For python dependencies you can use a simple requirements.txt file and something like requires.io to keep all your dependencies at latest stable release automatically.
npm and webpack and friends can do a fine job of keeping your js dependencies up to date if you are prepared to bundle them into your js.
But what if you want to use the publicly-hosted CDN versions? There doesn’t seem to be anything available.
This is what I came up with. I’m not in love with it but it works ok so far!
It reads a file that looks like this:
jquery jquery.hoverIntent jquery.tablesorter jquery.tablesorter:jquery.tablesorter.widgets moment.js moment-timezone:moment-timezone-with-data Chart.js react react-dom
and emits a file that looks like this:
<script defer src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/jquery.hoverintent/1.10.0/jquery.hoverIntent.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/jquery.tablesorter/2.31.1/js/jquery.tablesorter.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/jquery.tablesorter/2.31.1/js/jquery.tablesorter.widgets.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.26/moment-timezone-with-data.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/react/16.10.2/umd/react.production.min.js"></script> <script defer src="//cdnjs.cloudflare.com/ajax/libs/react-dom/16.10.2/umd/react-dom.production.min.js"></script>
Here’s the code, which lives at https://github.com/PennyDreadfulMTG/Penny-Dreadful-Tools/blob/master/maintenance/client_dependencies.py:
import re import subprocess from typing import List from shared import fetch_tools from shared.pd_exception import DoesNotExistException PATH = 'shared_web/templates/jsdependencies.mustache' def ad_hoc() -> None: tags = [fetch_script_tag(library) + '\n' for library in get_dependencies()] output = ''.join(tags) write_dependencies(output) send_pr_if_updated() def get_dependencies() -> List[str]: f = open('shared_web/jsrequirements.txt', 'r') return [line.strip() for line in f.readlines()] def write_dependencies(s: str) -> None: f = open(PATH, 'w') f.write(s) def send_pr_if_updated() -> None: subprocess.call(['git', 'add', PATH]) if subprocess.call(['git', 'commit', '-m', 'Update client dependencies.']) == 0: subprocess.call(['git', 'push']) subprocess.call(['hub', 'pull-request', '-b', 'master', '-m', 'Update client dependencies.', '-f']) def fetch_script_tag(entry: str) -> str: parts = entry.split(':') library = parts[0] file = parts[0] if len(parts) == 1 else parts[1] info = fetch_tools.fetch_json(f'https://api.cdnjs.com/libraries/{library}') version = info.get('version') if not version and library.lower() != library: library = library.lower() info = fetch_tools.fetch_json(f'https://api.cdnjs.com/libraries/{library}') version = info.get('version') if not version: raise DoesNotExistException(f'Could not get version for {library}') path = None for a in info['assets']: if a.get('version') == version: for f in a['files']: if minified_path(f, file): path = f break if unminified_path(f, file): path = f if not path: raise DoesNotExistException(f'Could not find file for {library}') return f'<script defer src="//cdnjs.cloudflare.com/ajax/libs/{library}/{version}/{path}"></script>' def minified_path(path: str, library: str) -> bool: return test_path(path, library, '.min') def unminified_path(path: str, library: str) -> bool: return test_path(path, library) def test_path(path: str, library: str, required: str = '') -> bool: # CommonJS libs get us the error 'require is not defined' in the browser. See #6731. if 'cjs/' in path: return False name_without_js = library.replace('.js', '') regex = fr'{name_without_js}(.js)?(.production)?{required}.js return bool(re.search(regex, path, re.IGNORECASE))