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git-subtree-dir: packages/db-version-check
git-subtree-mainline: 12013cf
git-subtree-split: 8b3e097

packages/db-version-check/.circleci/config.yml

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+# Javascript Node CircleCI 2.0 configuration file
+#
+# Check https://circleci.com/docs/2.0/language-javascript/ for more details
+#
+version: 2
+jobs:
+  deploy:
+    docker:
+      - image: circleci/node:12.14.1
+    working_directory: ~/repo
+    steps:
+      - checkout
+      - run: npm install
+      - run: npx semantic-release
+
+workflows:
+  version: 2
+  deploy:
+    jobs:
+      - deploy:
+          context: reaction-publish-semantic-release
+          filters:
+            branches:
+              only: trunk

packages/db-version-check/.gitignore

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+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+yarn.lock
+dist
+node_modules

packages/db-version-check/.nvmrc

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+12.14.1

packages/db-version-check/.prettierrc

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+arrowParens: always

packages/db-version-check/CODE_OF_CONDUCT.md

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+# Reaction Commerce Code of Conduct
+
+All Community Guidelines content is licensed under a [Creative Commons Attribution](https://creativecommons.org/licenses/by/3.0/) license.
+
+Like the technical community as a whole, the Reaction team and community is made up of a mixture of professionals and volunteers from all over the world, working on every aspect of the mission - including mentorship, teaching, and connecting people.
+
+Diversity is one of our huge strengths, but it can also lead to communication issues and unhappiness. To that end, we have a few ground rules that we ask people to adhere to. This code applies equally to founders, mentors, and those seeking help and guidance.
+
+This isn’t an exhaustive list of things that you can’t do. Rather, take it in the spirit in which it’s intended - a guide to make it easier to enrich all of us and the broader communities in which we participate.
+
+This code of conduct applies to all spaces managed by Reaction Commerce. This includes our [development chat room](https://gitter.im/reactioncommerce/reaction), [forums](https://forums.reactioncommerce.com), [blog](https://blog.reactioncommerce.com), mailing lists, [issue tracker](https://github.com/reactioncommerce/reaction/issues), [project boards](https://github.com/reactioncommerce/reaction/projects), Reaction events and meetups, and any other forums or service created by the core project team which the community uses for communication. In addition, violations of this code outside these spaces may affect a person's ability to participate within them.
+
+If you believe someone is violating the code of conduct, we ask that you report it by emailing <mailto:[email protected]>. For more details, please see our [Reporting Guidelines](https://docs.reactioncommerce.com/reaction-docs/master/reporting-guide).
+
+-   **Be friendly and patient.**
+
+-   **Be welcoming.** We strive to be a community that welcomes and supports people of all backgrounds and identities. This includes, but is not limited to members of any race, ethnicity, culture, national origin, color, immigration status, social and economic class, educational level, sex, sexual orientation, gender identity and expression, age, size, family status, political belief, religion, and mental and physical ability.
+
+-   **Be considerate.** Your work will be used by other people, and you in turn will depend on the work of others. Any decision you take will affect users and colleagues, and you should take those consequences into account when making decisions. Remember that we're a world-wide community, so you might not be communicating in someone else's primary language.
+
+-   **Be respectful.** Not all of us will agree all the time, but disagreement is no excuse for poor behavior and poor manners. We might all experience some frustration now and then, but we cannot allow that frustration to turn into a personal attack. It’s important to remember that a community where people feel uncomfortable or threatened is not a productive one. Members of the Reaction community should be respectful when dealing with other members as well as with people outside the Reaction community.
+
+-   **Be careful in the words that you choose.** We are a community of professionals, and we conduct ourselves professionally. Be kind to others. Do not insult or put down other participants. Harassment and other exclusionary behavior aren't acceptable. This includes, but is not limited to:
+
+    -   Violent threats or language directed against another person.
+    -   Discriminatory jokes and language.
+    -   Posting sexually explicit or violent material.
+    -   Posting (or threatening to post) other people's personally identifying information ("doxing").
+    -   Personal insults, especially those using racist or sexist terms.
+    -   Unwelcome sexual attention.
+    -   Advocating for, or encouraging, any of the above behavior.
+    -   Repeated harassment of others. In general, if someone asks you to stop, then stop.
+
+-   **When we disagree, try to understand why.** Disagreements, both social and technical, happen all the time and Reaction is no exception. It is important that we resolve disagreements and differing views constructively. Remember that we’re different. The strength of Reaction comes from its varied community, people from a wide range of backgrounds. Different people have different perspectives on issues. Being unable to understand why someone holds a viewpoint doesn’t mean that they’re wrong. Don’t forget that it is human to err and blaming each other doesn’t get us anywhere. Instead, focus on helping to resolve issues and learning from mistakes.
+
+## Questions?
+
+If you have questions, please see the [FAQs](https://docs.reactioncommerce.com/reaction-docs/master/guideline-faqs). If that doesn't answer your questions, feel free to [contact us](mailto:[email protected]).

