* using log directory 'd:/Rcompile/CRANpkg/local/4.1/rmapshaper.Rcheck'
* using R version 4.1.3 (2022-03-10)
* using platform: x86_64-w64-mingw32 (64-bit)
* using session charset: ISO8859-1
* checking for file 'rmapshaper/DESCRIPTION' ... OK
* checking extension type ... Package
* this is package 'rmapshaper' version '0.5.0'
* package encoding: UTF-8
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking whether package 'rmapshaper' can be installed ... OK
* checking installed package size ... OK
* checking package directory ... OK
* checking 'build' directory ... OK
* checking DESCRIPTION meta-information ... OK
* checking top-level files ... OK
* checking for left-over files ... OK
* checking index information ... OK
* checking package subdirectories ... OK
* checking R files for non-ASCII characters ... OK
* checking R files for syntax errors ... OK
* checking whether the package can be loaded ... OK
* checking whether the package can be loaded with stated dependencies ... OK
* checking whether the package can be unloaded cleanly ... OK
* checking whether the namespace can be loaded with stated dependencies ... OK
* checking whether the namespace can be unloaded cleanly ... OK
* checking loading without being on the library search path ... OK
* checking use of S3 registration ... OK
* checking dependencies in R code ... OK
* checking S3 generic/method consistency ... OK
* checking replacement functions ... OK
* checking foreign function calls ... OK
* checking R code for possible problems ... [8s] NOTE
Initiating curl with CURL_SSL_BACKEND: openssl
* checking Rd files ... [1s] OK
* checking Rd metadata ... OK
* checking Rd cross-references ... OK
* checking for missing documentation entries ... OK
* checking for code/documentation mismatches ... OK
* checking Rd \usage sections ... OK
* checking Rd contents ... OK
* checking for unstated dependencies in examples ... OK
* checking installed files from 'inst/doc' ... OK
* checking files in 'vignettes' ... OK
* checking examples ... [3s] ERROR
Running examples in 'rmapshaper-Ex.R' failed
The error most likely occurred in:

> ### Name: apply_mapshaper_commands
> ### Title: Apply a mapshaper command string to a geojson object
> ### Aliases: apply_mapshaper_commands
> 
> ### ** Examples
> 
> 
> nc <- sf::read_sf(system.file("gpkg/nc.gpkg", package = "sf"))
> rmapshaper::apply_mapshaper_commands(geojsonsf::sf_geojson(nc), "-clean")
Error: SyntaxError: Unexpected token .
Execution halted
* checking for unstated dependencies in 'tests' ... OK
* checking tests ... [18s] ERROR
  Running 'testthat.R' [18s]
Running the tests in 'tests/testthat.R' failed.
Complete output:
  > # This file is part of the standard setup for testthat.
  > # It is recommended that you do not modify it.
  > #
  > # Where should you do additional test configuration?
  > # Learn more about the roles of various files in:
  > # * https://r-pkgs.org/tests.html
  > # * https://testthat.r-lib.org/reference/test_package.html#special-files
  > 
  > library(testthat)
  > library(rmapshaper)
  Initiating curl with CURL_SSL_BACKEND: openssl
  > 
  > test_check("rmapshaper")
  [ FAIL 52 | WARN 0 | SKIP 17 | PASS 53 ]
  
  == Skipped tests ===============================================================
  * Not old v8 (1)
  * On CRAN (9)
  * has_sys_mapshaper() is not TRUE (6)
  * possible bug in mapshaper https://github.com/mbloch/mapshaper/issues/487 (1)
  
  == Failed tests ================================================================
  -- Error ('test-clip_erase.R:3:3'): ms_clip.geojson works ----------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_clip(ce_poly, ce_inner_poly) at test-clip_erase.R:3:2
   2. \-rmapshaper:::ms_clip.json(ce_poly, ce_inner_poly)
   3.   \-rmapshaper:::clip_erase_json(...)
   4.     \-rmapshaper:::mapshaper_clip_erase(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:21:3'): ms_clip.character works -------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_clip(unclass(ce_poly), unclass(ce_inner_poly)) at test-clip_erase.R:21:2
   2. \-rmapshaper:::ms_clip.character(unclass(ce_poly), unclass(ce_inner_poly))
   3.   \-rmapshaper:::clip_erase_json(...)
