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Release Notes: https://reactjs.org/blog/2018/03/29/react-v-16-3.html
Changelog: https://github.com/facebook/react/releases/tag/v16.3.0
Context API!
No more props drilling! (Passing props through various components) Thanks to createContext function on the React class.
Harry Wolff has a great overview video of it https://www.youtube.com/watch?v=9Ilq6G-VMyQ
Elijah Manor also has a great overview video https://www.youtube.com/watch?v=WhWqy-vxKS8
Yes, it is a new Context API, but if you use the old Context API, all will be good until React 17
StrictMode
Orders you to follow best practices, it basically will give you some warnings in the console.
Wrap your components in and you are ready to go.
AsyncMode
Any child components of the tag will now make those childrens updates asynchronous, treating them as low priority updates.
Check out https://build-mbfootjxoo.now.sh/ for a working interactive example
Life Cycle Methods Are Changing
componentWillMount, componentWillUpdate, componentWillReceiveProps will be deprecated and prepended with UNSAFE_
All Will methods will be deprecated, except for componentWillUnmount
Why? Confusion in use cases, performance and to make way for the upcoming Async Mode!
Where to?
componentWillMount goes to componentDidMount
componentWillUpdate goes to componentDidUpdate
componentWillReceiveProps goes to getDerivedStateFromProps (new and shiny method which is a static function)
React.forwardRef
forwardRef function from the React Class, takes props and ref parameters.
String refs will be deprecated, due to perf issues and others
New React Developer Tools Released
Now that there is some new stuff to work with, React Developer Tools has been updated to assist with debugging these new components.
Software
Dropbox (backup and sync software) - https://db.tt/l33vnUkr6L
Dashlane (password storage) - https://www.dashlane.com/en/cs/_FHtTXN3Rkdg
Podcast Gear
Blue Yeti USB Microphone (Silver) - http://amzn.to/2BjKEh9
Blue Yeti USB Microphone (Blackout Edition) - http://amzn.to/2By4byE
Premium 6-inch Pop Filter For Blue Yeti Microphone by Auphonix - http://amzn.to/2DtK2aq
Video Gear
Canon PowerShot G7 X Mark II Digital Camera w/ 1 Inch Sensor and tilt LCD screen - Wi-Fi & NFC Enabled (Black) - http://amzn.to/2Bwd0ZK
Rode smartLav+ Lavalier Microphone for iPhone and Smartphones - http://amzn.to/2Dtt38f
JOBY GorillaPod 3K Kit. Compact Tripod 3K Stand and Ballhead 3K for Compact Mirrorless Cameras or devices up to 3K (6.6lbs). Black/Charcoal. - http://amzn.to/2BOh44L
Computer Gear
Logitech G502 Proteus Core Tunable Gaming Mouse - http://amzn.to/2BYuH3O
Anker PowerCore 10000, One of the Smallest and Lightest 10000mAh External Batteries - http://amzn.to/2CVMohk
Seagate Backup Plus Slim 2TB Portable External Hard Drive - http://amzn.to/2Dr98GL
Recommended Gear
STM Impulse, Backpack for 15-Inch Laptop and Tablet - Black (stm-111-024P-01) - http://amzn.to/2CUxRm3
Bose QuietComfort 35 (Series I) Wireless Headphones, Noise Cancelling - Black (updated and wireless version) - http://amzn.to/2BN3yy0
Other Gear
Kogan - https://www.kogan.com/au/r/TX4FTG/
