Merge pull request #19 from reactjs/sync-647b6392

Sync with reactjs.org @ 647b639

Author: balazsorban44

CODE_OF_CONDUCT.md

@@ -1,5 +1,76 @@
 # Code of Conduct
 
-Facebook has adopted a Code of Conduct that we expect project participants to adhere to.
-Please read the [full text](https://code.fb.com/codeofconduct/)
-so that you can understand what actions will and will not be tolerated.
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to make participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, and it also applies when
+an individual is representing the project or its community in public spaces.
+Examples of representing a project or community include using an official
+project e-mail address, posting via an official social media account, or acting
+as an appointed representative at an online or offline event. Representation of
+a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at <[email protected]>. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

content/blog/2015-09-02-new-react-developer-tools.md

@@ -20,7 +20,7 @@ It contains a handful of new features, including:
 
 ## Installation {#installation}
 
-Download the new devtools from the [Chrome Web Store](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi) and on [Mozilla Add-ons](https://addons.mozilla.org/en-US/firefox/addon/react-devtools/) for Firefox. If you're developing using React, we highly recommend installing these devtools.
+Download the new devtools from the [Chrome Web Store](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi) and on [Firefox Add-ons](https://addons.mozilla.org/en-US/firefox/addon/react-devtools/) for Firefox. If you're developing using React, we highly recommend installing these devtools.
 
 If you already have the Chrome extension installed, it should autoupdate within the next week. You can also head to `chrome://extensions` and click "Update extensions now" if you'd like to get the new version today. If you installed the devtools beta, please remove it and switch back to the version from the store to make sure you always get the latest updates and bug fixes.
 

content/blog/2017-07-26-error-handling-in-react-16.md

@@ -111,4 +111,4 @@ Error boundaries preserve the declarative nature of React, and behave as you wou
 
 React 15 included a very limited support for error boundaries under a different method name: `unstable_handleError`. This method no longer works, and you will need to change it to `componentDidCatch` in your code starting from the first 16 beta release.
 
-For this change, we’ve provided [a codemod](https://github.com/reactjs/react-codemod#error-boundaries) to automatically migrate your code.
+For this change, we’ve provided a [codemod](https://github.com/reactjs/react-codemod#error-boundaries) to automatically migrate your code.

content/blog/2019-08-15-new-react-devtools.md

@@ -0,0 +1,79 @@
+---
+title: "Introducing the New React DevTools"
+author: [bvaughn]
+---
+We are excited to announce a new release of the React Developer Tools, available today in Chrome, Firefox, and (Chromium) Edge!
+
+## What's changed?
+
+A lot has changed in version 4!
+At a high level, this new version should offer significant performance gains and an improved navigation experience.
+It also offers full support for React Hooks, including inspecting nested objects.
+
+![DevTools version 4 screenshot](../images/blog/devtools-v4-screenshot.png)
+
+[Visit the interactive tutorial](https://react-devtools-tutorial.now.sh/) to try out the new version or [see the changelog](https://github.com/facebook/react/blob/master/packages/react-devtools/CHANGELOG.md#400-august-15-2019) for demo videos and more details.
+
+## Which versions of React are supported?
+
+**`react-dom`**
+
+* `0`-`14.x`: Not supported
+* `15.x`: Supported (except for the new component filters feature)
+* `16.x`: Supported
+
+**`react-native`**
+* `0`-`0.61`: Not supported
+* `0.62`: Will be supported (when 0.62 is released)
+
+## How do I get the new DevTools?
+
+React DevTools is available as an extension for [Chrome](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi?hl=en) and [Firefox](https://addons.mozilla.org/en-US/firefox/addon/react-devtools/).
+If you have already installed the extension, it should update automatically within the next couple of hours.
+
+If you use the standalone shell (e.g. in React Native or Safari), you can install the new version [from NPM](https://www.npmjs.com/package/react-devtools):
+
+```shell
+npm install -g react-devtools@^4
+```
+
+## Where did all of the DOM elements go?
+
+The new DevTools provides a way to filter components from the tree to make it easier to navigate deeply nested hierarchies.
+Host nodes (e.g. HTML `<div>`, React Native `<View>`) are *hidden by default*, but this filter can be disabled:
+
+![DevTools component filters](../images/blog/devtools-component-filters.gif)
+
+## How do I get the old version back?
+
+If you are working with React Native version 60 (or older) you can install the previous release of DevTools from NPM:
+
+```shell
+npm install --dev react-devtools@^3
+```
+
+For older versions of React DOM (v0.14 or earlier) you will need to build the extension from source:
+
+```shell
+# Checkout the extension source
+git clone https://github.com/facebook/react-devtools
+
+cd react-devtools
+
+# Checkout the previous release branch
+git checkout v3
+
+# Install dependencies and build the unpacked extension
+yarn install
+yarn build:extension
+
+# Follow the on-screen instructions to complete installation
+```
+
+## Thank you!
+
+We'd like to thank everyone who tested the early release of DevTools version 4.
+Your feedback helped improve this initial release significantly.
+
+We still have many exciting features planned and feedback is always welcome!
+Please feel free to open a [GitHub issue](https://github.com/facebook/react/issues/new?labels=Component:%20Developer%20Tools) or tag [@reactjs on Twitter](https://twitter.com/reactjs).