   4.     \-rmapshaper:::mapshaper_clip_erase(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:30:3'): ms_erase.geojson works --------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_erase(ce_poly, ce_inner_poly) at test-clip_erase.R:30:2
   2. \-rmapshaper:::ms_erase.json(ce_poly, ce_inner_poly)
   3.   \-rmapshaper:::clip_erase_json(...)
   4.     \-rmapshaper:::mapshaper_clip_erase(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:42:3'): ms_erase.character works ------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_erase(unclass(ce_poly), unclass(ce_inner_poly)) at test-clip_erase.R:42:2
   2. \-rmapshaper:::ms_erase.character(unclass(ce_poly), unclass(ce_inner_poly))
   3.   \-rmapshaper:::clip_erase_json(...)
   4.     \-rmapshaper:::mapshaper_clip_erase(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:52:3'): ms_clip.SpatialPolygons works -------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_clip(ce_poly_spdf, ce_inner_poly_spdf) at test-clip_erase.R:52:2
   2. \-rmapshaper:::ms_clip.SpatialPolygons(ce_poly_spdf, ce_inner_poly_spdf)
   3.   \-rmapshaper:::clip_erase_sp(...)
   4.     \-rmapshaper:::mapshaper_clip_erase(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:67:3'): ms_erase.SpatialPolygons works ------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_erase(ce_poly_spdf, ce_inner_poly_spdf) at test-clip_erase.R:67:2
   2. \-rmapshaper:::ms_erase.SpatialPolygons(ce_poly_spdf, ce_inner_poly_spdf)
   3.   \-rmapshaper:::clip_erase_sp(...)
   4.     \-rmapshaper:::mapshaper_clip_erase(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:138:3'): bbox works -------------------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-rmapshaper::ms_erase(ce_poly, bbox = c(51, -45, 55, -40)) at test-clip_erase.R:138:2
    2. \-rmapshaper:::ms_erase.json(ce_poly, bbox = c(51, -45, 55, -40))
    3.   \-rmapshaper:::clip_erase_json(...)
    4.     \-rmapshaper:::mapshaper_clip_erase(...)
    5.       \-rmapshaper::apply_mapshaper_commands(...)
    6.         \-rmapshaper:::ms_make_ctx()
    7.           \-ctx$source(...)
    8.             \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
    9.               +-V8:::get_str_output(...)
   10.               \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:159:3'): clip works with sf objects ---------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-clip_erase.R:159:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_clip(ce_poly_sf, ce_inner_poly_sf)
    5. \-rmapshaper:::ms_clip.sf(ce_poly_sf, ce_inner_poly_sf)
    6.   \-rmapshaper:::clip_erase_sf(...)
    7.     \-rmapshaper:::mapshaper_clip_erase(...)
    8.       \-rmapshaper:::ms_make_ctx()
    9.         \-ctx$source(...)
   10.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   11.             +-V8:::get_str_output(...)
   12.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-clip_erase.R:172:3'): erase works with sf objects --------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-clip_erase.R:172:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_erase(ce_poly_sf, ce_inner_poly_sf)
    5. \-rmapshaper:::ms_erase.sf(ce_poly_sf, ce_inner_poly_sf)
    6.   \-rmapshaper:::clip_erase_sf(...)
    7.     \-rmapshaper:::mapshaper_clip_erase(...)
    8.       \-rmapshaper:::ms_make_ctx()
    9.         \-ctx$source(...)
   10.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   11.             +-V8:::get_str_output(...)
   12.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-dissolve.R:13:3'): ms_dissolve.geojson works -------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_dissolve(poly) at test-dissolve.R:13:2
   2. \-rmapshaper:::ms_dissolve.json(poly)
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-dissolve.R:31:3'): ms_dissolve.character works -----------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_dissolve(unclass(poly)) at test-dissolve.R:31:2
   2. \-rmapshaper:::ms_dissolve.character(unclass(poly))
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-dissolve.R:42:3'): ms_dissolve.SpatialPolygons works -----------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-rmapshaper::ms_dissolve(poly_spdf) at test-dissolve.R:42:2
    2. \-rmapshaper:::ms_dissolve.SpatialPolygons(poly_spdf)
    3.   \-rmapshaper:::dissolve_sp(...)
