Iterating over an array and setFieldValue doesn't work

[Kevin-Carlos]

So I have a use case where I've set up a drag n' drop file upload that parses .csv and returns me an array of key value pairs.

Minimal reproduction:

    if (data.length) {
      for (let i = 0; i < data.length - 1; i++) {
        form.setFieldValue("runtime.environment_vars", {
          [data[i][0]]: [data[i][1]],
        });
      }
    }

but only the last item within data gets reflected into the form values.
I've tried pre-emptively submitting the form between each as well as a couple other solutions that ended up not working as well.

Any help and insight would be great.

Formik v2.1.3