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