V8 example with turf.js

simplified.geojson

turf.R

#devtools::install("jeroenooms/V8")
library("V8")
library(pipeR)

ct = new_context("window")
# min.js gives me a call stack size error but non-min works fine
ct$source(
  "https://raw.githubusercontent.com/morganherlocker/turf/master/turf.js"
)
# one of the examples from turf API docs
#   http://turfjs.org/static/docs/module-turf_simplify.html
ct$eval('
  var feature = turf.polygon([[
    [-70.603637, -33.399918],
    [-70.614624, -33.395332],
    [-70.639343, -33.392466],
    [-70.659942, -33.394759],
    [-70.683975, -33.404504],
    [-70.697021, -33.419406],
    [-70.701141, -33.434306],
    [-70.700454, -33.446339],
    [-70.694274, -33.458369],
    [-70.682601, -33.465816],
    [-70.668869, -33.472117],
    [-70.646209, -33.473835],
    [-70.624923, -33.472117],
    [-70.609817, -33.468107],
    [-70.595397, -33.458369],
    [-70.587158, -33.442901],
    [-70.587158, -33.426283],
    [-70.590591, -33.414248],
    [-70.594711, -33.406224],
    [-70.603637, -33.399918]
    ]]);
  var tolerance = 0.01;
  
  var simplified = turf.simplify(
    feature, tolerance, false);
')

ct$get("feature") %>>%
  ( .$geometry$coordinates ) %>>%
  ( plot( .[,,1], .[,,2], type = "l" ) )

ct$get("simplified") %>>%
  ( .$geometry$coordinates ) %>>%
  ( polygon( .[,,1], .[,,2], col = RColorBrewer::brewer.pal(4,"Greys")[3], lty = 3 ) )

title( main = "Turf.js in R with V8" )