Node.js Development in 2022

Transcript

2. Nikita Galkin Love and Know: ▰ How to make developers and business happy ▰ Technical and process debt elimination Believe that: ▰ Any problem must be solved at the right level ▰ Software is easy. People are hard ▰ A problem should be highlighted, an idea should be "sold", a solution should be demonstrated Links: Site GitHub Twitter Facebook 2
3. ▰ Telegram channel, daily ▰ Voice chat, weekly ▰ Workshops, coming soon
4. Today Agenda 1. What is special about Node.js? 2. Node.js v16 features 3. Node.js ecosystem state 4. What to learn?
5. What is special about Node.js?
8. Google pays for V8
10. Node.js v16: ECMAScript
11. 8.4 ➜ 9.4
12. 1. String.prototype.replaceAll 2. Object.hasOwn 3. ArrayLike.at 4. class static initialization blocks 5. Error cause 6. ...
16. Error cause:
17. Node.js v16: Timers Promises API
18. // Before function wait(timeout) { return new Promise((r) => setTimeout(r, timeout)); } // Node.js v16 import {setTimeout as wait } from "timers/promises"; async function example() { await wait(5000); console.log('After 500ms'); } example();
19. import { setInterval, } from 'timers/promises'; const interval = 100; for await (const startTime of setInterval(interval, Date.now())) { const now = Date.now(); console.log(now); if ((now - startTime) > 1000) break; }
20. Node.js v16: AbortController
22. const http = require('http'); const ac = new AbortController(); const signal = ac.signal; http.request('https://example.org', { signal }, (res) => { /** … **/ }); // Cancel the request! ac.abort();
23. Node.js v16: core modules
24. // Before import http from 'http'; // Node.js v16 import http from 'node:http';
25. Node.js v16: Source Maps
26. node:net:1420 throw new ERR_SERVER_ALREADY_LISTEN(); ^ Error [ERR_SERVER_ALREADY_LISTEN]: Listen method has been called more than once without closing. at new NodeError (node:internal/errors:371:5) at Server.listen (node:net:1420:11) at Object.<anonymous> (/Users/example.js:10:8) at Module._compile (node:internal/modules/cjs/loader:1101:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10) at Module.load (node:internal/modules/cjs/loader:981:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12) at node:internal/main/run_main_module:17:47 { code: 'ERR_SERVER_ALREADY_LISTEN' }
27. // Before npm install source-map-support // Node.js v16 node server.js --enable-source-maps // or use env var NODE_OPTIONS="--enable-source-maps"
28. Node.js v16: npm
29. Corepack: the Node.js' manager of package managers
30. 1. npm install as fast as yarn 2. package-lock.json v2 format 3. npm exec 4. workspaces 5. overrides (resolutions from yarn) are in development
31. Node.js v16: other
33. AsyncLocalStorage and AsyncResource API are stable now. Perfect use case: tracing
35. Running x86 vs arm64 node resulted in a ~40% improvement. Node.js v16 has darwin-x64 (Intel) and darwin-arm64 (Apple Silicon) builds
36. Node.js 16 supports setting process.env.TZ on windows. Farewell set-tz package process.env.TZ = 'UTC'
37. Node.js ecosystem
39. - TypeScript - GitHub - npm - Azure Most Affecting Company
40. Top Contributor - Fastify - pino - Node - undici
41. Open Source Startups Funding • Gatsby – round B, May 2020, 28m • Strapi – round A, may 2020, 10m • Cube Dev – round A, Jul 2021, 15.5m • Bubble – round A, Jul 2021, 100m • Apollo – round D, Aug 2021, 130m • Vercel – round D, Nov 2021, 150m
42. What to learn?
43. Required by industry • EcmaScript & TypeScript • DevOps: CI/CD, IoS, 12factor • Cloud Native: one of AWS, GCP, Azure and Kubernetes • Web API: OpenAPI, GraphQL, AsyncAPI, etc
44. Required by Business • Soft Skills (English!) • Reporting and analytics (Mixpanel) • Headless CMS • NoCode: use, integrate or migrate • Personalization: Internet Of Behavior
45. QUESTIONS TIME! Slides at the channel ➡