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@cowboyd State of Enjoyment

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@cowboyd @cowboyd

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@cowboyd https://frontside.io

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@cowboyd numbers can increment

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@cowboyd Redux

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@cowboyd MobX

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@cowboyd setState

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@cowboyd Ember Controller

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@cowboyd Why?

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@cowboyd numbers can increment

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@cowboyd Arrays can push

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@cowboyd Booleans can toggle

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@cowboyd What is a Boolean?

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@cowboyd False True toggle() toggle() set(false) set(true)

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@cowboyd False True toggle() toggle() set(false) set(true)

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@cowboyd False True toggle() toggle() set(false) set(true)

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@cowboyd False True toggle() toggle() set(false) set(false)

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@cowboyd False True toggle() toggle() set(false) set(true) set(false) set(true)

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@cowboyd False True toggle() toggle() set(false) set(true) set(false) set(true) Boolean

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@cowboyd

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@cowboyd False True toggle() toggle() set(false) set(true) set(false) set(true)

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@cowboyd

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@cowboyd False True toggle() toggle() set(false) set(true) set(false) set(true)

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@cowboyd False True toggle() toggle() set(false) set(true) set(false) set(true)

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@cowboyd Reinventing Very Small Wheels One very small wheel at a time

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@cowboyd Small Wheels: Boolean Controller

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@cowboyd Unstated

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@cowboyd setState

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@cowboyd Relax Charles it’s just numbers. It’s just booleans

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@cowboyd Booleans aren’t hard They just get hard very quickly with composition.

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@cowboyd Boolean

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@cowboyd Boolean Todo isCompleted

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@cowboyd Boolean Todo isCompleted Boolean Todo Array isCompleted … Boolean Todo isCompleted TodoList todos

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@cowboyd Redux

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@cowboyd Numbers increment Booleans toggle Arrays push

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@cowboyd

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@cowboyd

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@cowboyd

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@cowboyd Bring the Type y’all!

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@cowboyd numbers can increment

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@cowboyd Redux

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@cowboyd What about TypeScript? (and friends)

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@cowboyd Helps your DX, not your runtime.

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@cowboyd Then what do we want?

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@cowboyd JavaScript* *JavaScript is a registered trademark of Oracle Corporation

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@cowboyd JavaScript*

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@cowboyd JavaScript* - Easy to learn

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@cowboyd JavaScript* - Easy to learn - Cross framework

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@cowboyd “JavaScript”

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@cowboyd numbers can increment

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@cowboyd “JavaScript”

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@cowboyd

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@cowboyd Mutation!

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@cowboyd Easy at rest

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@cowboyd Difficult in motion

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@cowboyd Immutable Difficult at rest Easy in motion

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@cowboyd Decisions

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@cowboyd Decisions

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@cowboyd Maybe?

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@cowboyd Spoiler Alert no

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@cowboyd

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@cowboyd

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@cowboyd

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@cowboyd

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@cowboyd

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@cowboyd

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@cowboyd Microstates.js Composable types for immutable data. https://github.com/microstates/microstates.js

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@cowboyd Tiny API

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@cowboyd

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@cowboyd

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@cowboyd

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@cowboyd

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@cowboyd Tiny API implicit knowledge

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@cowboyd Benefits

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@cowboyd Benefits Immutable

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@cowboyd Benefits: immutable Computed Properties

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@cowboyd Benefits: immutable Memoization

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@cowboyd Benefits: immutable Memoization

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@cowboyd Benefits Value Stability

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@cowboyd Benefits: Value Stability Key Attributes

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@cowboyd Benefits: Value Stability Key Benefits

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@cowboyd Benefits: Value Stability

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@cowboyd Benefits: Value Stability

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@cowboyd Benefits: Value Stability

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@cowboyd Benefits: Value Stability

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@cowboyd Benefits: Value Stability Developer Managed Identity

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@cowboyd Benefits: Value Stability `===` everywhere

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@cowboyd Benefits: Value Stability

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@cowboyd Benefits: Value Stability

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@cowboyd setState Benefits: Value Stability

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@cowboyd setState Benefits: Value Stability

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@cowboyd Redux Benefits: Value Stability

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@cowboyd Redux Benefits: Value Stability

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@cowboyd MobX Benefits: Value Stability

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@cowboyd MobX Benefits: Value Stability

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@cowboyd Microstates Benefits: Value Stability

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@cowboyd Microstates Benefits: Value Stability

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@cowboyd Performant Without optimization Benefits: Value Stability

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@cowboyd Conclusion There are a lot of tradeoffs in state management.

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@cowboyd jQuery

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@cowboyd

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@cowboyd Component A new primitive for rendering

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@cowboyd stateQuery

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@cowboyd Microstates A new primitive for state management

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@cowboyd Thank You.