I am trying to use the nebula.gl library in Observable and was able to require it into the notebook (see issue requiring nebula.gl - #2 by severo) but I am unable to find the DrawPolygonMode within nebula.gl - see notebook link below
I am trying to reproduce this nebula.gl and deck.gl example https://codesandbox.io/s/deckgl-and-nebulagl-editablegeojsonlayer-no-react-forked-l0n65?file=/app.js:0-86 in Observable
Any help would be appreciated 
I have no experience whatsoever with nebula or deck, but you might be looking for drawPolygon:
Chrome’s DevTools have a quite powerful search function that allows you to search in all loaded resources. You can access it through Command+Option+F (Mac) or Control+Shift+F (Windows/Linux).
Thanks @mootari for the help. But I can’t find that search section in the Chrome dev tools (MacOS) - is it under Sources? Also, would you know how I would access this variable from an Observable cell?
Make sure that the dev tools are focused when you use the above shortcut. Alternatively use Command+Shift+P to open the panel/drawer search and type “search”.
Have you tried specifying mode: "drawPolygon" in your layer options?
Thanks I was able to find the search result you showed by first clicking on dev tools and then using the shortcut. This should help sort this out.
However, specifying mode: "drawPolygon" is still giving a drawPolygon is not defined.
maybe
mode: 'drawPolygon',
Thanks @severo and @mootari - sorry I missed the quotes around the variable and now there is not an error.
Now, I just have to try and implement the layer correctly in the deckgl visualization. Currently, when I add the layer to the deckgl visualization nothing is showing up and I’m having to comment out a section in the layer definition otherwise I get a circular definition
onEdit: ({ updatedData, editType, featureIndexes, editContext }) => {
var myFeatureCollection = updatedData;
// deck.setProps({ layers: layers });
}Switching to mode: drawPolygon gave the following deprecation error in the console
layers@0.21.1:1 Deprecated use of passing `mode` as a string. Pass the mode's class constructor instead.
So, I looked at the codebox example and tried to emulate the imports
// codebox
import { EditableGeoJsonLayer } from "@nebula.gl/layers";
import { DrawPolygonMode } from "@nebula.gl/edit-modes";
on Observable
// Observable cells
nebula_layers = require('https://bundle.run/@nebula.gl/layers@0.21.1')
EditableGeoJsonLayer = nebula_layers.EditableGeoJsonLayer
nebula_edit = require('https://bundle.run/@nebula.gl/edit-modes@0.21.1')
DrawPolygonMode = nebula_edit.DrawPolygonMode
It looks like the imports might be working correctly, but I’m getting the following error in the console about deck: error during initialization of invalid Error: Model needs a program
