Same like React, Vue, Angular:

  • For building UIs
  • Web based: HTML, CSS, JS
  • Component oriented
  • Declarative
  • Typescript support

Different because:

  • Runtime Compiler
  • Virtual DOM
  • Native Javascript modules
  • Even "lightweighter" than React or Vue
  • CSS scoping
  • Cypress by default
  • Weight of applications
  • Poor performances / bad time to interactive
  • Lack of interoperability

 

  • React: Translates declarative virtual DOM components to imperative DOM during runtime
  • Comparing virtual DOM with DOM all the time
  • All sometimes slow and needs a re-render cycle

 

Interesting: svelte.dev/blog/virtual-dom-is-pure-overhead

the virtual dom thing

 

  • compiles your code during build time towards the browser's imperative DOM API and
  • changes declarative components to imperative components
  • generates standard browser-optimized JavaScript
  • can generate web components from same code (testsuite)

 

The build process

  • checks A11y issues
  • eliminates dead code 
  • generates source maps

 

Deep dive into compiler internals

the svelte compiler

Talk is cheap. Show me the code."

Bill Gates

Linus Torvalds

LIBS

brain food

Svelte Introduction

By netzartist-de

Svelte Introduction

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