Initial commit

.github/workflows/checkin.yml

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+name: "PR Checks"
+on: [pull_request, push]
+
+jobs:
+  check_pr:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: "npm ci"
+      run: npm ci
+
+    - name: "npm run build"
+      run: npm run build
+
+    - name: "npm run test"
+      run: npm run test
+
+    - name: "check for uncommitted changes"
+      # Ensure no changes, but ignore node_modules dir since dev/fresh ci deps installed.
+      run: |
+        git diff --exit-code --stat -- . ':!node_modules' \
+        || (echo "##[error] found changed files after build. please 'npm run build && npm run format'" \
+                 "and check in all changes" \
+            && exit 1)

.gitignore

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+node_modules/
+__tests__/runner/*

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.

README.md

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+# JavaScript Action Template
+
+This template offers an easy way to get started writing a javascript action with TypeScript compile time support, unit testing with Jest and using the GitHub Actions Toolkit.
+
+## Getting Started
+
+See the walkthrough located [here](https://github.com/actions/toolkit/blob/master/docs/javascript-action.md).
+
+In addition to walking your through how to create an action, it also provides strategies for versioning, releasing and referencing your actions.

__tests__/main.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: 'Node 12 Template Action'
+description: 'Get started with Node actions'
+author: 'GitHub'
+inputs:
+  myInput:
+    description: 'Input to use'
+    default: 'world'
+runs:
+  using: 'node12'
+  main: 'lib/main.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
+}