Add github action boilerplate with typescript

.eslintignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

.eslintrc.js

@@ -0,0 +1,22 @@
+module.exports = {
+  plugins: ['@typescript-eslint', 'jest'],
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:@typescript-eslint/recommended',
+    'prettier/@typescript-eslint',
+    'plugin:jest/recommended'
+  ],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    sourceType: 'module'
+  },
+  rules: {
+    '@typescript-eslint/explicit-function-return-type': 'off'
+  },
+  env: {
+    node: true,
+    es6: true,
+    'jest/globals': true
+  }
+}

.github/workflows/test.yaml

@@ -0,0 +1,23 @@
+name: Build and test
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - releases/*
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: |
+          yarn --frozen-lockfile
+          yarn all
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          numbers: 1,2,3

.gitignore

@@ -80,7 +80,7 @@ typings/
 
 # Nuxt.js build / generate output
 .nuxt
-dist
+# dist
 
 # Gatsby files
 .cache/
@@ -102,3 +102,6 @@ dist
 
 # TernJS port file
 .tern-port
+
+# Ignore output files
+lib/

.prettierignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

.prettierrc.json

@@ -0,0 +1,7 @@
+{
+  "printWidth": 80,
+  "semi": false,
+  "singleQuote": true,
+  "trailingComma": "none",
+  "arrowParens": "avoid"
+}

.vscode/settings.json

@@ -0,0 +1,8 @@
+{
+  "editor.formatOnSave": true,
+  "editor.codeActionsOnSaveTimeout": 2000,
+  "editor.codeActionsOnSave": {
+    "source.fixAll.eslint": true
+  },
+  "typescript.tsdk": "./node_modules/typescript/lib"
+}

__tests__/sum.test.ts

@@ -0,0 +1,9 @@
+import { sum } from '../src/sum'
+
+test('sum up numbers', () => {
+  expect(sum(1, 2)).toBe(3)
+})
+
+test('sum up numbers with NaN', () => {
+  expect(sum(NaN, 1, 2)).toBe(3)
+})

action.yaml

@@ -0,0 +1,10 @@
+name: "Typescript Action Template"
+description: "Provide a description here"
+author: "yukin01"
+inputs:
+  numbers:
+    description: "Comma separated numbers that you want to sum"
+    required: true
+runs:
+  using: "node12"
+  main: "dist/index.js"