Merge branch 'master' of https://github.com/reactjs/reactjs.org into sync-c8aef5dc

Author: reactjs-translation-bot

content/community/conferences.md

@@ -22,6 +22,11 @@ February 27 & 28, 2020 in Sydney, Australia
 
 [Website](https://reactconfau.com/) - [Twitter](https://twitter.com/reactconfau) - [Facebook](https://www.facebook.com/reactconfau) - [Instagram](https://www.instagram.com/reactconfau/)
 
+### ReactConf Japan 2020 {#reactconfjp-2020}
+March 21, 2020 in Tokyo, Japan
+
+[Website](https://reactconf.jp/) - [Twitter](https://twitter.com/reactjapanconf)
+
 ### Reactathon 2020 {#reactathon-2020}
 March 30 - 31, 2020 in San Francisco, CA
 
@@ -40,7 +45,7 @@ April 23 - 24, 2020 in Kraków, Poland
 ### React Day Bangalore 2020 {#react-day-bangalore-2020}
 April 25, 2020 in Bangalore, India
 
-[Website](https://reactday.in) - [Twitter](https://twitter.com/ReactDayIn)
+[Website](https://reactday.in) - [Twitter](https://twitter.com/ReactDayIn) - [LinkedIn](https://www.linkedin.com/company/react-day/)
 
 ### render(ATL) 2020 {#render-atlanta-2020}
 May 4-6, 2020. Atlanta, GA, USA.
@@ -72,6 +77,11 @@ July 17, 2020. New York City, USA.
 
 [Website](https://reactweek.nyc/) - [Twitter](https://twitter.com/reactweek) - [Facebook](https://www.facebook.com/reactweek)
 
+### React La Conferencia 2020 {#react-la-conferencia-2020}
+July 18, 2020. Medellín, Colombia.
+
+[Website](https://reactlaconf.co/) - [Twitter](https://twitter.com/reactlaconf)
+
 ### ComponentsConf 2020 {#components20}
 September 1, 2020 in Melbourne, Australia
 

content/community/meetups.md

@@ -95,6 +95,7 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet
 * [Tel Aviv](https://www.meetup.com/ReactJS-Israel/)
 
 ## Malaysia {#malaysia}
+* [Kuala Lumpur](https://www.kl-react.com/)
 * [Penang](https://www.facebook.com/groups/reactpenang/)
 
 ## Netherlands {#netherlands}

content/docs/concurrent-mode-patterns.md

@@ -790,7 +790,7 @@ function ProfileTimeline({ isStale, resource }) {
 
 The tradeoff we're making here is that `<ProfileTimeline>` will be inconsistent with other components and potentially show an older item. Click "Next" a few times, and you'll notice it. But thanks to that, we were able to cut down the transition time from 1000ms to 300ms.
 
-Whether or not it's an appropriate tradeoff depends on the situation. But it's a handy tool, especially when the content doesn't change very visible between items, and the user might not even realize they were looking at a stale version for a second.
+Whether or not it's an appropriate tradeoff depends on the situation. But it's a handy tool, especially when the content doesn't change noticeably between items, and the user might not even realize they were looking at a stale version for a second.
 
 It's worth noting that `useDeferredValue` is not *only* useful for data fetching. It also helps when an expensive component tree causes an interaction (e.g. typing in an input) to be sluggish. Just like we can "defer" a value that takes too long to fetch (and show its old value despite others components updating), we can do this with trees that take too long to render.
 

content/docs/hooks-reference.md

@@ -143,7 +143,7 @@ Although `useEffect` is deferred until after the browser has painted, it's guara
 
 The default behavior for effects is to fire the effect after every completed render. That way an effect is always recreated if one of its dependencies changes.
 
-However, this may be overkill in some cases, like the subscription example from the previous section. We don't need to create a new subscription on every update, only if the `source` props has changed.
+However, this may be overkill in some cases, like the subscription example from the previous section. We don't need to create a new subscription on every update, only if the `source` prop has changed.
 
 To implement this, pass a second argument to `useEffect` that is the array of values that the effect depends on. Our updated example now looks like this:
 

content/docs/static-type-checking.md

@@ -175,7 +175,7 @@ Create React App supports TypeScript out of the box.
 To create a **new project** with TypeScript support, run:
 
 ```bash
-npx create-react-app my-app --typescript
+npx create-react-app my-app --template typescript
 ```
 
 You can also add it to an **existing Create React App project**, [as documented here](https://facebook.github.io/create-react-app/docs/adding-typescript).

content/docs/strict-mode.md

@@ -87,9 +87,9 @@ The commit phase is usually very fast, but rendering can be slow. For this reaso
 
 Render phase lifecycles include the following class component methods:
 * `constructor`
-* `componentWillMount`
-* `componentWillReceiveProps`
-* `componentWillUpdate`
+* `componentWillMount` (or `UNSAFE_componentWillMount`)
+* `componentWillReceiveProps` (or `UNSAFE_componentWillReceiveProps`)
+* `componentWillUpdate` (or `UNSAFE_componentWillUpdate`)
 * `getDerivedStateFromProps`
 * `shouldComponentUpdate`
 * `render`