Typescript is already standard for larger Node applications, providing javascript with strong typing armor and improving code quality.

Here is a template for rapid deployment of TS and KOA into Tencent cloud function computing. The warehouse is as follows

  • Shfshanyue/Serverless-template-zh: Serverless Framework template and example (faster access)
  1. If you just want to build a blog
  2. Hosting static web sites with continuous integration using Netlify
  3. Deploy and speed up your static website using AliOSS
  4. Github Actions Introduction and practices for continuous integration
  5. Develop your first cloud function using the Serverless Framework
  6. Develop your first Koa application using serverless Component

Quick to use

Use this template to quickly create an application

$ serverless install --url https://github.com/shfshanyue/serverless-template-zh/tree/master/tencent-koa-ts --name koa-server
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Update the package as early as possible in project creation, using NPm-check-updates

$ npm run ncu
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Develop in a test environment

$ npm run dev
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File structure

. ├ ─ ─ dist /# Compile the file, and finally need to upload the directory├ ─ ─ node_modules / ├ ─ ─ app. The tsThe entry file must be named app├─ Package. json ├─ Package. json ├─ Bass Exercises# Serverless configuration file└ ─ ─ tsconfig. JsonCopy the code

app.ts

App.ts is the entry file for your business logic, and you can organize routes, business logic, models, etc., just like other Koa applications.

import Koa from 'koa'

const app = new Koa()

app.use(async (ctx, next) => {
  ctx.body = `hello, path: '${ctx.request.path}'`
})

app.listen(3333.(a)= > { console.log('Listening 3333')})module.exports = app
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serverless component

The Serverless Component can be thought of as a further abstraction of the FAAS and BAAS resource collection, using @serverless/ Hceh-koa

koa-app:
  component: '@serverless/tencent-koa'
  inputs:
    region: ap-guangzhou
    functionName: koa-function
    runtime: Nodejs10.15
    code: ./dist
    functionConf:
      timeout: 60
      memorySize: 128
    apigatewayConf:
      protocols:
        - https
      environment: release
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The deployment of

You need to prepare node_modules and compiled JS resources for the production environment before deployment.

To pack #
$ npm install typescript

Compile to JS
$ npm run build

Package the production environment package and move to the dist directory
# predeploy: npm ci --production && rsync -avz node_modules dist/
$ npm run predeploy

# Deploy to Tencent cloud$SLS koa - function [█ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █] 100% ETA: | | 0 s Speed: 314.98 k/koa - app:functionName:        koa-function
    functionOutputs: ap-guangzhou: Name: koa-function Runtime: Nodejs10.15 Handler: serverless-handler. Handler MemorySize: 128 Timeout: 60 Region: ap-guangzhou Namespace: default Description: This is afunctioncreated by serverless component region: ap-guangzhou apiGatewayServiceId: service-dture22u url: https://service-dture22u-1257314149.gz.apigw.tencentcs.com/release/ CNS: (empty array) 11 s holds the koa - holds the appdone
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As can be seen from the log, deployment to Tencent cloud only 11s, or very fast

Http invocation

Use NPM run dev directly locally and debug on the local port. In a production environment, HTTP calls are made using the URL provided in the SLS post-deployment log

$ curl https://service-dture22u-1257314149.gz.apigw.tencentcs.com/release/
hello, path: '/'# 
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disadvantages

Before we get started, a few downsides:

  1. The deployment is troublesome, you need to compile ts to JS first, and upload only the node_modules required by the production environment (all upload speed is too slow)
  2. Not supported locallylog 及 metrics, you need to go to Tencent cloud console to view

Because the deployment process is a little more complex, consider rewriting a Serverless Component for TS