Migrate to TypeScript and provide Docker image

Change-Id: If1666614676b92dd396d363a3068eac288f212ba

.eslintignore

@@ -0,0 +1,2 @@
+node_modules/
+build/

.eslintrc.json

@@ -1,15 +1,13 @@
 {
-    "extends": ["eslint:recommended", "google"],
-    "parserOptions": {
-        "ecmaVersion": 2018,
-        "sourceType": "module"
-    },
-    "env": {
-        "es6": true,
-        "node": true
-    },
-    "rules": {
-        "no-console": "off",
-        "require-jsdoc": "off"
-    }
+  "extends": "./node_modules/gts/",
+  "rules": {
+    "no-console": "off",
+    "require-jsdoc": "off",
+    "@typescript-eslint/no-unused-vars": [
+      "error",
+      {
+        "argsIgnorePattern": "^_"
+      }
+    ]
+  }
 }

.gcloudignore

@@ -1,13 +1,7 @@
-# git
-.git
-
-# nodejs
-node_modules/
-yarn.lock
+#!include:.gitignore
 
-# sensitive
-*.json
-!package.json
+# git
+.git/
 
-# temp
-.DS_Store
+# GitHub
+.github/

.github/workflows/release.yml

@@ -0,0 +1,79 @@
+# GitHub Release Workflow
+# Triggers:
+# 1. prereleased - a pre-release is created
+# 2. edited - a release, pre-release, or draft release is edited
+# Steps:
+# 1. Build from source
+# 2. Upload a zip artifact to the GitHub Release
+# 3. Build & Publish a Docker Image to GitHub Container Registry
+
+name: release
+
+on:
+  release:
+    types: [prereleased, edited]
+
+env:
+  BUILD_DIR: "./dist/"
+  PACK_BUILDER: gcr.io/buildpacks/builder:v1
+  FUNCTION_NAME: ${{ github.event.repository.name }}
+  FUNCTION_TYPE: http
+  REGISTRY: ghcr.io
+  IMAGE: ${{ github.repository }}
+  TAG: ${{ github.event.release.tag_name }}
+  ARTIFACT: "${{ github.event.repository.name }}-${{ github.event.release.tag_name }}.zip"
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        # actions/[email protected]
+        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+
+      - name: Choose NodeJS version
+        # actions/[email protected]
+        uses: actions/setup-node@1f8c6b94b26d0feae1e387ca63ccbdc44d27b561
+        with:
+          node-version: 16
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run build script
+        run: npm run build
+
+      - name: Zip & Upload to GitHub Release
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          zip -r "$ARTIFACT" ./
+          gh release upload "$TAG" "$ARTIFACT" --clobber
+          rm -f "$ARTIFACT"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Setup Buildpacks Pack
+        # buildpacks/github-actions/[email protected]
+        uses: buildpacks/github-actions/setup-pack@0b5cd009ad32942e90a3f9aef30c0a55cc9f4aed
+
+      - name: Log in to the Container registry
+        # docker/[email protected]
+        uses: docker/login-action@42d299face0c5c43a0487c477f595ac9cf22f1a7
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build & Publish Docker image to GHCR
+        working-directory: ${{ env.BUILD_DIR }}
+        shell: bash
+        run: |
+          #!/usr/bin/env bash
+          set -euo pipefail
+          pack build \
+            --path ./ \
+            --builder $PACK_BUILDER \
+            --env GOOGLE_FUNCTION_SIGNATURE_TYPE=$FUNCTION_TYPE \
+            --env GOOGLE_FUNCTION_TARGET=$FUNCTION_NAME \
+            --tag "$REGISTRY/$IMAGE:latest" \
+            --publish "$REGISTRY/$IMAGE:$TAG"

.gitignore

@@ -1,10 +1,18 @@
-# nodejs
-node_modules/
-yarn.lock
-
 # sensitive
+# Eg: Service Account keyfiles
 *.json
+
+# nodejs
+node_modules/
 !package.json
+!package-lock.json
+!tsconfig.json
+
+# misc
+*~
+.DS_Store
+.vscode/
 
-# temp
-.DS_Store
+# artifacts
+dist/
+tsconfig.tsbuildinfo

.prettierrc.js

@@ -0,0 +1,3 @@
+module.exports = {
+  ...require('gts/.prettierrc.json')
+}