def run()

in setupbase.py [0:0]

• 33 lines of code
• 13 McCabe index (conditional complexity)

        def run(self):
            if skip_npm:
                log.info("Skipping npm-installation")
                return
            node_package = path or HERE
            node_modules = pjoin(node_package, "node_modules")
            is_yarn = os.path.exists(pjoin(node_package, "yarn.lock"))

            npm_cmd = [npm] if isinstance(npm, str) else npm

            if npm is None:
                if is_yarn:
                    npm_cmd = ["yarn"]
                else:
                    npm_cmd = ["npm"]

            if not which(npm_cmd[0]):
                log.error(
                    "`{0}` unavailable.  If you're running this command "
                    "using sudo, make sure `{0}` is available to sudo".format(
                        npm_cmd[0]
                    )
                )
                return

            if force or is_stale(node_modules, pjoin(node_package, "package.json")):
                log.info(
                    "Installing build dependencies with npm.  This may "
                    "take a while..."
                )
                run(npm_cmd + ["install"], cwd=node_package)
            if build_dir and source_dir and not force:
                should_build = is_stale(build_dir, source_dir)
            else:
                should_build = True
            if should_build:
                run(npm_cmd + ["run", build_cmd], cwd=node_package)