not be able to query data after reading from csv

I am reading data from a csv file. I want to query data with a very simple statement:

dfd.read_csv(dataPath)
.then(df => {
  let query_df = df.query({ column: "A", is: "==", to: "foo"});
  query_df.print();
})

it gives me this error: ReferenceError: bar is not defined and “bar” is one of the values in column “A”

[JhennerTigreros]

I open a pull request with the fix 😃

[JhennerTigreros]

Yes, the problem is in eval function that is used in frame.js

if (eval(`${elem}${operator}${value}`)) {
  new_data.push(data_value);
  new_index.push(index[i]);
}

becase eval function resolve the string to NG==NG and the engine try to get the variable NG that doesn’t exits, I fix this changing the snippet code to

if (eval(`elem${operator}value`)) {
  new_data.push(data_value);
  new_index.push(index[i]);
}

and get the correct output

change it locally while fixing on main branch, the file is in /danfojs-node/dist/core/frame.js