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Getting Into HNPWA with Next.js at Google I/O 2017 Extended in Seoul, Korea

Getting Into HNPWA with Next.js at Google I/O 2017 Extended in Seoul, Korea

Sharing my experience of making HNPWA with Next.js frameworks built on the top of react

Jimmy Moon

July 03, 2017
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  1. GETTING INTO

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  3. Hacker News
    is a social news website focusing on computer
    science and entrepreneurship. running by y
    combinator, Paul Graham, that have many of clones

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  7. CHECKPOINT
    pwa, w
    e
    b m
    a
    n
    i
    f
    e
    s
    t , s
    e
    r
    v
    i
    c
    e w
    o
    r
    k
    e
    r ...
    all of v
    i
    e
    w
    s (Top, New, Best ...)
    display 3
    0 i
    t
    e
    m
    s per-page
    _
    9
    0
    /
    1
    0
    0
    _ s
    c
    o
    r
    e by lighthouse auditing
    first interactive in < 5
    s by webpagetest

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  8. AND MORE
    manual inspection by addy osmani
    application shell pattern (mandatory)
    best to work cross-browser (optional)
    supports offline caching of hn data (optional)
    server-side rendering (optional)

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  11. most popular news site in tech
    simlple main view with list
    detail views
    trimmed data for offline

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  15. popular frameworks with r
    e
    a
    c
    t / p
    r
    e
    a
    c
    t
    production ready
    easy integration with own cloud
    simple, but powerful performance
    zero-configuration of code-splitting and ssr

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  16. pwa features is not ready yet
    not in the list on hnpwa
    fan of zeti production

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  17. create-next-app
    page layout & hackernews api
    custom server & deployment
    pwa features, web manifest & service worker
    auditing
    optimization, #sizematters

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  18. View Slide

  19. View Slide

  20. yarn create next-app

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  22. create-next-app
    page layout & hackernews api
    custom server & deployment
    pwa features, web manifest & service worker
    auditing
    optimization, #sizematters

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  23. View Slide

  24. View Slide

  25. View Slide

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  27. HACKERNEWS API
    official api on Firebase
    unofficial restful-styled api

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  29. e
    x
    p
    o
    r
    t d
    e
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    s
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    I
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    P
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    o
    p
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    (
    {
    q
    u
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    , p
    a
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    n
    a
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    e
    }
    ) {
    /
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    f
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    '
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    r
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    u
    r
    n {
    s
    t
    o
    r
    i
    e
    s
    }
    }
    }

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  30. create-next-app
    page layout & hackernews api
    custom server & deployment
    pwa features, web manifest & service worker
    auditing
    optimization, #sizematters

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  31. CUSTOM SERVER
    next.js supports server-side-rendering api
    in order to customize routes

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  32. c
    o
    n
    s
    t e
    x
    p
    r
    e
    s
    s = r
    e
    q
    u
    i
    r
    e
    (
    '
    e
    x
    p
    r
    e
    s
    s
    '
    ) /
    / i
    n c
    a
    s
    e o
    f e
    x
    p
    r
    e
    s
    s
    c
    o
    n
    s
    t n
    e
    x
    t = r
    e
    q
    u
    i
    r
    e
    (
    '
    n
    e
    x
    t
    '
    )
    c
    o
    n
    s
    t a
    p
    p = n
    e
    x
    t
    (
    {
    D
    E
    V
    _
    O
    R
    _
    N
    O
    T
    }
    )
    c
    o
    n
    s
    t h
    a
    n
    d
    l
    e = a
    p
    p
    .
    g
    e
    t
    R
    e
    q
    u
    e
    s
    t
    H
    a
    n
    d
    l
    e
    r
    (
    ) /
    / c
    r
    e
    a
    t
    e a h
    a
    n
    d
    l
    e
    r
    a
    p
    p
    .
    p
    r
    e
    p
    a
    r
    e
    (
    )
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    h
    e
    n
    (
    (
    ) =
    > {
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    s
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    )
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    , r
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    ) =
    > {
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    n h
    a
    n
    d
    l
    e
    (
    r
    e
    q
    , r
    e
    s
    ) /
    / r
    e
    t
    u
    r
    n r
    e
    n
    d
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    d p
    a
    g
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    }
    )
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    e
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    .
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    3
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    :
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    )
    }
    )
    }
    )

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  33. DEPLOYMENT WITH NOW
    cloud service, very friendly to node.js
    deployment with zero-configuration

