Restore and organize wonders-server

packages/wonders-server/.eslintrc.json

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+{
+    "env": {
+        "es2021": true,
+        "node": true
+    },
+    "extends": [
+        "standard"
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 12,
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "rules": {
+      "comma-dangle": ["error", "only-multiline"],
+      "padded-blocks": "warn",
+      "no-multiple-empty-lines": "warn",
+      "space-before-function-paren": "off"
+    }
+}

packages/wonders-server/Dockerfile

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+FROM node:16-alpine
+
+RUN apk add --no-cache tini
+
+RUN yarn global add lerna
+
+WORKDIR /opt/wonders-server
+COPY packages/ketchup-common/package.json packages/ketchup-common/
+COPY packages/ketchup-server/package.json packages/ketchup-server/
+COPY packages/wonders-common/package.json packages/wonders-common/
+COPY packages/wonders-server/package.json packages/wonders-server/
+COPY package.json yarn.lock lerna.json ./
+RUN lerna bootstrap
+
+COPY . ./
+RUN lerna run build
+
+ENTRYPOINT ["tini", "--"]
+CMD ["node", "packages/wonders-server"]
+EXPOSE 80

packages/wonders-server/package.json

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+{
+  "name": "wonders-server",
+  "version": "0.1.3",
+  "description": "WebSocket-based rollback state synchronization server.",
+  "main": "dist/index.js",
+  "license": "MIT",
+  "private": true,
+  "dependencies": {
+    "ketchup-server": "^0.1.1",
+    "lodash": "^4.17.20",
+    "wonders-common": "^0.1.1",
+    "ts-node": "^9.1.1",
+    "ws": "^7.4.2"
+  },
+  "devDependencies": {
+    "@tsconfig/node14": "^1.0.0",
+    "@types/jest": "^26.0.20",
+    "@types/lodash": "^4.14.168",
+    "@types/node": "^14.14.22",
+    "@types/ws": "^7.4.0",
+    "@typescript-eslint/eslint-plugin": "^4.14.1",
+    "@typescript-eslint/parser": "^4.14.1",
+    "eslint": "^7.18.0",
+    "jest": "^26.6.3",
+    "ts-jest": "^26.5.0",
+    "typescript": "^4.1.3"
+  },
+  "optionalDependencies": {
+    "bufferutil": "^4.0.3",
+    "utf-8-validate": "^5.0.4"
+  },
+  "scripts": {
+    "build": "tsc --declaration",
+    "start": "node dist"
+  }
+}

packages/wonders-server/src/index.ts

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+import WebSocket from 'ws'
+import KetchupServer from 'ketchup-server'
+import { initial, reducer } from 'wonders-common'
+
+const port = parseInt(process.env.PORT ?? '80')
+
+const wss = new WebSocket.Server({ port })
+
+const ks = new KetchupServer(initial, reducer)
+
+wss.on('connection', ws => {
+  ks.addRemoteClient(ws)
+})
+
+console.log(`Listening on ${port}`)
+
+function shutdown() {
+  console.log('Shutting down')
+  wss.close()
+}
+process.on('SIGINT', shutdown)
+process.on('SIGTERM', shutdown)

packages/wonders-server/tsconfig.json

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+{
+  "extends": "@tsconfig/node14/tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "dist"
+  }
+}