Deep Vue 3: From History to Engine Internals
Not a Vue 3 tutorial โ a Vue 3 internals book. From Evan You's three rewrite decisions to the complete internal mechanics of the Proxy reactivity engine, template compiler, and Diff algorithm. Four-layer structure per chapter serves developers at every level: Level 1 direct conclusions, Level 2 engine internals, Level 3 Vue 3 source code and design docs, Level 4 high-frequency pitfalls. 32 chapters covering history, reactivity, compilation, renderer, Composition API, state/routing, animation/errors/security, and performance engineering.
32
Chapters
Free
Forever
Table of Contents
Ch01
Three Rewrites of Vue: From Angular Directives to Proxy Reactivity
Ch02
Birth of Composition API: RFC 0013, the Mixin Disaster and Community Debate
Ch03
Vue 3 Design Philosophy: Tree-shakable Architecture, Cross-Platform Renderer, Type-First
Ch04
Proxy and Reflect: Complete Semantics of 13 Traps and Reactive Infrastructure
Ch05
effect, track, trigger: The Complete Dependency Tracking Engine of Vue 3
Ch06
ref and reactive: Internal Differences, Auto-Unwrapping Boundaries and Selection Guide
Ch07
computed: Lazy Evaluation, Caching Mechanism and Circular Dependency Handling
Ch08
watch and Scheduler: Async Update Queue, Flush Strategy and Race Condition Cleanup
Ch09
effectScope, customRef, triggerRef: Design Intent Behind Advanced Reactivity APIs
Ch10
Full Compilation Pipeline: parse, transform, codegen End-to-End
Ch11
Static Hoisting and PatchFlag: How Compile-Time Performance Hints Work
Ch12
Block Tree: Dynamic Node Tracking and Targeted Diff Design
Ch13
v-model, v-for and Custom Directives: Compilation Output and Runtime Handling
Ch14
VNode Internals and ShapeFlags Bitwise Operations
Ch15
Diff Algorithm: LIS Step-by-Step Derivation and the Dual Role of key
Ch16
Component Mount and Update: Complete mountComponent to patch Execution Chain
Ch17
Async Components, Suspense, Teleport and KeepAlive: Implementation Internals
Ch18
Cross-Platform Renderer: Design Philosophy and Implementation of Custom Renderers
Ch19
setup() Execution Context: Call Timing, getCurrentInstance and Lifecycle Registration
Ch20
provide/inject: Cross-Level Dependency Injection Lookup Chain and Type Safety
Ch21
Composables Design: State Ownership, Side Effect Cleanup and Common Pitfalls
Ch22
script setup Compilation: Macro Expansion, Top-Level Binding Exposure and Constraints
Ch23
Pinia Source Analysis: defineStore Internals and Reactive Store Creation
Ch24
Vue Router 4: Route Matching Algorithm and Async Navigation Guard Pipeline
Ch25
TypeScript Integration: Generic Compiler Macros, Type Inference Chain and Engineering Type System
Ch26
Form Handling: v-model Compilation, Validation Patterns and VeeValidate Internals
Ch27
Transition Animation System: CSS Class State Machine, JS Hooks and FLIP Principle
Ch28
Error Boundaries and Global Error Handling: onErrorCaptured Propagation and Monitoring
Ch29
Security: v-html XSS Attack Surface, Template Injection and CSP Defense
Ch30
Rendering Performance: Virtual Lists, v-memo, shallowRef and Memory Leak Detection
Ch31
Bundle and Loading Performance: Tree-shaking, Code Splitting and Preloading
Ch32
SSR, Nuxt 3 and Production: Hydration, Caching Strategy and CI/CD Pipeline