code: def initialize(self, version, build_data):
      if self.target_name not in ["wheel", "sdist"]:
          return
      cmd = "build:prod" if version == "standard" else "build"
      osp = os.path
      here = osp.abspath(osp.dirname(__file__))
      lab_path = osp.join(here, "ipyparallel", "labextension")
  
      if os.environ.get("IPP_DISABLE_JS") == "1":
          print("Skipping js installation")
          return
  
      # this tells us if labextension is built at all, not if it's up-to-date
      labextension_built = glob.glob(osp.join(lab_path, "*"))
      needs_js = True
      if not osp.isdir(osp.join(here, ".git")):
          print("Installing from a dist, not a repo")
          # not in a repo, probably installing from sdist
          # could be git-archive, though!
          # skip rebuilding js if it's already present
          if labextension_built:
              print(f"Not regenerating labextension in {lab_path}")
              needs_js = False
  
      if needs_js:
          subprocess.check_call(["jlpm"], cwd=here)
          subprocess.check_call(["jlpm", "run", cmd], cwd=here)
  
imports: import glob
  import os
  import subprocess
  from hatchling.builders.hooks.plugin.interface import BuildHookInterface
label_desc: Use image node_id 1 for calling the CustomHook obj's underlying member method code with example usage: obj.initialize(version, build_data) without return types