error ReferenceError: len3 is not defined when adding layer to map

[MicahDavid]

I am trying to create an interpolated leaflet layer in my Vue JS application.

I am receiving the following error when adding the idw layer to my map:

error ReferenceError: len3 is not defined

Here is my code:

        let dataArray = []
        filteredListData.value.forEach((data) => {
            dataArray.push([data.lat, data.lng, data.val])
        })
        const idw = L.idwLayer(dataArray, {opacity: 0.3, cellSize: 10, exp: 2, max: 50}).addTo(map.value)

If I don't addTo(), then the idw layer is created successfully.
console.log(idw) looks like this:

NewClass {options: {…}, _latlngs: Array(55), _initHooksCalled: true}
options
: 
{opacity: 0.3, cellSize: 10, exp: 2, max: 50}
_initHooksCalled
: 
true
_latlngs
: 
(55) [Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3), Array(3)]
[[Prototype]]
: 
NewClass

The latlngs array looks like this:

0
: 
(3) [39.390906, -75.62808, 39.6]
1
: 
(3) [39.088212, -75.437285, 40.7]
2
: 
(3) [38.536626, -75.054492, 41.8]
3
: 
(3) [39.864455, -75.842194, 36.5]

Any suggestions are greatly appreciated!

[MicahDavid]

For anyone else encountering this error, it was just some js syntax that needed to be updated. I suppose this is with the ES6 javascript variable requirements. There were 2 js errors I needed to get around:

error ReferenceError: len3 is not defined

I just defined len3 like so:
let len3

Also, I needed to change this line:

interpolVal = numerator/denominator;

to:

const interpolVal = numerator/denominator;

Hope that helps anyone else trying to use this library.