Initial, unchanged snapshot of original repo.

packages/process/.github/workflows/process.yml

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+name: Process Package
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+
+jobs:
+  correctness:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
+      - uses: dart-lang/setup-dart@9a04e6d73cca37bd455e0608d7e5092f881fd603
+        with:
+          sdk: dev
+      - name: Install dependencies
+        run: dart pub upgrade
+      - name: Verify formatting
+        run: dart format --output=none --set-exit-if-changed .
+      - name: Analyze project source
+        run: dart analyze --fatal-infos
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        sdk: [stable, beta, dev]
+    steps:
+      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
+      - uses: dart-lang/setup-dart@9a04e6d73cca37bd455e0608d7e5092f881fd603
+        with:
+          sdk: ${{ matrix.sdk }}
+      - name: Install dependencies
+        run: dart pub upgrade
+      - name: Run Tests
+        run: dart test

packages/process/.gitignore

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+### Dart template
+# Don’t commit the following directories created by pub.
+.buildlog
+.dart_tool
+.pub/
+build/
+packages
+.packages
+
+# Include when developing application packages.
+pubspec.lock
+
+# IDE
+.project
+.settings
+.idea
+.c9

packages/process/AUTHORS

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+# Below is a list of people and organizations that have contributed
+# to the Process project. Names should be added to the list like so:
+#
+#   Name/Organization <email address>
+
+Google Inc.

packages/process/CHANGELOG.md

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+#### 5.0.0
+
+* Remove the `covariant` keyword from `stderrEncoding` and `stdoutEncoding`
+  parameters.
+* Update dependencies to work on Dart 3.
+* Bumped min SDK dependency to nearest non-prerelease version (2.14.0)
+
+#### 4.2.4
+
+* Mark `stderrEncoding` and `stdoutEncoding` parameters as nullable again,
+  now that the upstream SDK issue has been fixed.
+
+#### 4.2.3
+
+* Rollback to version 4.2.1 (https://github.com/google/process.dart/issues/64)
+
+#### 4.2.2
+
+* Mark `stderrEncoding` and `stdoutEncoding` parameters as nullable.
+
+#### 4.2.1
+
+* Added custom exception types `ProcessPackageException` and
+  `ProcessPackageExecutableNotFoundException` to provide extra
+  information from exception conditions.
+
+#### 4.2.0
+
+* Fix the signature of `ProcessManager.canRun` to be consistent with
+  `LocalProcessManager`.
+
+#### 4.1.1
+
+* Fixed `getExecutablePath()` to only return path items that are
+  executable and readable to the user.
+
+#### 4.1.0
+
+* Fix the signatures of `ProcessManager.run`, `.runSync`, and `.start` to be
+  consistent with `LocalProcessManager`'s.
+* Added more details to the `ArgumentError` thrown when a command cannot be resolved
+  to an executable.
+
+#### 4.0.0
+
+* First stable null safe release.
+
+#### 4.0.0-nullsafety.4
+
+* Update supported SDK range.
+
+#### 4.0.0-nullsafety.3
+
+* Update supported SDK range.
+
+#### 4.0.0-nullsafety.2
+
+* Update supported SDK range.
+
+#### 4.0.0-nullsafety.1
+
+* Migrate to null-safety.
+* Remove record/replay functionality.
+* Remove implicit casts in preparation for null-safety.
+* Remove dependency on `package:intl` and `package:meta`.
+
+#### 3.0.13
+
+* Handle `currentDirectory` throwing an exception in `getExecutablePath()`.
+
+#### 3.0.12
+
+* Updated version constraint on intl.
+
+#### 3.0.11
+
+* Fix bug: don't add quotes if the file name already has quotes.
+
+#### 3.0.10
+
+* Added quoted strings to indicate where the command name ends and the arguments
+begin otherwise, the file name is ambiguous on Windows.
+
+#### 3.0.9
+
+* Fixed bug in `ProcessWrapper`
+
+#### 3.0.8
+
+* Fixed bug in `ProcessWrapper`
+
+#### 3.0.7
+
+* Renamed `Process` to `ProcessWrapper`
+
+#### 3.0.6
+
+* Added class `Process`, a simple wrapper around dart:io's `Process` class.
+
+#### 3.0.5
+
+* Fixes for missing_return analysis errors with 2.10.0-dev.1.0.
+
+#### 3.0.4
+
+* Fix unit tests
+* Update SDK constraint to 3.
+
+#### 3.0.3
+
+* Update dependency on `package:file`
+
+#### 3.0.2
+
+* Remove upper case constants.
+* Update SDK constraint to 2.0.0-dev.54.0.
+* Fix tests for Dart 2.
+
+#### 3.0.1
+
+* General cleanup
+
+#### 3.0.0
+
+* Cleanup getExecutablePath() to better respect the platform
+
+#### 2.0.9
+
+* Bumped `package:file` dependency
+
+### 2.0.8
+
+* Fixed method getArguments to qualify the map method with the specific
+  String type
+
+### 2.0.7
+
+* Remove `set exitCode` instances
+
+### 2.0.6
+
+* Fix SDK constraint.
+* rename .analysis_options file to analaysis_options.yaml.
+* Use covariant in place of @checked.
+* Update comment style generics.
+
+### 2.0.5
+
+* Bumped maximum Dart SDK version to 2.0.0-dev.infinity
+
+### 2.0.4
+
+* relax dependency requirement for `intl`
+
+### 2.0.3
+
+* relax dependency requirement for `platform`
+
+#### 2.0.2
+
+* Fix a strong mode function expression return type inference bug with Dart
+  1.23.0-dev.10.0.
+
+#### 2.0.1
+
+* Fixed bug in `ReplayProcessManager` whereby it could try to write to `stdout`
+  or `stderr` after the streams were closed.
+
+#### 2.0.0
+
+* Bumped `package:file` dependency to 2.0.1
+
+#### 1.1.0
+
+* Added support to transparently find the right executable under Windows.
+
+#### 1.0.1
+
+* The `executable` and `arguments` parameters have been merged into one
+  `command` parameter in the `run`, `runSync`, and `start` methods of
+  `ProcessManager`.
+* Added support for sanitization of command elements in
+  `RecordingProcessManager` and `ReplayProcessManager` via the `CommandElement`
+  class.
+
+#### 1.0.0
+
+* Initial version

