node soap remove xmlns attribute from method

It's happened the same to me, cause node-soap add by default a xmlns inside the envelope and I need to replace. Finally I found a solution, maybe not the best, but could be usseful for someone.

You can override the data that you send on your request, so you can replace whatever you want, included the envelope.

You have the possibility to includ options (object) when the method it´s called:

Client.method(args, callback, options)

include this object like options:

{
    transformRequest: [
        function (data, headers) {
            return data.replace(
               `xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"`,
                ``
            );
        },
    ],
}

Finally the calling to method looks like this:

client[method](
    params,
    function (err, result) {
        if (err) console.log(err, "<<<<<ERROR");
        else console.log(result);
    }, {
        transformRequest: [
            function (data, headers) {
                return data.replace(
                  `xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"`,
                  ``
                );
            },
        ],
    }
)

With this you override the data. I hope will be useful for someone who needs to change the envelope created by default.

The other answer from @Charly https://stackoverflow.com/a/72039697/990642 using transformRequest didn't work for me, the request would hang and I couldn't isolate why. I didn't evaluate strong-soap as a replacement.

Instead I used postProcess like so:

client[method](
  params,
  (err, result) => {
    // callback...
  },
  {
    postProcess: (xml: string) => {
      return xml.replace(
        '<MethodName xmlns="https://webservice.com">',
        '<MethodName>'
      );
    },
  }
)

Where xml is the HTTP request body and you can perform any manipulations you want on that string.