    4.     \-rmapshaper:::ms_sp(input = input, call = call, ...)
    5.       \-rmapshaper::apply_mapshaper_commands(...)
    6.         \-rmapshaper:::ms_make_ctx()
    7.           \-ctx$source(...)
    8.             \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
    9.               +-V8:::get_str_output(...)
   10.               \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-dissolve.R:75:3'): ms_dissolve.sf works with points ------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(ms_dissolve(points_sf), "sf") at test-dissolve.R:75:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_dissolve(points_sf)
    5. \-rmapshaper:::ms_dissolve.sf(points_sf)
    6.   \-rmapshaper:::dissolve_sf(...)
    7.     \-rmapshaper:::ms_sf(input = input, call = call, ...)
    8.       \-rmapshaper::apply_mapshaper_commands(...)
    9.         \-rmapshaper:::ms_make_ctx()
   10.           \-ctx$source(...)
   11.             \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   12.               +-V8:::get_str_output(...)
   13.               \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-dissolve.R:80:3'): ms_dissolve.sf works with polygons ----------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(ms_dissolve(poly_sf), "sf") at test-dissolve.R:80:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_dissolve(poly_sf)
    5. \-rmapshaper:::ms_dissolve.sf(poly_sf)
    6.   \-rmapshaper:::dissolve_sf(...)
    7.     \-rmapshaper:::ms_sf(input = input, call = call, ...)
    8.       \-rmapshaper::apply_mapshaper_commands(...)
    9.         \-rmapshaper:::ms_make_ctx()
   10.           \-ctx$source(...)
   11.             \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   12.               +-V8:::get_str_output(...)
   13.               \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-dissolve.R:88:3'): weight argument works -----------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_warning(ms_dissolve(points, weight = "w"), "The command returned an empty response.") at test-dissolve.R:88:2
    2. | \-testthat:::expect_condition_matching(...)
    3. |   \-testthat:::quasi_capture(...)
    4. |     +-testthat (local) .capture(...)
    5. |     | \-base::withCallingHandlers(...)
    6. |     \-rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
    7. +-rmapshaper::ms_dissolve(points, weight = "w")
    8. \-rmapshaper:::ms_dissolve.json(points, weight = "w")
    9.   \-rmapshaper::apply_mapshaper_commands(...)
   10.     \-rmapshaper:::ms_make_ctx()
   11.       \-ctx$source(...)
   12.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   13.           +-V8:::get_str_output(...)
   14.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-explode.R:27:3'): ms_explode.geojson works ---------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_explode(multi_poly) at test-explode.R:27:2
   2. \-rmapshaper:::ms_explode.json(multi_poly)
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-explode.R:40:3'): ms_explode.character works -------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_explode(unclass(multi_poly)) at test-explode.R:40:2
   2. \-rmapshaper:::ms_explode.character(unclass(multi_poly))
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-explode.R:48:3'): ms_explode.SpatialPolygonsDataFrame works ----
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-rmapshaper::ms_explode(spdf) at test-explode.R:48:2
    2. \-rmapshaper:::ms_explode.SpatialPolygons(spdf)
    3.   \-rmapshaper:::explode_sp(input, ...)
    4.     \-rmapshaper:::ms_sp(input = input, call = "-explode", ...)
    5.       \-rmapshaper::apply_mapshaper_commands(...)
    6.         \-rmapshaper:::ms_make_ctx()
    7.           \-ctx$source(...)
    8.             \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
    9.               +-V8:::get_str_output(...)
   10.               \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-explode.R:75:3'): ms_explode works with sf ---------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-rmapshaper::ms_explode(mp_sf) at test-explode.R:75:2
    2. \-rmapshaper:::ms_explode.sf(mp_sf)
    3.   \-rmapshaper:::explode_sf(input = input, ...)
    4.     \-rmapshaper:::ms_sf(input = input, call = "-explode", ...)
