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pre_commit
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Filename :
node.py
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from __future__ import annotations import contextlib import functools import os import sys from typing import Generator from typing import Sequence import pre_commit.constants as C from pre_commit import lang_base from pre_commit.envcontext import envcontext from pre_commit.envcontext import PatchesT from pre_commit.envcontext import UNSET from pre_commit.envcontext import Var from pre_commit.languages.python import bin_dir from pre_commit.prefix import Prefix from pre_commit.util import cmd_output from pre_commit.util import cmd_output_b from pre_commit.util import rmtree ENVIRONMENT_DIR = 'node_env' run_hook = lang_base.basic_run_hook @functools.lru_cache(maxsize=1) def get_default_version() -> str: # nodeenv does not yet support `-n system` on windows if sys.platform == 'win32': return C.DEFAULT # if node is already installed, we can save a bunch of setup time by # using the installed version elif all(lang_base.exe_exists(exe) for exe in ('node', 'npm')): return 'system' else: return C.DEFAULT def get_env_patch(venv: str) -> PatchesT: if sys.platform == 'cygwin': # pragma: no cover _, win_venv, _ = cmd_output('cygpath', '-w', venv) install_prefix = fr'{win_venv.strip()}\bin' lib_dir = 'lib' elif sys.platform == 'win32': # pragma: no cover install_prefix = bin_dir(venv) lib_dir = 'Scripts' else: # pragma: win32 no cover install_prefix = venv lib_dir = 'lib' return ( ('NODE_VIRTUAL_ENV', venv), ('NPM_CONFIG_PREFIX', install_prefix), ('npm_config_prefix', install_prefix), ('NPM_CONFIG_USERCONFIG', UNSET), ('npm_config_userconfig', UNSET), ('NODE_PATH', os.path.join(venv, lib_dir, 'node_modules')), ('PATH', (bin_dir(venv), os.pathsep, Var('PATH'))), ) @contextlib.contextmanager def in_env(prefix: Prefix, version: str) -> Generator[None, None, None]: envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version) with envcontext(get_env_patch(envdir)): yield def health_check(prefix: Prefix, version: str) -> str | None: with in_env(prefix, version): retcode, _, _ = cmd_output_b('node', '--version', check=False) if retcode != 0: # pragma: win32 no cover return f'`node --version` returned {retcode}' else: return None def install_environment( prefix: Prefix, version: str, additional_dependencies: Sequence[str], ) -> None: assert prefix.exists('package.json') envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version) # https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx?f=255&MSPPError=-2147217396#maxpath if sys.platform == 'win32': # pragma: no cover envdir = fr'\\?\{os.path.normpath(envdir)}' cmd = [sys.executable, '-mnodeenv', '--prebuilt', '--clean-src', envdir] if version != C.DEFAULT: cmd.extend(['-n', version]) cmd_output_b(*cmd) with in_env(prefix, version): # https://npm.community/t/npm-install-g-git-vs-git-clone-cd-npm-install-g/5449 # install as if we installed from git local_install_cmd = ( 'npm', 'install', '--include=dev', '--include=prod', '--ignore-prepublish', '--no-progress', '--no-save', ) lang_base.setup_cmd(prefix, local_install_cmd) _, pkg, _ = cmd_output('npm', 'pack', cwd=prefix.prefix_dir) pkg = prefix.path(pkg.strip()) install = ('npm', 'install', '-g', pkg, *additional_dependencies) lang_base.setup_cmd(prefix, install) # clean these up after installation if prefix.exists('node_modules'): # pragma: win32 no cover rmtree(prefix.path('node_modules')) os.remove(pkg)