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.gitignore

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+!node_modules/
+__tests__/runner/*

.prettierrc.json

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+{
+    "printWidth": 80,
+    "tabWidth": 2,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": false,
+    "arrowParens": "avoid",
+    "parser": "typescript"
+  }

LICENSE

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+
+The MIT License (MIT)
+
+Copyright (c) 2018 GitHub, Inc. and contributors
+
+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.

__tests__/setup-java.test.ts

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+describe('TODO - Add a test suite', () => {
+  it('TODO - Add a test', async () => {});
+});

action.yml

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+name: 'Setup Java Action'
+description: 'Setup your runner with Java'
+author: 'GitHub'
+inputs: 
+  version:
+    description: 'Version of JDK to use'
+runs:
+  using: 'node12'
+  main: 'lib/setup-java.js'

docs/contributors.md

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+# Contributors
+
+### Checkin
+
+- Do checkin source (src)
+- Do checkin build output (lib)
+- Do checkin runtime node_modules
+- Do not checkin devDependency node_modules (husky can help see below)
+
+### devDependencies
+
+In order to handle correctly checking in node_modules without devDependencies, we run [Husky](https://github.com/typicode/husky) before each commit.
+This step ensures that formatting and checkin rules are followed and that devDependencies are excluded. To make sure Husky runs correctly, please use the following workflow:
+
+```
+npm install                                 # installs all devDependencies including Husky
+git add abc.ext                             # Add the files you've changed. This should include files in src, lib, and node_modules (see above)
+git commit -m "Informative commit message"  # Commit. This will run Husky
+```
+
+During the commit step, Husky will take care of formatting all files with [Prettier](https://github.com/prettier/prettier) as well as pruning out devDependencies using `npm prune --production`.
+It will also make sure these changes are appropriately included in your commit (no further work is needed)

jest.config.js

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+module.exports = {
+  clearMocks: true,
+  moduleFileExtensions: ['js', 'ts'],
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  testRunner: 'jest-circus/runner',
+  transform: {
+    '^.+\\.ts$': 'ts-jest'
+  },
+  verbose: true
+}

lib/setup-java.js

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+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const core = __importStar(require("@actions/core"));
+function run() {
+    return __awaiter(this, void 0, void 0, function* () {
+        const myInput = core.getInput('myInput');
+        core.debug(`Hello ${myInput}`);
+    });
+}
+run();