    5.       \-rmapshaper::apply_mapshaper_commands(...)
    6.         \-rmapshaper:::ms_make_ctx()
    7.           \-ctx$source(...)
    8.             \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
    9.               +-V8:::get_str_output(...)
   10.               \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-filter_fields.R:17:3'): ms_filter_fields works with polygons ---
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(ms_filter_fields(poly, "a"), "geojson") at test-filter_fields.R:17:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_filter_fields(poly, "a")
    5. \-rmapshaper:::ms_filter_fields.json(poly, "a")
    6.   \-rmapshaper::apply_mapshaper_commands(...)
    7.     \-rmapshaper:::ms_make_ctx()
    8.       \-ctx$source(...)
    9.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   10.           +-V8:::get_str_output(...)
   11.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-filter_fields.R:32:3'): ms_filter_fields works with points -----
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-filter_fields.R:32:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_filter_fields(pts, c("x", "y"))
    5. \-rmapshaper:::ms_filter_fields.json(pts, c("x", "y"))
    6.   \-rmapshaper::apply_mapshaper_commands(...)
    7.     \-rmapshaper:::ms_make_ctx()
    8.       \-ctx$source(...)
    9.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   10.           +-V8:::get_str_output(...)
   11.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-filter_fields.R:42:3'): ms_filter_fields works with lines ------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-filter_fields.R:42:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_filter_fields(lines, c("a", "b"))
    5. \-rmapshaper:::ms_filter_fields.json(lines, c("a", "b"))
    6.   \-rmapshaper::apply_mapshaper_commands(...)
    7.     \-rmapshaper:::ms_make_ctx()
    8.       \-ctx$source(...)
    9.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   10.           +-V8:::get_str_output(...)
   11.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-filter_fields.R:52:3'): ms_filter_fields fails correctly -------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_warning(ms_filter_fields(poly, "d"), "The command returned an empty response") at test-filter_fields.R:52:2
    2. | \-testthat:::expect_condition_matching(...)
    3. |   \-testthat:::quasi_capture(...)
    4. |     +-testthat (local) .capture(...)
    5. |     | \-base::withCallingHandlers(...)
    6. |     \-rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
    7. +-rmapshaper::ms_filter_fields(poly, "d")
    8. \-rmapshaper:::ms_filter_fields.json(poly, "d")
    9.   \-rmapshaper::apply_mapshaper_commands(...)
   10.     \-rmapshaper:::ms_make_ctx()
   11.       \-ctx$source(...)
   12.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   13.           +-V8:::get_str_output(...)
   14.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-filter_islands.R:21:3'): ms_filter_islands works with min_area --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-filter_islands.R:21:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_filter_islands(islands_poly, min_area = 12391399903)
    5. \-rmapshaper:::ms_filter_islands.json(islands_poly, min_area = 12391399903)
    6.   \-rmapshaper::apply_mapshaper_commands(...)
    7.     \-rmapshaper:::ms_make_ctx()
    8.       \-ctx$source(...)
    9.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   10.           +-V8:::get_str_output(...)
   11.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-filter_islands.R:42:3'): ms_filter_islands works with min_vertoces --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-filter_islands.R:42:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_filter_islands(islands_poly, min_vertices = 4)
    5. \-rmapshaper:::ms_filter_islands.json(islands_poly, min_vertices = 4)
    6.   \-rmapshaper::apply_mapshaper_commands(...)
    7.     \-rmapshaper:::ms_make_ctx()
    8.       \-ctx$source(...)
    9.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   10.           +-V8:::get_str_output(...)
   11.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-filter_islands.R:56:3'): ms_filter_islands works drop_null_geometries = FALSE --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-filter_islands.R:56:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_filter_islands(...)
    5. \-rmapshaper:::ms_filter_islands.json(...)
    6.   \-rmapshaper::apply_mapshaper_commands(...)
    7.     \-rmapshaper:::ms_make_ctx()
    8.       \-ctx$source(...)
    9.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   10.           +-V8:::get_str_output(...)
