React Concurrent Mode and Suspense (Nov19) Experimental

• Glossary + ELI5

• Introducing React 18

• Building Great User Experiences with Concurrent Mode and Suspense

• Introducing Concurrent Mode (Experimental)
• Suspense for Data Fetching (Experimental)
• Concurrent UI Patterns (Experimental)
• Adopting Concurrent Mode (Experimental)
• Concurrent Mode API Reference (Experimental)

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React Lifecycle Methods diagram

Classes -> Fn Components

• OO -> Fn (state: mutable -> immutable)
• lifecycle methods -> hooks

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Progressive Hydration