packages/db-version-check/LICENSE

@@ -0,0 +1,176 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+   END OF TERMS AND CONDITIONS

packages/db-version-check/README.md

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+# @reactioncommerce/db-version-check
+
+An NPM package that provides migrations for use with the `@reactioncommerce/migrator` CLI tool should use this package to check whether data is at the correct version before running any database commands.
+
+## Usage
+
+This package exports only one function: `doesDatabaseVersionMatch`.
+
+```js
+import doesDatabaseVersionMatch from "@reactioncommerce/db-version-check";
+
+const ok = await doesDatabaseVersionMatch({
+  // `db` is a Db instance from the `mongodb` NPM package,
+  // such as what is returned when you do `client.db()`
+  db,
+  // These must match one of the namespaces and versions
+  // your package exports in the `migrations` named export
+  expectedVersion: 2,
+  namespace: "my-package-name",
+  // Defines what to do if no current version is found for this track in
+  // the database. By default, the check will fail. That is, we will assume
+  // that some data must need to be migrated. If you have a way of checking
+  // whether it's an empty database or confirming that no migrations are
+  // needed, you can do that and pass `true` here. Then the check will
+  // succeed and the current version for the track will be set to
+  // `expectedVersion`. Alternatively, pass a function that returns
+  // a Promise that returns `true` or `false`. This way you can avoid
+  // database lookups unless a decision is necessary.
+  async setToExpectedIfMissing() {
+    const anyAccount = await db.collection("Accounts").findOne();
+    // If there are no accounts, it's probably a brand new database
+    // so we can assume all our data will be at the latest version
+    // and mark it as such in the database.
+    return !anyAccount;
+  }
+});
+
+if (!ok) {
+  throw new Error('Database needs migrating. The "my-package-name" namespace must be at version 2.');
+}
+```
+
+## Commit Messages
+
+To ensure that all contributors follow the correct message convention, each time you commit your message will be validated with the [commitlint](https://www.npmjs.com/package/@commitlint/cli) package, enabled by the [husky](https://www.npmjs.com/package/husky) Git hooks manager.
+
+Examples of commit messages: https://github.com/semantic-release/semantic-release
+
+## Publication to NPM
+
+The `@reactioncommerce/db-version-check` package is automatically published by CI when commits are merged or pushed to the `trunk` branch. This is done using [semantic-release](https://www.npmjs.com/package/semantic-release), which also determines version bumps based on conventional Git commit messages.
+
+## Developer Certificate of Origin
+We use the [Developer Certificate of Origin (DCO)](https://developercertificate.org/) in lieu of a Contributor License Agreement for all contributions to Reaction Commerce open source projects. We request that contributors agree to the terms of the DCO and indicate that agreement by signing-off all commits made to Reaction Commerce projects by adding a line with your name and email address to every Git commit message contributed:
+```
+Signed-off-by: Jane Doe <[email protected]>
+```
+
+You can sign-off your commit automatically with Git by using `git commit -s` if you have your `user.name` and `user.email` set as part of your Git configuration.
+
+We ask that you use your real full name (please no anonymous contributions or pseudonyms) and a real email address. By signing-off your commit you are certifying that you have the right to submit it under the [Apache 2.0 License](./LICENSE).
+
+We use the [Probot DCO GitHub app](https://github.com/apps/dco) to check for DCO sign-offs of every commit.
+
+If you forget to sign-off your commits, the DCO bot will remind you and give you detailed instructions for how to amend your commits to add a signature.
+
+## License
+Copyright 2020 Reaction Commerce
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+
+See the License for the specific language governing permissions and
+limitations under the License.