Switch to serverless

.circleci/config.yml

@@ -5,8 +5,7 @@ jobs:
       - image: circleci/node:10
     steps:
       - checkout
-      - run: yarn install
-      - run: yarn run build
+      - run: yarn install --frozen-lockfile
       - run: yarn run prettier --list-different
       - run: yarn run eslint
       - run: yarn flow check
@@ -22,12 +21,8 @@ jobs:
       - image: circleci/node:10
     steps:
       - checkout
-      - run: yarn install
-      - run: sudo yarn global add now --prefix /usr/local
-      - run: echo "{\"alias\":\"$NOW_ALIAS\"}" > now.json
-      - run: now --public --no-clipboard --token $NOW_TOKEN --env NODE_ENV=production --env APP_ID=$APP_ID --env LOG_LEVEL=$LOG_LEVEL --env WEBHOOK_SECRET=$WEBHOOK_SECRET --env PRIVATE_KEY=$PRIVATE_KEY --env SENTRY_DSN=$SENTRY_DSN
-      - run: now --token $NOW_TOKEN alias
-      - run: now --token $NOW_TOKEN rm backport --safe --yes
+      - run: yarn install --frozen-lockfile
+      - run: yarn serverless deploy
 
 workflows:
   version: 2

.gitignore

@@ -1,6 +1,5 @@
-/app/
+/.env
+/.serverless/
 /coverage/
 /node_modules/
 /reports/
-
-.env

.prettierignore

@@ -1,3 +1,3 @@
-/app/
+/.serverless/
 /coverage/
 /flow-typed/npm/

babel.config.js

@@ -0,0 +1,23 @@
+/* eslint-env node */
+
+"use strict";
+
+const presetEnv = require("@babel/preset-env");
+const presetFlow = require("@babel/preset-flow");
+
+// eslint-disable-next-line no-process-env
+const env = process.env.NODE_ENV;
+
+module.exports = {
+  presets: [
+    [
+      presetEnv,
+      {
+        targets: {
+          node: env === "test" ? true : "8.10.0",
+        },
+      },
+    ],
+    presetFlow,
+  ],
+};

package.json

@@ -1,55 +1,47 @@
 {
-  "dependencies": {
-    "github-backport": "^0.1.1",
-    "babel-cli": "^6.26.0",
-    "babel-core": "^6.26.3",
-    "babel-preset-env": "^1.7.0",
-    "babel-preset-flow": "^6.23.0",
-    "debug": "^3.1.0",
-    "probot": "^7.1.1",
-    "probot-commands": "^1.1.0",
-    "shared-github-internals": "^0.1.4"
-  },
   "description": "GitHub App to backport pull requests",
   "devDependencies": {
-    "babel-eslint": "^8.2.6",
-    "babel-jest": "^23.4.2",
-    "eslint": "^5.3.0",
-    "eslint-config-prettier": "^2.9.0",
-    "eslint-plugin-flowtype": "^2.50.0",
-    "eslint-plugin-import": "^2.13.0",
+    "@babel/core": "^7.1.0",
+    "@babel/preset-env": "^7.1.0",
+    "@babel/preset-flow": "^7.0.0",
+    "@probot/serverless-lambda": "^0.2.0",
+    "babel-core": "^7.0.0-bridge",
+    "babel-eslint": "^10.0.1",
+    "babel-jest": "^23.6.0",
+    "babel-loader": "^8.0.4",
+    "debug": "^4.1.0",
+    "eslint": "^5.7.0",
+    "eslint-config-prettier": "^3.0.1",
+    "eslint-plugin-flowtype": "^3.0.0",
+    "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-security": "^1.4.0",
-    "eslint-plugin-unicorn": "^5.0.0",
-    "flow-bin": "^0.78.0",
+    "eslint-plugin-unicorn": "^6.0.1",
+    "flow-bin": "^0.83.0",
     "flow-typed": "^2.5.1",
-    "jest": "^23.5.0",
-    "jest-junit": "^5.1.0",
-    "nodemon": "^1.17.2",
-    "prettier": "^1.14.2",
-    "smee-client": "^1.0.2",
-    "uuid": "^3.3.2"
+    "github-backport": "^0.1.2",
+    "jest": "^23.6.0",
+    "jest-junit": "^5.2.0",
+    "prettier": "^1.14.3",
+    "probot": "^7.3.1",
+    "probot-commands": "^1.1.0",
+    "promise-retry": "^1.1.1",
+    "serverless": "^1.32.0",
+    "serverless-webpack": "^5.2.0",
+    "shared-github-internals": "^0.1.5",
+    "string-replace-loader": "^2.1.1",
+    "uuid": "^3.3.2",
+    "webpack": "^4.20.2"
   },
   "engines": {
-    "node": ">= 6.11.2"
+    "node": ">= 8.10.0"
   },
-  "main": "app",
   "name": "backport",
-  "nodemonConfig": {
-    "exec": "yarn build && yarn start",
-    "watch": [
-      ".env",
-      "src"
-    ]
-  },
   "private": true,
   "scripts": {
-    "build": "babel src --out-dir app",
-    "dev": "nodemon",
     "eslint": "eslint . --max-warnings 0",
     "flow": "flow",
     "flow-typed": "flow-typed",
     "prettier": "prettier \"**/*.{js,json,md}\"",
-    "start": "probot run .",
     "test": "jest"
   }
 }

serverless.yml

@@ -0,0 +1,24 @@
+service: backport
+
+provider:
+  name: aws
+  runtime: nodejs8.10
+  stage: production
+
+functions:
+  probot:
+    handler: src/handler.probot
+    events:
+      - http: POST /
+      - http: GET /probot
+    environment:
+      APP_ID: ${env:APP_ID}
+      DISABLE_STATS: true
+      NODE_ENV: production
+      PRIVATE_KEY: ${env:PRIVATE_KEY}
+      SENTRY_DSN: ${env:SENTRY_DSN}
+      WEBHOOK_SECRET: ${env:WEBHOOK_SECRET}
+    memorySize: 512
+
+plugins:
+  - serverless-webpack

src/index.js → src/handler.js

@@ -1,10 +1,11 @@
 // @flow strict
 
+import { serverless } from "@probot/serverless-lambda";
 import commands from "probot-commands";
 
 import backport from "./backport";
 
-module.exports = (app: { log(string): void }) => {
+const probot = serverless((app: { log(string): void }) => {
   app.log("App loaded");
 
   commands(app, "backport", async (context, command) => {
@@ -25,4 +26,6 @@ module.exports = (app: { log(string): void }) => {
       })
     );
   });
-};
+});
+
+export { probot };