trim

trim trims the incoming string, just like your favorite programming language's TrimPrefix, TrimSuffix or TrimSpaces command.

"type": "trim",
"config": {
    "type": "<string>",
    "value": "<string>"
}

type - either left, right or spaces. Left is equivalent of TrimPrefix, right=TrimSuffix and spaces=TrimSpaces (default=spaces)
value - string suffix or prefix to be removed. For instance, if you want csrf_FOO to become FOO then the value would be csrf_

{
   "type": "trim",
   "config": {
       "type": "left",
       "value": "REQID_"
   }
}

req_body() -> json_path(path="requestId") -> trim(type="left", value="REQID_")

This will extract the requestId field from the request body and remove the "REQID_" prefix.

http_req_header(header="X-Custom-Token") -> trim(type="right", value="_TOKEN")

This will extract the X-Custom-Token header value and remove the "_TOKEN" suffix.

res_body() -> json_path(path="message") -> trim(type="spaces")

This will extract the message field from the response body and remove leading and trailing whitespace.