Added new bootstrap-socket package with a test

- History merged from Ghost, setup package structure and added a test
- This is exactly the kind of code that we should keep separate to Ghost, as it's rarely touched
- It's much easier to reason about and test when it's on its own

ghost/bootstrap-socket/.eslintrc.js

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+module.exports = {
+    plugins: ['ghost'],
+    extends: [
+        'plugin:ghost/node'
+    ]
+};

ghost/bootstrap-socket/LICENSE

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+MIT License
+
+Copyright (c) 2013-2020 Ghost Foundation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

ghost/bootstrap-socket/README.md

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+# Bootstrap Socket
+
+## Install
+
+`npm install @tryghost/bootstrap-socket --save`
+
+or
+
+`yarn add @tryghost/bootstrap-socket`
+
+
+## Usage
+
+
+## Develop
+
+This is a mono repository, managed with [lerna](https://lernajs.io/).
+
+Follow the instructions for the top-level repo.
+1. `git clone` this repo & `cd` into it as usual
+2. Run `yarn` to install top-level dependencies.
+
+
+## Run
+
+- `yarn dev`
+
+
+## Test
+
+- `yarn lint` run just eslint
+- `yarn test` run lint and tests
+
+
+
+
+# Copyright & License 
+
+Copyright (c) 2020 Ghost Foundation - Released under the [MIT license](LICENSE).

ghost/bootstrap-socket/index.js

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+module.exports = require('./lib/connect-and-send');

ghost/bootstrap-socket/package.json

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+{
+  "name": "@tryghost/bootstrap-socket",
+  "version": "0.0.0",
+  "repository": "https://github.com/TryGhost/Ghost-Utils/tree/master/packages/bootstrap-socket",
+  "author": "Ghost Foundation",
+  "license": "MIT",
+  "main": "index.js",
+  "scripts": {
+    "dev": "echo \"Implement me!\"",
+    "test": "NODE_ENV=testing mocha './test/**/*.test.js'",
+    "lint": "eslint . --ext .js --cache",
+    "posttest": "yarn lint"
+  },
+  "files": [
+    "index.js",
+    "lib"
+  ],
+  "publishConfig": {
+    "access": "public"
+  },
+  "devDependencies": {
+    "mocha": "8.1.1",
+    "should": "13.2.3",
+    "sinon": "9.0.2"
+  },
+  "dependencies": {}
+}

ghost/bootstrap-socket/test/.eslintrc.js

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+module.exports = {
+    plugins: ['ghost'],
+    extends: [
+        'plugin:ghost/test'
+    ]
+};

ghost/bootstrap-socket/test/connect-and-send.test.js

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+// Switch these lines once there are useful utils
+// const testUtils = require('./utils');
+require('./utils');
+
+const connectAndSend = require('../lib/connect-and-send');
+
+describe('Connect and send', function () {
+    it('Resolves a promise for a bad call', function () {
+        connectAndSend().should.be.fulfilled();
+    });
+});

ghost/bootstrap-socket/test/utils/assertions.js

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+/**
+ * Custom Should Assertions
+ *
+ * Add any custom assertions to this file.
+ */
+
+// Example Assertion
+// should.Assertion.add('ExampleAssertion', function () {
+//     this.params = {operator: 'to be a valid Example Assertion'};
+//     this.obj.should.be.an.Object;
+// });

ghost/bootstrap-socket/test/utils/index.js

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+/**
+ * Test Utilities
+ *
+ * Shared utils for writing tests
+ */
+
+// Require overrides - these add globals for tests
+require('./overrides');
+
+// Require assertions - adds custom should assertions
+require('./assertions');

ghost/bootstrap-socket/test/utils/overrides.js

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+// This file is required before any test is run
+
+// Taken from the should wiki, this is how to make should global
+// Should is a global in our eslint test config
+global.should = require('should').noConflict();
+should.extend();
+
+// Sinon is a simple case
+// Sinon is a global in our eslint test config
+global.sinon = require('sinon');