Node.js Development in 2022

Transcript

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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
   

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3. ▰ Telegram channel, daily
   ▰ Voice chat, weekly
   ▰ Workshops, coming soon
   

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4. Today Agenda
   1. What is special about Node.js?
   2. Node.js v16 features
   3. Node.js ecosystem state
   4. What to learn?
   

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5. What is
   special about
   Node.js?
   

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8. Google pays for V8
   

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10. Node.js v16:
    ECMAScript
    

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11. 8.4 ➜ 9.4
    

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12. 1. String.prototype.replaceAll
    2. Object.hasOwn
    3. ArrayLike.at
    4. class static initialization blocks
    5. Error cause
    6. ...
    

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16. Error cause:
    

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17. Node.js v16:
    Timers
    Promises API
    

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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();
    

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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;
    }
    

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20. Node.js v16:
    AbortController
    

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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();
    

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23. Node.js v16:
    core modules
    

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24. // Before
    import http from 'http';
    // Node.js v16
    import http from 'node:http';
    

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25. Node.js v16:
    Source Maps
    

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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. (/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'
    }
    

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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"
    

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28. Node.js v16:
    npm
    

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29. Corepack: the Node.js' manager of
    package managers
    

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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
    

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31. Node.js v16:
    other
    

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33. AsyncLocalStorage and
    AsyncResource API are
    stable now. Perfect use
    case: tracing
    

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35. Running x86 vs arm64
    node resulted in a ~40%
    improvement.
    Node.js v16 has darwin-x64
    (Intel) and darwin-arm64
    (Apple Silicon) builds
    

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36. Node.js 16 supports
    setting process.env.TZ
    on windows.
    Farewell set-tz package
    process.env.TZ = 'UTC'
    

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37. Node.js
    ecosystem
    

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39. - TypeScript
    - GitHub
    - npm
    - Azure
    Most Affecting Company
    

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40. Top Contributor
    - Fastify
    - pino
    - Node
    - undici
    

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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
    

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42. What to
    learn?
    

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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
    

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44. Required by Business
    ● Soft Skills (English!)
    ● Reporting and analytics (Mixpanel)
    ● Headless CMS
    ● NoCode: use, integrate or migrate
    ● Personalization: Internet Of Behavior
    

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45. QUESTIONS TIME!
    Slides
    at the channel ➡
    

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