whileTrue and contexts with artillery and TS definitions

[djkato]

I run the following ts file like this: artillery run ./src/main.ts:
The test seems to run away (artillery eats all my ram), all logs show undefined and my api process seems unaffected.
⠙ Fetching next products, cursor: undefined
I can't find any examples of what I'm trying to do but defined in TS, so what am I doing wrong?
Do I even in TS have to tell whileTrue to point to a TS function in a different file?

import { OrderDirection, ProductOrderField } from "../generated/graphql";
import { query_products } from "./graphql/queries-storefront";
export const config = {
  target: "http://localhost:8000",
  phases: [
    {
      duration: 60,
      arrivalRate: 1,
      rampTo: 5,
      name: "Warm up phase",
    },
    {
      duration: 60,
      arrivalRate: 50,
      rampTo: 100,
      name: "Ramp up load",
    },
  ],
  plugins: {
    "publish-metrics": [
      {
        type: "open-telemetry",
        serviceName: "Artillery-Saleor",
        metrics: {
          exporter: "otlp-proto",
          endpoint: "{{$env.GRAFANA_OTLP_ENDPOINT}}",
          headers: {
            Authorization: "Basic {{$env.GRAFANA_AUTH_CODE}}",
          },
        },
        traces: {
          exporter: "otlp-proto",
          endpoint: "{{$env.GRAFANA_OTLP_ENDPOINT}}",
          headers: {
            Authorization: "Basic {{$env.GRAFANA_AUTH_CODE}}",
          },
        },
      },
    ],
  },
};

export const scenarios = [
  {
    name: "All product search",
    flow: [
      {
        loop: [
          {
            whileTrue: (context, next) => {
              return next(!!context.hasNextPage);
            },
            log: "Fetching next products, cursor: {{endCursor}}",
            post: {
              url: "/graphql",
              json: {
                query: query_products, //is a string
                variables: {
                  channel: "zakladny",
                  first: 100,
                  after: "{{endCursor}}",
                  sort_direction: OrderDirection.Desc,
                  sort_field: ProductOrderField.Date,
                },
              },
              capture: [
                {
                  json: "$.data.products.pageInfo.hasNextPage",
                  as: "hasNextPage",
                },
                {
                  json: "$.data.products.pageInfo.endCursor",
                  as: "endCursor",
                },
              ],
            },
          },
        ],
      },
    ],
  },
];

[djkato]

also, here it's mentioned that

By default, captures are strict. If a capture rule fails because nothing matches, any subsequent requests in the scenario will not run, and that virtual user will stop making requests.

But if my cursor is always undefined, why doesn't the loop stop? I'd understand it as "if captured var fails (cursor) it stops the loop".