f=geojson not returning geojson for queryFeatures

I saw this https://github.com/Esri/arcgis-rest-js/commit/79bc776ca91ddca4685eef2cf4c8d1ed2f4a4117, but i’m not able to return geojson using the example in the docs:

require("isomorphic-fetch");
require("isomorphic-form-data");

const {queryFeatures} = require('@esri/arcgis-rest-feature-layer');

queryFeatures({
  url: "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/3",
  where: "STATE_NAME = 'Alaska'",
  f: 'geojson',
}).then(result => {
    // result is still in arcgis json
    console.log(result);
});

[jgravois]

the fix for this should be as easy as adding f to IQueryFeaturesOptions and the array of whitelisted custom params here.

and @COV-GIS is right. PRs are always welcome. 😄

[tomwayson]

@dkuida those were added in #592 and will be released soon along w/ #589