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#' Shiny Extension
#'
#' Creates the basic structure for a shiny extension.
#'
#' @param name Name of extension used to define file names and functions.
#' @inheritParams scaffold_widget
#'
#' @return `TRUE` (invisibly) if successfully run.
#'
#' @examples
#' if(interactive()){
#' # current directory
#' wd <- getwd()
#'
#' # create a mock up ambiorix project
#' tmp <- tmp_package()
#'
#' # move to package
#' setwd(tmp)
#'
#' # scaffold ambiorix
#' scaffold_extension()
#'
#' # clean up
#' setwd(wd)
#' tmp_delete(tmp)
#' }
#'
#' @export
scaffold_extension <- function(name, edit = interactive()){
# checks
assert_that(has_engine())
assert_that(is_package())
assert_that(not_missing(name))
assert_that(is_name_valid(name))
path <- sprintf("srcjs/exts/%s.js", name)
assert_that(!fs::file_exists(path), msg = "Extension already exists")
open_msg("shiny extension", name)
# init npm
engine_init()
# create base npm webpack files
create_directory("srcjs/exts")
# creating inst packge for assets
create_directory("inst/packer", recurse = TRUE)
# install dependencies
core_deps_install()
# edit package.json
engine_add_scripts()
# create config file
configure(
name = name,
entry_dir = "exts/",
output_dir = "./inst/packer",
externals = list(shiny = "Shiny", jquery = "jQuery")
)
# create srcjs and files
template_js_module(name, "exts")
creup_index(name, "exts")
# creating R files
ext_zzz_file(name)
template_r_function(name, "extension/R/extension.R")
# ignore files and directories
ignore_files()
# use shiny
use_pkgs("shiny")
# edit
edit_files(edit, sprintf("srcjs/exts/%s.js", name), sprintf("R/%s.R", name))
# wrap up
end_msg()
invisible(TRUE)
}
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