Serverless optimization (#5)

* build:webpack

* tsconfig.json serverless

* Dockerfile

.dockerignore

@@ -0,0 +1,60 @@
+# Docker
+Dockerfile
+.dockerignore
+
+# Compiled output
+/dist
+node_modules
+error-graph.json
+
+# Logs
+logs
+*.log
+npm-debug.log*
+pnpm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+**/.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+/test
+**/*.spec.ts
+**/*.test.ts
+**/*.spec.tsx
+**/*.test.tsx
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+
+# Local settings
+.env*.local
+.env.test
+.eslintrc.js
+.prettierrc
+
+
+# Git
+.github
+.gitignore
+.git
+
+# Other
+README.md

Dockerfile

@@ -0,0 +1,50 @@
+## Development stage
+FROM amd64/node:18.18-alpine As development
+
+RUN mkdir -p /usr/src/app/node_modules && chown -R node:node /usr/src/app
+WORKDIR /usr/src/app
+# Copy application dependency manifests to the container image.
+# A wildcard is used to ensure copying both package.json AND package-lock.json (when available).
+# Copying this first prevents re-running npm install on every code change.
+COPY --chown=node:node package*.json ./
+
+USER node
+
+RUN npm ci
+
+COPY --chown=node:node . .
+
+## Build stage
+FROM amd64/node:18.18-alpine As build
+
+RUN mkdir -p /usr/src/app/node_modules && chown -R node:node /usr/src/app
+WORKDIR /usr/src/app
+
+COPY --chown=node:node package*.json ./
+
+# In order to run `npm run build` we need access to the Nest CLI which is a dev dependency. In the previous development stage we ran `npm ci` which installed all dependencies, so we can copy over the node_modules directory from the development image
+COPY --chown=node:node --from=development /usr/src/app/node_modules ./node_modules
+
+COPY --chown=node:node . .
+
+USER node
+
+RUN npm run build:webpack
+
+RUN npm ci --omit=dev && npm cache clean --force
+
+
+## Production stage
+FROM amd64/node:18.18-alpine As production
+
+RUN mkdir -p /usr/src/app/node_modules && chown -R node:node /usr/src/app
+WORKDIR /usr/src/app
+
+# Copy the bundled code from the build stage to the production image
+COPY --chown=node:node --from=build /usr/src/app/node_modules ./node_modules
+COPY --chown=node:node --from=build /usr/src/app/dist ./dist
+COPY --chown=node:node --from=build /usr/src/app/.env ./
+
+USER node
+
+CMD ["node", "dist/main.js"]

package.json

@@ -7,6 +7,7 @@
   "license": "UNLICENSED",
   "scripts": {
     "build": "nest build",
+    "build:webpack": "nest build --webpack",
     "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
     "format:check": "prettier --check \"src/**/*.ts\" \"test/**/*.ts\"",
     "start": "nest start",

src/app.module.ts

@@ -14,8 +14,10 @@ import {configModule, configProviders} from './config'
 @Module({
   imports: [
     configModule,
-    DevtoolsModule.register({http: process.env[NODE_ENV.name] === NODE_ENV.options.DEVELOPMENT}),
     UsersModule,
+    ...(process.env[NODE_ENV.name] === NODE_ENV.options.DEVELOPMENT
+      ? [DevtoolsModule.register({http: true})]
+      : []),
   ],
   controllers: [AppController],
   providers: [

tsconfig.json

@@ -1,6 +1,13 @@
 {
   "compilerOptions": {
-    "module": "commonjs",
+// For common server
+//    "module": "commonjs",
+
+// For serverless
+// https://docs.nestjs.com/fundamentals/lazy-loading-modules#getting-started
+    "module": "esnext",
+    "moduleResolution": "node",
+
     "declaration": true,
     "removeComments": true,
     "emitDecoratorMetadata": true,
@@ -16,6 +23,6 @@
     "noImplicitAny": true,
     "strictBindCallApply": true,
     "forceConsistentCasingInFileNames": true,
-    "noFallthroughCasesInSwitch": true
+    "noFallthroughCasesInSwitch": true,
   }
 }