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  34. NOW COMMANDS
    # l
    i
    s
    t
    i
    n
    g
    n
    o
    w l
    s
    # r
    e
    m
    o
    v
    e a
    l
    l o
    f d
    e
    v
    e
    l
    o
    p
    m
    e
    n
    t v
    e
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    s
    i
    o
    n
    n
    o
    w r
    m m
    y
    a
    p
    p -
    -
    s
    a
    f
    e
    # d
    e
    p
    l
    o
    y
    m
    e
    n
    t a
    s o
    s
    s
    n
    o
    w -
    -
    n
    a
    m
    e
    =
    m
    y
    a
    p
    p -
    -
    p
    u
    b
    l
    i
    c

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  35. View Slide

  36. create-next-app
    page layout & hackernews api
    custom server & deployment
    pwa features, web manifest & service worker
    auditing
    optimization, #sizematters

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  37. PWA FEATURES
    web manifest for installable webapp
    service worker for offline experience

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  38. WEB MANIFEST
    n
    p
    m i
    n
    s
    t
    a
    l
    l -
    g @
    p
    w
    a
    /
    m
    a
    n
    i
    f
    e
    s
    t
    p
    w
    a
    -
    m
    a
    n
    i
    f
    e
    s
    t .
    /
    s
    t
    a
    t
    i
    c .
    /
    s
    t
    a
    t
    i
    c
    /
    i
    c
    o
    n
    s -
    -
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    c
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    n
    s
    =
    .
    /
    a
    s
    s
    e
    t
    s
    /
    i
    c
    o
    n
    .

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  40. SERVICE WORKER
    <
    S
    e
    r
    v
    i
    c
    e
    W
    o
    r
    k
    e
    r
    > react component
    w
    o
    r
    k
    b
    o
    x , brand new service worker lib
    n
    e
    x
    t
    -
    p
    r
    e
    c
    a
    c
    h
    e , precache list for next.js

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  41. i
    m
    p
    o
    r
    t
    S
    c
    r
    i
    p
    t
    s
    (
    '
    h
    t
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    s
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    /
    /
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    n
    p
    k
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    .
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    /
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    w
    @
    0
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    0
    .
    2
    '
    )
    c
    o
    n
    s
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    o
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    b
    o
    x
    S
    W = n
    e
    w W
    o
    r
    k
    b
    o
    x
    S
    W
    (
    {
    c
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    e
    n
    t
    s
    C
    l
    a
    i
    m
    : t
    r
    u
    e
    }
    )
    /
    / p
    l
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    d
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    p
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    e
    }
    )
    w
    o
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    k
    b
    o
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    .
    r
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    t
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    r
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    i
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    e
    r
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    u
    t
    e
    (
    '
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    '
    , w
    o
    r
    k
    b
    o
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    .
    s
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    a
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    s
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    v
    a
    l
    i
    d
    a
    t
    e
    (
    )
    )

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  42. View Slide

  43. next-precache
    supports u
    n
    i
    q
    u
    e s
    t
    y
    l
    e
    d r
    o
    u
    t
    i
    n
    g of next.js
    n
    e
    x
    t
    -
    p
    r
    e
    c
    a
    c
    h
    e -
    -
    s
    w
    =
    .
    /
    s
    e
    r
    v
    i
    c
    e
    -
    w
    o
    r
    k
    e
    r
    .
    j
    s

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  44. create-next-app
    page layout & hackernews api
    custom server & deployment
    pwa features, web manifest & service worker
    auditing
    optimization, #sizematters

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  45. AUDITING #sizematters
    w
    e
    b
    p
    a
    g
    e
    t
    e
    s
    t
    .
    o
    r
    g , test in emerging mobile env
    l
    i
    g
    h
    t
    h
    o
    u
    s
    e , ref point for modern webapp
    b
    u
    n
    d
    l
    e s
    i
    z
    e , analyze size of your package

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  46. View Slide

  47. View Slide

  48. View Slide

  49. View Slide

  50. ANALYZING BUNDLE SIZE
    to reduce bundle size of critical route path. If there is
    downsizing for about 100kb, which the bytes will be
    estimated 1s in emerging mobile

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  51. webpack-bundle-size-analyzer
    f
    i
    r
    e
    b
    a
    s
    e
    : 6
    1
    8
    .
    7
    3 K
    B (
    5
    1
    .
    5
    %
    )
    r
    e
    a
    c
    t
    : 2
    2
    .
    5 K
    B (
    3
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    %
    )
    r
    e
    a
    c
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    d
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    : 1
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    7
    .
    2
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    B (
    2
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    6
    %
    )
    n
    e
    x
    t
    : 9
    3
    .
    9
    3 K
    B (
    1
    6
    .
    0
    %
    )

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  52. create-next-app
    page layout & hackernews api
    custom server & deployment
    pwa features, web manifest & service worker
    auditing
    optimization, #sizematters

