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Composition API

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Why do we need one more API?

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We had problems! Code Organisation Logic Extraction

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Options Based API Component Logic can be split in 6-10 options. data, props, computed, methods, watch and life cycle methods

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Logic Extraction There is no efficient logic extraction mechanism in current API.

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Problems with Mixins Namespace Collision Obscure and unclear origin

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Problems with Mixin Factories Namespace Collision Obscure and unclear origin

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Problems with Scoped Slots Locked in Templates Multiple Sources Limited Intellisense

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Problems with Type Inference this type is complex Limited Intellisense

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How does Composition API solve this?

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Crash Course JavaScript define function call functions

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Crash Course Composition API define function call functions

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Code

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Resources vue-composition-api-rfc.netlify.com github.com/vuejs/composition-api github.com/znck/dogsay