Initial code migration

.gitignore

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+.idea
+.DS_Store
+npm-debug.log
+
+lib/
+.tmp/
+typings/
+coverage/
+node_modules/
+
+# Real key file should not be checked in
+test/resources/key.json
+
+# Release tarballs should not be checked in
+firebase-admin-*.tgz

CONTRIBUTING.md

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+# Contributing | Firebase Admin Node.js SDK
+
+Thank you for contributing to the Firebase community!
+
+ - [Have a usage question?](#question)
+ - [Think you found a bug?](#issue)
+ - [Have a feature request?](#feature)
+ - [Want to submit a pull request?](#submit)
+ - [Need to get set up locally?](#local-setup)
+
+
+## <a name="question"></a>Have a usage question?
+
+We get lots of those and we love helping you, but GitHub is not the best place for them. Issues
+which just ask about usage will be closed. Here are some resources to get help:
+
+- Go through the [guides](https://firebase.google.com/docs/admin/setup/)
+- Read the full [API reference](https://firebase.google.com/docs/reference/admin/node/)
+
+If the official documentation doesn't help, try asking a question on the
+[Firebase Google Group](https://groups.google.com/forum/#!forum/firebase-talk/) or one of our
+other [official support channels](https://firebase.google.com/support/).
+
+**Please avoid double posting across multiple channels!**
+
+
+## <a name="issue"></a>Think you found a bug?
+
+Yeah, we're definitely not perfect!
+
+Search through [old issues](https://github.com/firebase/firebase-admin-node/issues) before
+submitting a new issue as your question may have already been answered.
+
+If your issue appears to be a bug, and hasn't been reported,
+[open a new issue](https://github.com/firebase/firebase-admin-node/issues/new). Please use the
+provided bug report template and include a minimal repro.
+
+If you are up to the challenge, [submit a pull request](#submit) with a fix!
+
+
+## <a name="feature"></a>Have a feature request?
+
+Great, we love hearing how we can improve our products! Share you idea through our
+[feature request support channel](https://firebase.google.com/support/contact/bugs-features/).
+
+
+## <a name="submit"></a>Want to submit a pull request?
+
+Sweet, we'd love to accept your contribution!
+[Open a new pull request](https://github.com/firebase/firebase-admin-node/pull/new/master) and fill
+out the provided template.
+
+**If you want to implement a new feature, please open an issue with a proposal first so that we can
+figure out if the feature makes sense and how it will work.**
+
+Make sure your changes pass our linter and the tests all pass on your local machine. We've hooked
+up this repo with continuous integration to double check those things for you.
+
+Most non-trivial changes should include some extra test coverage. If you aren't sure how to add
+tests, feel free to submit regardless and ask us for some advice.
+
+Finally, you will need to sign our
+[Contributor License Agreement](https://cla.developers.google.com/about/google-individual),
+and go through our code review process before we can accept your pull request.
+
+### 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](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+
+
+## <a name="local-setup"></a>Need to get set up locally?
+
+### Initial Setup
+
+Run the following commands from the command line to get your local environment set up:
+
+```bash
+$ git clone https://github.com/firebase/firebase-admin-node.git
+$ cd firebase-admin-node    # go to the firebase-admin-node directory
+$ npm install -g gulp       # globally install gulp task runner
+$ npm install               # install local npm build / test dependencies
+```
+
+In order to run the tests, you also need to
+[download the `gcloud` CLI](https://cloud.google.com/sdk/downloads), run the following command, and
+follow the prompts:
+
+```bash
+$ gcloud beta auth application-default login
+```
+
+### Lint, Build, and Test
+
+Source files are written in [TypeScript](https://www.typescriptlang.org/) and linted using
+[TSLint](https://palantir.github.io/tslint/). Tests are run on the compiled JavaScript files.
+
+The lint, build, and test process is kicked off via the default `gulp` task, although you can also
+run each task individually:
+
+```bash
+$ gulp         # Lint, build, and test
+$ gulp lint    # Just lint
+$ gulp build   # Just build
+$ gulp test    # Just test
+```
+
+### Running Tests
+
+There are two test suites: unit and integration. The unit test suite is intended to be run during
+development and the integration test suite is intended to be run before packaging up release
+candidates.
+
+To run the unit test suite:
+
+```
+$ gulp   # Lint, build, and run unit test suite
+```
+
+To run the integration test suite:
+
+```
+$ node test/integration   # Run integration test suite
+```
+
+The integration test suite requires you to generate a service account key JSON file for the
+**admin-sdks-test** Firebase project and save it to `test/resources/key.json`. You can generate this
+from the
+[**Service Accounts**](https://console.firebase.google.com/project/admin-sdks-test/settings/serviceaccounts/adminsdk)
+tab of that project's settings page.
+
+### Repo Organization
+
+Here are some highlights of the directory structure and notable source files
+
+* `src/` - Source directory, written in TypeScript.
+  * `auth/` - Auth source files, including the user management, credential, and token generator
+    APIs.
+  * `database/` - Database source files, imported as a minified JavaScript file from a separate
+    repo.
+  * `messaging/` - Messaging source files, including the FCM send APIs.
+  * `utils/` - Utilities for doing things such as sending requests, handling errors, and validating
+    inputs.
+  * `index.ts` - Main SDK entry point which registers the Firebase services.
+  * `index.d.ts` - Hand-crafted TypeScript declaration file.
+  * `firebase-app.ts` - `FirebaseApp` implementation.
+  * `firebase-namespace.ts` - `FirebaseNamespace` implementation.
+  * `default-namespace.ts` - Exports a `FirebaseNamespace` instance which acts as the top-level SDK
+    export.
+* `lib/` - Output directory for all compiled files.
+* `test/` - Unit and integration test suites.
+  * `unit/` - Unit test suite written in Mocha which extensively tests the source code using mocks
+    for all network requests.
+    * `index.spec.js` - Main unit test entry point which imports the tests to be run.
+    * `utils.js` - Testing utilities.
+  * `integration/` - Integration test suite which actually hits live Firebase services.
+  * `resources/` - Provides mocks for several variables as well as mock service account keys.
+* `.github/` - Contribution instructions as well as issue and pull request templates.
+* `createReleaseTarball.sh` - Generates a new release tarball and ensures it passes all tests.
+* `gulpfile.js` - Defines the `gulp` tasks.
+* `tslint.json` - TypeScript linting rules.
+* `tsconfig.json` - TypeScript configuration options.

ISSUE_TEMPLATE.md

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+### [READ] Step 1: Are you in the right place?
+
+  * For issues or feature requests related to __the code in this repository__
+    file a Github issue.
+    * If this is a __feature request__ make sure the issue title starts with "FR:".
+  * For general technical questions, post a question on [StackOverflow](http://stackoverflow.com/)
+    with the firebase tag.
+  * For general Firebase discussion, use the [firebase-talk](https://groups.google.com/forum/#!forum/firebase-talk)
+    google group.
+  * For help troubleshooting your application that does not fall under one
+    of the above categories, reach out to the personalized
+    [Firebase support channel](https://firebase.google.com/support/).
+
+### [REQUIRED] Step 2: Describe your environment
+
+  * Operating System version: _____
+  * Firebase SDK version: _____
+  * Library version: _____
+  * Firebase Product: _____ (auth, database, storage, etc)
+
+### [REQUIRED] Step 3: Describe the problem
+
+#### Steps to reproduce:
+
+What happened? How can we make the problem occur?
+This could be a description, log/console output, etc.
+
+#### Relevant Code:
+
+```
+// TODO(you): code here to reproduce the problem
+```