WIP: React `defaultProps` and `propTypes` for HTML elements

Introduction

Let's get started

Conclusion

Get feedback and iterate

There’s no replacement for practice

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TODO

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https://reactjs.org/docs/react-component.html#defaultprops
https://reactjs.org/docs/typechecking-with-proptypes.html

• WTF is happening?
• tl;dr;
• how internal createElement works
• why react is so light in comparison to react-dom
• about jsx https://jasonformat.com/wtf-is-jsx/
• about jsx pragma
• about babel jsx pragma
• extract to another file pragma
• typescript
• about intrinsicElements
• templating language
• why? mjml
• embed code example