packages/process/CONTRIBUTING.md

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+# How to contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution,
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult [GitHub Help] for more
+information on using pull requests.
+
+[GitHub Help]: https://help.github.com/articles/about-pull-requests/

packages/process/LICENSE

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+Copyright 2017, the Dart project authors. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google Inc. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

packages/process/README.md

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+# Process
+
+[![Build Status -](https://travis-ci.org/google/process.dart.svg?branch=master)](https://travis-ci.org/google/process.dart)
+[![Coverage Status -](https://coveralls.io/repos/github/google/process.dart/badge.svg?branch=master)](https://coveralls.io/github/google/process.dart?branch=master)
+
+A generic process invocation abstraction for Dart.
+
+Like `dart:io`, `package:process` supplies a rich, Dart-idiomatic API for
+spawning OS processes.
+
+Unlike `dart:io`, `package:process`:
+
+- Can be used to implement custom process invocation backends.
+- Comes with a record-replay implementation out-of-the-box, making it super
+  easy to test code that spawns processes in a hermetic way.

packages/process/analysis_options.yaml

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+include: package:lints/recommended.yaml
+
+analyzer:
+  errors:
+    # Allow having TODOs in the code
+    todo: ignore

packages/process/lib/process.dart

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+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'src/interface/exceptions.dart';
+export 'src/interface/local_process_manager.dart';
+export 'src/interface/process_manager.dart';
+export 'src/interface/process_wrapper.dart';