view models for component driven
TRANSCRIPT
@daloog#eatdog
Component Driven
…and modular UI code with ViewModel
Alexey Demedetskyi
@daloog#eatdog
“Design is never done.”
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Art
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Art
Engineering
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Art
Engineering
UI - ?
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Driver?
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Feedback loop
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Definition of done
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Evolution?
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Better result
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Better tools
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Art
Engineering
UI - ?
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Art
Engineering
UI
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UI is the hardest CS problem
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Zero* dependency** rule
* - not actually zero** - internal is ok
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Module
External dependency
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TDD?
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Singletons
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Parent is always responsible for child
dependencies
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ModuleInternal
dependency
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Module context always should be
external
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Zero dependency
UI?
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ComponentUI
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Action
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VM == Props
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MVVM
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React
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VM + DynamicAnimations, partial updates, etc.
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Deposit
Time
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Deposit
Time
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Deposit
Time
++ - - -
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State = f(t)
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Event = ΔState
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State = ∫Event
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CQRS Event
sourcing
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Data driven
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VM + ComplexityContainers, transition
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https://medium.com/@dan_abramov/smart-and-dumb-components-7ca2f9a7c7d0#.62d4jggzw
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FriendsList VC
Friend VC
FriendsList VM
Friend VM
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Shared state
