blob: 1b392808fb70d6f07de8b4c5ea1387b6aa1be6f9 [file] [log] [blame]
# Copyright 2021 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import argparse
import collections
import json
import os
import re
import sys
_CWD = os.getcwd()
_HERE_DIR = os.path.dirname(__file__)
_SRC_DIR = os.path.normpath(os.path.join(_HERE_DIR, '..', '..'))
sys.path.append(os.path.join(_SRC_DIR, 'third_party', 'node'))
import node
import node_modules
def _write_tsconfig_json(gen_dir, tsconfig):
if not os.path.exists(gen_dir):
with open(os.path.join(gen_dir, 'tsconfig.json'), 'w') as generated_tsconfig:
json.dump(tsconfig, generated_tsconfig, indent=2)
def main(argv):
parser = argparse.ArgumentParser()
parser.add_argument('--deps', nargs='*')
parser.add_argument('--gen_dir', required=True)
parser.add_argument('--path_mappings', nargs='*')
parser.add_argument('--root_dir', required=True)
parser.add_argument('--out_dir', required=True)
parser.add_argument('--in_files', nargs='*')
parser.add_argument('--definitions', nargs='*')
parser.add_argument('--composite', action='store_true')
args = parser.parse_args(argv)
root_dir = os.path.relpath(args.root_dir, args.gen_dir)
out_dir = os.path.relpath(args.out_dir, args.gen_dir)
TSCONFIG_BASE_PATH = os.path.join(_HERE_DIR, 'tsconfig_base.json')
tsconfig = collections.OrderedDict()
tsconfig['extends'] = args.tsconfig_base \
if args.tsconfig_base is not None \
else os.path.relpath(TSCONFIG_BASE_PATH, args.gen_dir)
tsconfig['compilerOptions'] = collections.OrderedDict()
tsconfig['compilerOptions']['rootDir'] = root_dir
tsconfig['compilerOptions']['outDir'] = out_dir
if args.composite:
tsbuildinfo_name = 'tsconfig.tsbuildinfo'
tsconfig['compilerOptions']['composite'] = True
tsconfig['compilerOptions']['declaration'] = True
tsconfig['compilerOptions']['tsBuildInfoFile'] = tsbuildinfo_name
tsconfig['files'] = []
if args.in_files is not None:
# Source .ts files are always resolved as being relative to |root_dir|.
tsconfig['files'].extend([os.path.join(root_dir, f) for f in args.in_files])
if args.definitions is not None:
# Handle custom path mappings, for example chrome://resources/ URLs.
if args.path_mappings is not None:
path_mappings = collections.defaultdict(list)
for m in args.path_mappings:
mapping = m.split('|')
path_mappings[mapping[0]].append(os.path.join('./', mapping[1]))
tsconfig['compilerOptions']['paths'] = path_mappings
if args.deps is not None:
tsconfig['references'] = [{'path': dep} for dep in args.deps]
_write_tsconfig_json(args.gen_dir, tsconfig)
# Delete any obsolete .ts files (from previous builds) corresponding to .js
# |in_files| in the |root_dir| folder, as they would cause the following error
# to be thrown:
# "error TS5056: Cannot write file '...' because it would be overwritten by
# multiple input files."
# This can happen when a ts_library() is migrating JS to TS one file at a time
# and a bot is switched from building a later CL to building an earlier CL.
if args.in_files is not None:
for f in args.in_files:
[pathname, extension] = os.path.splitext(f)
if extension == '.js':
to_check = os.path.join(args.root_dir, pathname + '.ts')
if os.path.exists(to_check):
node_modules.PathToTypescript(), '--project',
os.path.join(args.gen_dir, 'tsconfig.json')
if args.composite:
# `.tsbuildinfo` is generated by TypeScript for incremenetal compilation
# freshness checks. Since GN already decides which ts_library() targets are
# dirty, `.tsbuildinfo` is not needed for our purposes and is deleted.
# Moreover `.tsbuildinfo` can cause flakily failing builds since the TS
# compiler checks the `.tsbuildinfo` file and sees that none of the source
# files are changed and does not regenerate any output, without checking
# whether output files have been modified/deleted, which can lead to bad
# builds (missing files or picking up obsolete generated files).
os.remove(os.path.join(args.gen_dir, tsbuildinfo_name))
if args.in_files is not None:
with open(os.path.join(args.gen_dir, 'tsconfig.manifest'), 'w') \
as manifest_file:
manifest_data = {}
manifest_data['base_dir'] = args.out_dir
manifest_data['files'] = \
[re.sub(r'\.ts$', '.js', f) for f in args.in_files]
json.dump(manifest_data, manifest_file)
if __name__ == '__main__':