System Initiative

#!/usr/bin/env python3 """ Builds an isolated dist tree containing a pruned sub-package and all production node_modules. """ import argparse import os import shutil import stat import tempfile if __name__ == "__main__": parser = argparse.ArgumentParser(description=__doc__) parser.add_argument( "--package-dir", required=True, help="Path to the workspace member package", ) parser.add_argument( "--package-node-modules-path", required=True, help="Path to package `node_modules`", ) parser.add_argument( "--dist-path", required=True, help="Path to `dist` scripts", ) parser.add_argument( "--index-file", required=True, help="Entrypoint JavaScript file to run", ) parser.add_argument( "out_path", help="Path to output directory", ) args = parser.parse_args() with tempfile.TemporaryDirectory() as tempdir: root_dir = os.path.join(tempdir, "root") lib_dir = os.path.join(root_dir, "lib") bin_dir = os.path.join(root_dir, "bin") package_dir = os.path.join(lib_dir, args.package_dir) # Copy node_modules prunned tree into tempdir shutil.copytree( args.package_node_modules_path, lib_dir, symlinks=True, ) # Copy dist into the sub-package's dir shutil.copytree( args.dist_path, os.path.join( package_dir, os.path.basename(args.dist_path), ), symlinks=True, ) js_path = os.path.join( '${0%/*}', "..", "lib", args.package_dir, "dist", args.index_file, ) binary_content = [ "#!/usr/bin/env sh", f"exec node \"{js_path}\" \"$@\"", ] binary = os.path.join(bin_dir, os.path.basename(args.package_dir)) os.makedirs(os.path.dirname(binary), exist_ok=True) with open(binary, "w") as f: f.write("\n".join(binary_content) + "\n") os.chmod( binary, stat.S_IRUSR | stat.S_IXUSR | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH | stat.S_IXOTH, ) shutil.move(root_dir, args.out_path)