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#!/usr/bin/env python3
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import os
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from os.path import join, abspath, dirname, islink, exists
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import json
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from shutil import copytree
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curdir = dirname(abspath(__file__))
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os.chdir(join(curdir, 'dist'))
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extra_path = {
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    'katex': 'dist/',
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}
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deps = json.load(open(join('..', 'package-lock.json')))["dependencies"]
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targets = list(
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    json.load(open(join('..', 'package.json')))["devDependencies"].keys())
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BLACKLIST = ["typescript"]
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versions = {}
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for path, data in deps.items():
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    if any(path.startswith(b) for b in BLACKLIST):
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        continue
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    if '/' in path:
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        name = path.split('/')[-1]
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    else:
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        name = path
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    if name not in targets:
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        continue
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    extra = extra_path.get(name, '')
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    # links must be relative to the current directory (we want to be able to move the directory around)
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    src = join("..", "node_modules", path, extra)
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    if not exists(src):
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        raise Exception(
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            f"target '{src}' does not exist -- did you forget to run 'npm ci' in '{curdir}'?"
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        )
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    version = data['version']
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    copytree(src, name)
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    dst = f"{name}-{version}"
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    print(f"symlink with version '{dst}' -> '{src}'")
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    os.symlink(name, dst)
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    versions[name] = version
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# finally, write the version info such that it can be loaded
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with open('index.js', 'w') as out:
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    out.write(f"""
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"use strict";
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exports.__esModule = true;
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exports.path = exports.versions = void 0;
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exports.versions = {json.dumps(versions)};
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exports.path = __dirname;
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""")
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