tsc.gni

import("npm.gni")

template("typescript_build") {
  assert(defined(invoker.tsconfig), "Need tsconfig name to run")
  assert(defined(invoker.sources), "Need tsc sources to run")
  assert(defined(invoker.output_dir_name),
         "Need output_dir_name to run, should be 'lib' or other top level dir")
  assert(defined(invoker.output_gen_dir),
         "Need output_gen_dir to run, should be relative to the root gen dir")

  npm_action(target_name) {
    forward_variables_from(invoker,
                           [
                             "deps",
                             "public_deps",
                             "outputs",
                           ])
    script = "tsc"

    sources = invoker.sources
    inputs = [
      invoker.tsconfig,
      "//electron/tsconfig.json",
      "//electron/yarn.lock",
      "//electron/typings/internal-ambient.d.ts",
      "//electron/typings/internal-electron.d.ts",
    ]

    type_roots = "node_modules/@types,typings"
    if (defined(invoker.type_root)) {
      type_roots += "," + invoker.type_root
    }

    base_out_path = invoker.output_gen_dir + "/electron/"
    args = [
      "-p",
      rebase_path(invoker.tsconfig),
      "--outDir",
      rebase_path("$base_out_path" + invoker.output_dir_name),
      "--typeRoots",
      type_roots,
    ]

    outputs = []

    foreach(invoker_source, invoker.sources) {
      # The output of TSC is all inputs but with JS instead of TS as the extension
      outputs += [ "$base_out_path" + get_path_info(invoker_source, "dir") +
                   "/" + get_path_info(invoker_source, "name") + ".js" ]
    }
  }
}