   11.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-innerlines.R:2:3'): ms_innerlines works with all classes -------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_innerlines(innerlines_poly) at test-innerlines.R:2:2
   2. \-rmapshaper:::ms_innerlines.json(innerlines_poly)
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-innerlines.R:21:3'): ms_innerlines errors correctly ------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_warning(...) at test-innerlines.R:21:2
    2. | \-testthat:::expect_condition_matching(...)
    3. |   \-testthat:::quasi_capture(...)
    4. |     +-testthat (local) .capture(...)
    5. |     | \-base::withCallingHandlers(...)
    6. |     \-rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
    7. +-rmapshaper::ms_innerlines(ms_lines(innerlines_poly))
    8. +-rmapshaper::ms_lines(innerlines_poly)
    9. \-rmapshaper:::ms_lines.json(innerlines_poly)
   10.   \-rmapshaper::apply_mapshaper_commands(...)
   11.     \-rmapshaper:::ms_make_ctx()
   12.       \-ctx$source(...)
   13.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   14.           +-V8:::get_str_output(...)
   15.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-lines.R:2:3'): ms_lines works with all classes -----------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_lines(innerlines_poly) at test-lines.R:2:2
   2. \-rmapshaper:::ms_lines.json(innerlines_poly)
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-lines.R:20:3'): ms_lines works with fields specified -----------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_lines(innerlines_poly, "foo") at test-lines.R:20:2
   2. \-rmapshaper:::ms_lines.json(innerlines_poly, "foo")
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-lines.R:36:3'): ms_lines errors correctly ----------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_warning(ms_lines(innerlines_poly, "bar"), "The command returned an empty response") at test-lines.R:36:2
    2. | \-testthat:::expect_condition_matching(...)
    3. |   \-testthat:::quasi_capture(...)
    4. |     +-testthat (local) .capture(...)
    5. |     | \-base::withCallingHandlers(...)
    6. |     \-rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
    7. +-rmapshaper::ms_lines(innerlines_poly, "bar")
    8. \-rmapshaper:::ms_lines.json(innerlines_poly, "bar")
    9.   \-rmapshaper::apply_mapshaper_commands(...)
   10.     \-rmapshaper:::ms_make_ctx()
   11.       \-ctx$source(...)
   12.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   13.           +-V8:::get_str_output(...)
   14.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-points.R:11:3'): ms_points works with defaults -----------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_points(poly_geojson) at test-points.R:11:2
   2. \-rmapshaper:::ms_points.json(poly_geojson)
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-points.R:33:3'): ms_points works with defaults with sf ---------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_points(poly_sf) at test-points.R:33:2
   2. \-rmapshaper:::ms_points.sf(poly_sf)
   3.   \-rmapshaper:::ms_sf(input, cmd, ...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-points.R:48:3'): ms_points works with location=centroid --------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_points(poly_geojson, location = "centroid") at test-points.R:48:2
   2. \-rmapshaper:::ms_points.json(poly_geojson, location = "centroid")
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-points.R:64:3'): ms_points works with location=inner -----------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_points(poly_geojson, location = "inner") at test-points.R:64:2
   2. \-rmapshaper:::ms_points.json(poly_geojson, location = "inner")
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-points.R:85:3'): ms_points works with x and y ------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_points(poly_geojson, x = "x", y = "y") at test-points.R:85:2
   2. \-rmapshaper:::ms_points.json(poly_geojson, x = "x", y = "y")
   3.   \-rmapshaper::apply_mapshaper_commands(...)
   4.     \-rmapshaper:::ms_make_ctx()
   5.       \-ctx$source(...)
   6.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   7.           +-V8:::get_str_output(...)
   8.           \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:44:3'): ms_simplify.geojson and character works with defaults --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(poly_simp) at test-simplify.R:44:2
   2. \-rmapshaper:::ms_simplify.json(poly_simp)
   3.   \-rmapshaper:::ms_simplify_json(...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:57:3'): ms_simplify.geojson works with different methods --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(poly_simp, method = "vis", weighting = 0) at test-simplify.R:57:2
   2. \-rmapshaper:::ms_simplify.json(poly_simp, method = "vis", weighting = 0)
   3.   \-rmapshaper:::ms_simplify_json(...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:67:3'): ms_simplify.SpatialPolygons works with defaults --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(poly_simp_spdf) at test-simplify.R:67:2
   2. \-rmapshaper:::ms_simplify.SpatialPolygons(poly_simp_spdf)
   3.   \-rmapshaper:::ms_sp(input, call, ...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:81:3'): simplify.SpatialPolygonsDataFrame works with other methods --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(poly_simp_spdf, method = "vis", weighting = 0) at test-simplify.R:81:2
   2. \-rmapshaper:::ms_simplify.SpatialPolygons(...)
