12",
      "colunas_out":"12"
   },
   {
      "mostrar":"in,out",
      "label":"Eu concordo e autorizo",
      "campo":"concordancia",
      "tipo":"checkbox",
      "colunas_in":"12",
      "colunas_out":"12",
      "requerido":"1"
   }
]

import org.json.*;


JSONObject obj = new JSONObject(" .... ");
String pageName = obj.getJSONObject("pageInfo").getString("pageName");

JSONArray arr = obj.getJSONArray("posts");
for (int i = 0; i < arr.length(); i++)
{
    String post_id = arr.getJSONObject(i).getString("post_id");
    ......
}

var contacts = '{ "people" : [' +
'{ "firstName":"Joe" , "lastName":"Smith" },' +
'{ "firstName":"Tom" , "lastName":"Hardy" },' +
'{ "firstName":"Ben" , "lastName":"Stiller" } ]}';

var newObject = JSON.parse(contacts);

var eventsVariable = '"{events":[' +
    '{"location": "New York", "date": "May 1", "public": "true"},' +
    '{"location": "London", "date": "Apr 24", "public": "false"},' +
    '{"location": "San Frans", "date": "Nov 30", "public": "false"}]}';
    

Escapes or unescapes a JSON string removing traces of offending characters that could prevent parsing.

The following characters are reserved in JSON and must be properly escaped to be used in strings:

Backspace is replaced with \b
Form feed is replaced with \f
Newline is replaced with \n
Carriage return is replaced with \r
Tab is replaced with \t
Double quote is replaced with \"
Backslash is replaced with \\

{
  // Required
  "manifest_version": 3,
  "name": "My Extension",
  "version": "versionString",

  // Recommended
  "action": {...},
  "default_locale": "en",
  "description": "A plain text description",
  "icons": {...},

  // Optional
  "author": ...,
  "automation": ...,
  "background": {
    // Required
    "service_worker": "background.js",
    // Optional
    "type": ...
  },
  "chrome_settings_overrides": {...},
  "chrome_url_overrides": {...},
  "commands": {...},
  "content_capabilities": ...,
  "content_scripts": [{...}],
  "content_security_policy": {...},
  "converted_from_user_script": ...,
  "cross_origin_embedder_policy": {"value": "require-corp"},
  "cross_origin_opener_policy": {"value": "same-origin"},
  "current_locale": ...,
  "declarative_net_request": ...,
  "devtools_page": "devtools.html",
  "differential_fingerprint": ...,
  "event_rules": [{...}],
  "externally_connectable": {
    "matches": ["*://*.example.com/*"]
  },
  "file_browser_handlers": [...],
  "file_system_provider_capabilities": {
    "configurable": true,
    "multiple_mounts": true,
    "source": "network"
  },
  "homepage_url": "https://path/to/homepage",
  "host_permissions": [...],
  "import": [{"id": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}],
  "incognito": "spanning, split, or not_allowed",
  "input_components": ...,
  "key": "publicKey",
  "minimum_chrome_version": "versionString",
  "nacl_modules": [...],
  "natively_connectable": ...,
  "oauth2": ...,
  "offline_enabled": true,
  "omnibox": {
    "keyword": "aString"
  },
  "optional_host_permissions": ["..."],
  "optional_permissions": ["tabs"],
  "options_page": "options.html",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": ["tabs"],
  "platforms": ...,
  "replacement_web_app": ...,
  "requirements": {...},
  "sandbox": [...],
  "short_name": "Short Name",
  "storage": {
    "managed_schema": "schema.json"
  },
  "system_indicator": ...,
  "tts_engine": {...},
  "update_url": "https://path/to/updateInfo.xml",
  "version_name": "aString",
  "web_accessible_resources": [...]
}

var profile = {
  name: 'John',
  age: 25,
  isAdmin: false,
  courses: ['html', 'css', 'js']
};

var person = JSON.stringify(profile);

{
  "name": "portfolio",
  "version": "1.0.0",
  "description": "Serhii Yakymenko Site potrfolio.",
  "main": "gulpfile.js",
  "dependencies": {
    "browser-sync": "^2.26.7"
  },
  "devDependencies": {
    "gulp": "^4.0.2",
    "gulp-sass": "^4.1.0"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/serhii-edit/portfolio.git"
  },
  "author": "Serhii Yakymenko",
  "license": "ISC",
  "bugs": {
    "url": "https://github.com/serhii-edit/portfolio/issues"
  },
  "homepage": "https://github.com/serhii-edit/portfolio#readme"
}

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Deny",
            "Action": [
                "codecommit:GitPush",
                "codecommit:DeleteBranch",
                "codecommit:PutFile",
                "codecommit:MergePullRequestByFastForward"
            ],
            "Resource": "arn:aws:codecommit:us-east-2:80398EXAMPLE:MyDemoRepo",
            "Condition": {
                "StringEqualsIfExists": {
                    "codecommit:References": [
                        "refs/heads/master"   
                    ]
                },
                "Null": {
                    "codecommit:References": false
                }
            }
        }
    ]
}

{
  "status": "Successful",
  "message": "The transaction was processed successfully",
  "data": {
    "provider_response_code": "00",
    "charge_status": "Processing | WaitingForOTP | ProcessingOTP | Successful | Failed | OfflineValidated | OfflineNotified",
    "provider": "Quickteller",
    "errors": null,
    "error": null,
    "charge_token": "Kz5Dev7BenV9HmLNB"
  }
}

"pages": [
	{
		"id": "references",
		"content": "<div style='width: 1024px; height: 580px; background-color: #fafafa;'><div style='padding: 20px;'><b>Sources:</b><br/><br/>Active LCDs, Noridian Healthcare Solutions.<br/>https://med.noridianmedicare.com/web/jeb/policies<br/><br/>Chapter 13 – Local  Coverage Determinations, Medicare Program Integrity Manual, Centers for Medicare & Medicaid Services.<br/>https://www.cms.gov/Regulations-and-Guidance/Regulations-and-Guidance.html<br/><br/>Indexes, Centers for Medicare & Medicaid Services.<br/>https://www.cms.gov/medicare-coverage-database/indexes/national-and-local-indexes.aspx<br/><br/>Local Coverage Determinations Create Inconsistency in Medicare Coverage, Office of Inspector General, Department of Health and Human Services.<br/>http://oig.hhs.gov<br/><br/>Medicare Coverage Determination Process, Centers for Medicare & Medicaid Services.<br/>https://www.cms.gov/Medicare/Medicare.html<br/><br/>Regional Map, CMS Regional Offices, Centers for Medicare & Medicaid Services.<br/>https://www.cms.gov/About-CMS/About-CMS.html<br/><br/>United States Department of Health and Human Services.<br/>www.hhs.gov</div></div>"
	}
],

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
    {
      "type": "node",
      "request": "attach",
      // "processId": "${command:PickProcess}",
      "protocol": "inspector",
      "restart": true,
      "name": "Launch Programa",
      "skipFiles": ["<node_internals>/**"]
    }
  ]
}

{
    "compilerOptions": {
        "baseUrl": "src"
    }
}

{
  "name": "@my-org/bar",
  "version": "1.0.0",
  "description": "A test package to be published on my private Gitlab instance",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Arman Safikhani",
  "license": "ISC"
}

... 
 "contributes": {
    "commands": [
      {
        "command": "exampleApp.openWebview",
        "title": "Open webview" // This is the command users will type in Command Palette to open the webview
      }
    ]
  },
...