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#!/usr/bin/env python3
# Copyright 2025 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import argparse
import os
import sys
"""
Helper script for running jscodeshift codemods over a set of files.
"""
_HERE_PATH = os.path.dirname(__file__)
_SRC_PATH = os.path.normpath(
os.path.join(_HERE_PATH, '..', '..', '..', '..', '..'))
sys.path.append(os.path.join(_SRC_PATH, 'third_party', 'node'))
import node
"""
Instructions to run this script locally.
1) Create a package.json file in the same folder with the following contents.
{
"dependencies": {
"jscodeshift": "^0.15.1"
}
}
2) Run 'npm install' in the same folder.
3) Invoke the script from the root directory of the repository. For example
python3 ui/webui/resources/tools/codemods/jscodeshift.py \
--transform ui/webui/resources/tools/codemods/my_transform.js
--files ui/webui/resources/cr_elements/cr_button/cr_button.ts
python3 ui/webui/resources/tools/codemods/jscodeshift.py \
--transform ui/webui/resources/tools/codemods/my_transform.js
--files `find ui/webui/resources/cr_elements/cr_button/ -name '*.ts'`
"""
def main(argv):
parser = argparse.ArgumentParser()
parser.add_argument('--transform', required=True)
parser.add_argument('--files', nargs='*', required=True)
args = parser.parse_args(argv)
if not os.path.exists(args.transform):
print(
f'Error: jscodeshift.py: Could not file transform file \'args.transform\'',
file=sys.stderr)
sys.exit(1)
print(f'Migrating {len(args.files)} files...')
# Update TS file.
node.RunNode([
os.path.join(_HERE_PATH, 'node_modules/jscodeshift/bin/jscodeshift.js'),
'--transform=' + args.transform,
'--extensions=ts',
'--parser=ts',
'--no-babel',
'--fail-on-error',
] + args.files)
print('DONE')
if __name__ == '__main__':
main(sys.argv[1:])
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