   3.   \-rmapshaper:::ms_sp(input, call, ...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:100:3'): exploding works with geojson ---------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(multipoly, keep_shapes = TRUE, explode = FALSE) at test-simplify.R:100:2
   2. \-rmapshaper:::ms_simplify.json(...)
   3.   \-rmapshaper:::ms_simplify_json(...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:123:3'): ms_simplify works with drop_null_geometries --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(...) at test-simplify.R:123:2
   2. \-rmapshaper:::ms_simplify.json(...)
   3.   \-rmapshaper:::ms_simplify_json(...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:130:3'): ms_simplify.SpatialPolygonsDataFrame works keep_shapes = FALSE and ignores drop_null_geometries --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(...) at test-simplify.R:130:2
   2. \-rmapshaper:::ms_simplify.SpatialPolygons(...)
   3.   \-rmapshaper:::ms_sp(input, call, ...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:137:3'): ms_simplify works with lines ---------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(line_simp, keep = 0.1) at test-simplify.R:137:2
   2. \-rmapshaper:::ms_simplify.json(line_simp, keep = 0.1)
   3.   \-rmapshaper:::ms_simplify_json(...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:145:3'): ms_simplify works correctly when all geometries are dropped --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_error(...) at test-simplify.R:145:2
    2. | \-testthat:::expect_condition_matching(...)
    3. |   \-testthat:::quasi_capture(...)
    4. |     +-testthat (local) .capture(...)
    5. |     | \-base::withCallingHandlers(...)
    6. |     \-rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
    7. +-rmapshaper::ms_simplify(multiple_poly_simp_spdf, keep = 0.001)
    8. \-rmapshaper:::ms_simplify.SpatialPolygons(...)
    9.   \-rmapshaper:::ms_sp(input, call, ...)
   10.     \-rmapshaper::apply_mapshaper_commands(...)
   11.       \-rmapshaper:::ms_make_ctx()
   12.         \-ctx$source(...)
   13.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   14.             +-V8:::get_str_output(...)
   15.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:163:3'): snap_interval works ------------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(poly, keep = 0.8, snap = TRUE, snap_interval = 0.09) at test-simplify.R:163:2
   2. \-rmapshaper:::ms_simplify.json(...)
   3.   \-rmapshaper:::ms_simplify_json(...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:171:3'): ms_simplify works with very small values of 'keep --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-simplify.R:171:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_simplify(poly_simp, keep = 1e-04)
    5. \-rmapshaper:::ms_simplify.json(poly_simp, keep = 1e-04)
    6.   \-rmapshaper:::ms_simplify_json(...)
    7.     \-rmapshaper::apply_mapshaper_commands(...)
    8.       \-rmapshaper:::ms_make_ctx()
    9.         \-ctx$source(...)
   10.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   11.             +-V8:::get_str_output(...)
   12.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:179:3'): ms_simplify works with sf ------------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(...) at test-simplify.R:179:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_simplify(multiple_poly_simp_sf)
    5. \-rmapshaper:::ms_simplify.sf(multiple_poly_simp_sf)
    6.   \-rmapshaper:::ms_sf(input, call, ...)
    7.     \-rmapshaper::apply_mapshaper_commands(...)
    8.       \-rmapshaper:::ms_make_ctx()
    9.         \-ctx$source(...)
   10.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   11.             +-V8:::get_str_output(...)
