gatsby-transformer-csv sort by integer field not working, is sorting as string

[AdamQuadmon]

Summary

I'm using gatsby-transformer-csv.
I want to sort by fieldNumber as integer.
Values are sorted as string even if displayed as integer using createTypes in gatsby-node.js
There is also a SO question from another user:
https://stackoverflow.com/questions/63508542/how-can-gatsby-graphql-sort-an-integer-field-numerically-rather-than-alphabetica

Relevant information

gatsby-node.js

exports.createSchemaCustomization = ({ actions }) => {
  const { createTypes } = actions
  const typeDefs = `
    type TestCsv implements Node @infer {
      numberField: Int
    }
  `
  createTypes(typeDefs)
}

test.csv

numberField
1
2
10
11
20

query

query MyQuery {
  allTestCsv(sort: {fields: numberField, order: DESC}) {
    nodes {
      numberField
    }
  }
}

output

{
  "data": {
    "allTestCsv": {
      "edges": [
        {
          "node": {
            "numberField": 1
          }
        },
        {
          "node": {
            "numberField": 10
          }
        },
        {
          "node": {
            "numberField": 11
          }
        },
        {
          "node": {
            "numberField": 2
          }
        },
        {
          "node": {
            "numberField": 20
          }
        }
      ]
    }
  },
  "extensions": {}
}

If I don't use the createType, values are displayed as strings and the order is the same

{
  "data": {
    "allTestCsv": {
      "edges": [
        {
          "node": {
            "numero": "1"
          }
        },
        {
          "node": {
            "numero": "10"
          }
        },
        {
          "node": {
            "numero": "11"
          }
        },
        {
          "node": {
            "numero": "2"
          }
        },
        {
          "node": {
            "numero": "20"
          }
        }
      ]
    }
  },
  "extensions": {}
}

[blainekasten]

I think @pvdz might know the answer to this. He was working on some performance related work in those files. or @vladar might know too

[samajammin]

@AdamQuadmon were you able to figure this out? I'm having the same issue. Thanks in advance!

[pvdz]

The Gatsby plugin is a very thin layer on top of the csvtojson package.

Additionally, according to the readme, it should generate numbers. These should be sortable numerically https://www.gatsbyjs.com/plugins/gatsby-transformer-csv/#parsing-algorithm

So I guess we'd need tos ee an example of your input csv to figure out what's up :) I don't know about Adam's issue (and I'm sorry I missed the ping).