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The future of JavaScript

Lucas Santos
July 10, 2023
Technology
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The future of JavaScript

Lucas Santos

July 10, 2023
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Transcript

  1. The future of JS
    it's not about what it is, but what it could be

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  2. who am I_
    {twitter, youtube, linkedin…}.lsantos.dev
    software engineer_
    [email protected]

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  3. agenda_
    - How JS actually evolves
    - What's coming next
    - 👍 - stage 4 proposals
    - 🤩 - stage 3 proposals
    - 🤔 - stage 2 proposals
    - 👀 - stage 1 proposals
    - Final remarks and refs

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  4. How JS evolves?

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  5. JS is actually not JS

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  6. What is JS

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  7. What is JS

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  8. What is JS

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  9. What is JS
    this is JavaScript

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  10. What is JS
    this is JavaScript

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  11. What is JS
    this is JavaScript

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  12. What is JS
    this is JavaScript
    these are the caretakers

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  13. TC39 is organized in stages

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  14. there are 5 stages (or 4)

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  15. summary
    - Stage 0 - Draft
    - Stage 1 - Better draft
    - Stage 2 - Definition
    - Stage 3 - Refinements
    - Stage 4 - Shipping 🚀

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  16. warning

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  17. Stage 4
    things that are shipped!

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  18. RegEx unicode sets mode

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  19. aka: the v flag

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  20. RegEx v flag

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  21. RegEx v flag

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  22. RegEx v flag

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  23. RegEx v flag https://lsantos.dev/v8-regexp-v

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  24. RegEx v flag https://lsantos.dev/mdn-regex-set

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  25. Change array by copy

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  26. change array by copy

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  27. change array by copy

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  28. change array by copy

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  29. change array by copy https://lsantos.dev/mdn-array-copy

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  30. Stage 3
    things that are done

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  31. temporal

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  32. temporal

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  33. temporal

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  34. temporal
    https://blog.lsantos.dev/temporal-api/

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  35. temporal
    https://lsantos.dev/tc39-temporal

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  36. what's the status?

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  37. testing temporal

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  38. explicit resource
    management

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  39. aka: using

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  40. using

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  41. using

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  42. using

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  43. using
    constructor
    called

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  44. using
    constructor
    called
    conn[Symbol.dispose]() called as
    scope ends

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  45. async using

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  46. async using
    https://lsantos.dev/tc39-using

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  47. JS native decorators

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  48. JS native decorators

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  49. JS native decorators

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  50. JS native decorators

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  51. JS native decorators

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  52. JS native decorators: class methods

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  53. JS native decorators: class assessors

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  54. JS native decorators: class fields

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  55. JS native decorators: classes

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  56. we cannot decorate parameters https://lsantos.dev/tc39-parameter-decorators

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  57. more resources
    https://lsantos.dev/tc39-decorators

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  58. more resources
    https://lsantos.dev/tc39-decorators
    https://blog.lsantos.dev/javascript-decorators/

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  59. Other proposals

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  60. other proposals
    - New methods to Set https://lsantos.dev/tc39-set-methods

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  61. other proposals
    - (async)Iterator helpers https://lsantos.dev/tc39-iterator-helpers

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  62. Stage 2
    things that are getting there

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  63. throw expressions

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  64. throw expressions

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  65. throw expressions

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  66. throw expressions
    https://lsantos.dev/tc39-throw

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  67. immutable structures

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  68. records: immutable objects

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  69. records: immutable objects

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  70. records: immutable objects

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  71. tuples: immutable arrays

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  72. tuples: immutable arrays https://lsantos.dev/tc39-records

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  73. JSON.parseImmutable

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  74. pipeline operator

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  75. pipeline operator

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  76. pipeline operator

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  77. pipeline operator
    https://lsantos.dev/tc39-pipeline-op

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  78. iterator ranges

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  79. Iterator.range

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  80. Other proposals

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  81. other proposals
    - Array grouping https://github.com/tc39/proposal-array-grouping

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  82. other proposals
    - parseImmutable https://github.com/tc39/proposal-json-parseimmutable

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  83. other proposals
    - map.upsert https://github.com/tc39/proposal-upsert

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  84. Stage 1
    things

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  85. types in JS

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  86. types in JS
    https://lsantos.dev/tc39-js-types

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  87. do expressions

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  88. do expressions
    https://lsantos.dev/tc39-do-expr

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  89. pattern matching

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  90. pattern matching
    https://lsantos.dev/tc39-pattern-matching

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  91. Other proposals

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  92. other proposals
    - Function memoization https://github.com/tc39/proposal-function-memo
    - Reversible split https://github.com/tc39/proposal-reversible-string-split
    - slice notation https://github.com/tc39/proposal-slice-notation
    - operator overloading https://github.com/tc39/proposal-operator-overloading
    - object pick/omit https://github.com/tc39/proposal-object-pick-or-omit
    - parameter decorator https://github.com/tc39/proposal-class-method-parameter-decorators
    - structs and mutexes https://github.com/tc39/proposal-structs
    - Intl.MessageFormat https://github.com/tc39/proposal-intl-messageformat

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  93. refs_
    - https://lsantos.dev/tc-39-type-annotations
    - https://lsantos.dev/tc39-process
    - https://lsantos.dev/tc39-stage-1
    - https://lsantos.dev/tc39-stage-2
    - https://lsantos.dev/tc39-stage-3
    - https://lsantos.dev/tc39-stage-4
    - https://lsantos.dev/ecma-262

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  94. This talk: https://lsantos.dev/whats-next-for-js

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  95. thank you_
    lsantos.dev

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