   12.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:191:3'): ms_simplify works with sfc -----------------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_s3_class(ms_simplify(poly_sfc), "sfc_POLYGON") at test-simplify.R:191:2
    2. | \-testthat::quasi_label(enquo(object), arg = "object")
    3. |   \-rlang::eval_bare(expr, quo_get_env(quo))
    4. +-rmapshaper::ms_simplify(poly_sfc)
    5. \-rmapshaper:::ms_simplify.sfc(poly_sfc)
    6.   \-rmapshaper:::ms_sf(input, call, ...)
    7.     \-rmapshaper::apply_mapshaper_commands(...)
    8.       \-rmapshaper:::ms_make_ctx()
    9.         \-ctx$source(...)
   10.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   11.             +-V8:::get_str_output(...)
   12.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:215:5'): ms_simplify works with various column types --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
      x
   1. +-rmapshaper::ms_simplify(xsf) at test-simplify.R:215:4
   2. \-rmapshaper:::ms_simplify.sf(xsf)
   3.   \-rmapshaper:::ms_sf(input, call, ...)
   4.     \-rmapshaper::apply_mapshaper_commands(...)
   5.       \-rmapshaper:::ms_make_ctx()
   6.         \-ctx$source(...)
   7.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   8.             +-V8:::get_str_output(...)
   9.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-simplify.R:231:3'): ms_simplify works with sf objects containing units --
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_warning(...) at test-simplify.R:231:2
    2. | \-testthat:::expect_condition_matching(...)
    3. |   \-testthat:::quasi_capture(...)
    4. |     +-testthat (local) .capture(...)
    5. |     | \-base::withCallingHandlers(...)
    6. |     \-rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
    7. +-rmapshaper::ms_simplify(multiple_poly_simp_sf)
    8. \-rmapshaper:::ms_simplify.sf(multiple_poly_simp_sf)
    9.   \-rmapshaper:::ms_sf(input, call, ...)
   10.     \-rmapshaper::apply_mapshaper_commands(...)
   11.       \-rmapshaper:::ms_make_ctx()
   12.         \-ctx$source(...)
   13.           \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   14.             +-V8:::get_str_output(...)
   15.             \-V8:::context_eval(join(src), private$context, serialize, await)
  -- Error ('test-utils.R:85:3'): an sf data frame with no columns works ---------
  <std::invalid_argument/C++Error/error/condition>
  Error: SyntaxError: Unexpected token .
  Backtrace:
       x
    1. +-testthat::expect_silent(ms_sf(points, "-info")) at test-utils.R:85:2
    2. | \-testthat:::quasi_capture(enquo(object), NULL, evaluate_promise)
    3. |   +-testthat (local) .capture(...)
    4. |   | +-withr::with_output_sink(...)
    5. |   | | \-base::force(code)
    6. |   | +-base::withCallingHandlers(...)
    7. |   | \-base::withVisible(code)
    8. |   \-rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
    9. \-rmapshaper:::ms_sf(points, "-info")
   10.   \-rmapshaper::apply_mapshaper_commands(...)
   11.     \-rmapshaper:::ms_make_ctx()
   12.       \-ctx$source(...)
   13.         \-V8 (local) evaluate_js(readLines(file, encoding = "UTF-8", warn = FALSE))
   14.           +-V8:::get_str_output(...)
   15.           \-V8:::context_eval(join(src), private$context, serialize, await)
  
  [ FAIL 52 | WARN 0 | SKIP 17 | PASS 53 ]
  Error: Test failures
  Execution halted
* checking for unstated dependencies in vignettes ... OK
* checking package vignettes in 'inst/doc' ... OK
* checking re-building of vignette outputs ... [4s] WARNING
Error(s) in re-building vignettes:
--- re-building 'rmapshaper.Rmd' using rmarkdown
Initiating curl with CURL_SSL_BACKEND: openssl
Quitting from lines 54-56 (rmapshaper.Rmd) 
Error: processing vignette 'rmapshaper.Rmd' failed with diagnostics:
SyntaxError: Unexpected token .
--- failed re-building 'rmapshaper.Rmd'

SUMMARY: processing the following file failed:
  'rmapshaper.Rmd'

Error: Vignette re-building failed.
Execution halted

* checking PDF version of manual ... OK
* DONE
Status: 2 ERRORs, 1 WARNING, 1 NOTE