    View Slide

  53. BEFORE YOU GO FOR OVER IT

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  54. View Slide

  55. View Slide

  56. View Slide

  57. View Slide

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  59. OPTIMIZING IN NEXT.JS
    s
    s
    r , enhanced first meaningful time
    p
    a
    g
    e b
    a
    s
    e
    d c
    o
    d
    e
    -
    s
    p
    l
    i
    t
    t
    i
    n
    g
    p
    r
    e
    l
    o
    a
    d , to ensure fast delivery resources
    n
    e
    x
    t
    -
    p
    r
    e
    c
    a
    c
    h
    e , cache the pages splitted
    k
    i
    c
    k
    i
    n
    g m
    e
    g
    a b
    u
    n
    d
    l
    e

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  60. KICKING MEGA BUNDLE
    pull back hacker package from the app
    lightweight javascript framework

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  61. PULL BACK HACKERNEWS FROM THE APP
    /
    / s
    e
    r
    v
    i
    c
    e w
    o
    r
    k
    e
    r
    i
    m
    p
    o
    r
    t
    S
    c
    r
    i
    p
    t
    s
    (
    '
    h
    t
    t
    p
    s
    :
    /
    /
    .
    .
    .
    /
    f
    i
    r
    e
    b
    a
    s
    e
    j
    s
    /
    4
    .
    1
    .
    2
    /
    f
    i
    r
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    b
    a
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    e
    -
    a
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    j
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    s
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    t
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    p
    s
    :
    /
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    .
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    /
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    /
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    )
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    i
    n
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    (
    f
    i
    r
    e
    b
    a
    s
    e
    , {
    w
    a
    t
    c
    h
    : t
    r
    u
    e
    }
    )

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  62. PULL BACK HACKERNEWS FROM THE APP API CONT'
    /
    / u
    n
    i
    v
    e
    r
    s
    a
    l f
    e
    t
    c
    h
    i
    m
    p
    o
    r
    t n
    o
    d
    e
    F
    e
    t
    c
    h f
    r
    o
    m '
    i
    s
    o
    m
    o
    r
    p
    h
    i
    c
    -
    f
    e
    t
    c
    h
    '
    i
    f (
    i
    n
    N
    o
    d
    e
    ) {
    f
    e
    t
    c
    h = n
    o
    d
    e
    F
    e
    t
    c
    h
    }
    c
    o
    n
    s
    t r
    e
    s = a
    w
    a
    i
    t f
    e
    t
    c
    h
    (
    `
    $
    {
    h
    o
    s
    t
    }
    /
    h
    a
    c
    k
    e
    r
    n
    e
    w
    s
    /
    $
    {
    p
    a
    t
    h
    n
    a
    m
    e
    }
    `
    )

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  63. View Slide

  64. /
    / f
    i
    r
    e
    b
    a
    s
    e
    : 6
    1
    8
    .
    7
    3 K
    B (
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    r
    e
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    .
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    .
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    %
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    %
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    t
    : 9
    3
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    9
    3 K
    B (
    1
    6
    .
    0
    %
    )

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  68. LIGHTWEIGHT JAVASCRIPT FRAMEWORK
    c
    o
    n
    f
    i
    g
    .
    r
    e
    s
    o
    l
    v
    e
    .
    a
    l
    i
    a
    s = {
    "
    r
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    a
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    "
    : "
    p
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    a
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    -
    c
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    t
    /
    d
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    "
    ,
    "
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    a
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    -
    d
    o
    m
    "
    : "
    p
    r
    e
    a
    c
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    -
    c
    o
    m
    p
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    /
    d
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    /
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    a
    c
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    -
    c
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    m
    p
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    "
    ,
    }

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  69. PREACT
    /
    / f
    i
    r
    e
    b
    a
    s
    e
    : 6
    1
    8
    .
    7
    3 K
    B (
    5
    1
    .
    5
    %
    )
    p
    r
    e
    a
    c
    t
    : 1
    9
    .
    9
    8 K
    B (
    4
    .
    2
    0
    %
    ) /
    / r
    e
    a
    c
    t
    : 2
    2
    .
    5 K
    B
    p
    r
    e
    a
    c
    t
    -
    c
    o
    m
    p
    a
    t
    : 1
    6
    .
    7
    5 K
    B (
    3
    .
    5
    2
    %
    ) /
    / r
    e
    a
    c
    t
    -
    d
    o
    m
    : 1
    2
    7
    .
    2
    4 K
    B
    n
    e
    x
    t
    : 9
    3
    .
    9
    3 K
    B (
    1
    9
    .
    8
    %
    )
    .
    .
    .

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  73. FURTHER MORE
    cleaned and optimized resources
    reactive ux, defer rendering in twitter mobile
    latest tools for bundling and javascript
    the cutting edge of features on the platform
    discover your secrets and share it

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  75. View Slide