content/community/articles.md

@@ -13,4 +13,5 @@ permalink: community/articles.html
 - [Timeline for Learning React](https://daveceddia.com/timeline-for-learning-react/) - Dave Ceddia's recommended timeline for learning React and the React ecosystem.
 - [Simple React Development in 2017](https://hackernoon.com/simple-react-development-in-2017-113bd563691f) - Joshua Comeau's guide to showcase how easy it can be to start modern React development.
 - [Visual Guide to State in React](https://daveceddia.com/visual-guide-to-state-in-react/) - Dave Ceddia's visual guide to React state.
-- [The Hands-On Guide to Learning React Hooks](https://www.telerik.com/kendo-react-ui/react-hooks-guide/)
+- [The Hands-On Guide to Learning React Hooks](https://www.telerik.com/kendo-react-ui/react-hooks-guide/) - Eric Bishard's step-by-step guide to learning React Hooks.
+- [How to Use the React Profiler Component to Measure Render Performance](https://medium.com/@adamhenson/how-to-use-the-react-profiler-component-to-measure-performance-improvements-from-hooks-d43b7092d7a8) - Adam Henson's article exemplifying a use case for `<React.Profiler />`.

content/community/conferences.md

@@ -12,36 +12,6 @@ Do you know of a local React.js conference? Add it here! (Please keep the list c
 
 ## Upcoming Conferences {#upcoming-conferences}
 
-### React Conf Iran 2019 {#react-conf-iran-2019}
-August 29, 2019. Tehran, Iran.
-
-[Website](https://reactconf.ir/) - [Twitter](https://twitter.com/reactconf_ir) - [Instagram](https://www.instagram.com/reactconf/)
-
-### React Rally 2019 {#react-rally-2019}
-August 22-23, 2019. Salt Lake City, USA.
-
-[Website](https://www.reactrally.com/) - [Twitter](https://twitter.com/ReactRally) - [Instagram](https://www.instagram.com/reactrally/)
-
-### ComponentsConf 2019 {#componentsconf-2019}
-September 6, 2019 in Melbourne, Australia
-
-[Website](https://www.componentsconf.com.au/) - [Twitter](https://twitter.com/componentsconf)
-
-### React Native EU 2019 {#react-native-eu-2019}
-September 5-6 in Wrocław, Poland
-
-[Website](https://react-native.eu) - [Twitter](https://twitter.com/react_native_eu) - [Facebook](https://www.facebook.com/reactnativeeu)
-
-### React New York 2019 {#react-new-york-2019}
-September 13th, 2019. New York, USA
-
-[Website](https://reactnewyork.com/) - [Twitter](https://twitter.com/reactnewyork)
-
-### React Live 2019 {#react-live-2019}
-September 13th, 2019. Amsterdam, The Netherlands
-
-[Website](https://www.reactlive.nl/) - [Twitter](https://twitter.com/reactlivenl)
-
 ### React Boston 2019 {#react-boston-2019}
 September 21-22, 2019 in Boston, Massachusetts USA
 
@@ -67,6 +37,11 @@ October 25, 2019 in London, UK
 
 [Website](https://reactadvanced.com) - [Twitter](http://twitter.com/reactadvanced) - [Facebook](https://www.facebook.com/ReactAdvanced) - [Videos](https://youtube.com/c/ReactConferences)
 
+### React Conf Brasil 2019 {#react-conf-2019}
+October 19, 2019 in São Paulo, BR
+
+[Website](https://reactconf.com.br/) - [Twitter](https://twitter.com/reactconfbr) - [Facebook](https://www.facebook.com/ReactAdvanced) - [Slack](https://react.now.sh/)
+
 ### React Day Berlin 2019 {#react-day-berlin-2019}
 December 6, 2019 in Berlin, Germany
 
@@ -80,10 +55,56 @@ February 27 & 28, 2020 in Sydney, Australia
 ### Render-Atlanta 2020 {#render-atlanta-2020}
 May 4-6, 2020. Atlanta, GA, USA.
 
-[Website](https://renderatl.com)
+[Website](https://renderatl.com) - [Twitter](https://twitter.com/renderATL) - [Instagram](https://www.instagram.com/renderatl/) - [Facebook](https://www.facebook.com/renderatl/) 
+
+### React Finland 2020 {#react-finland-2020}
+May 26-29 in Helsinki, Finland
+
+[Website](https://react-finland.fi/) - [Twitter](https://twitter.com/ReactFinland)
+
+### React Next 2020 {#react-next-2020}
+June 15, 2020. Tel Aviv, Israel.
+
+[Website](https://react-next.com/) - [Twitter](https://twitter.com/reactnext) - [Facebook](https://www.facebook.com/ReactNext2016/) 
+
+### React Week NY 2020 {#react-week-NY-2020}
+July 17, 2020. New York City, USA.
+
+[Website](https://reactweek.nyc/) - [Twitter](https://twitter.com/reactweek) - [Facebook](https://www.facebook.com/reactweek) 
+
 
 ## Past Conferences {#past-conferences}
 
+### React Rally 2019 {#react-rally-2019}
+August 22-23, 2019. Salt Lake City, USA.
+
+[Website](https://www.reactrally.com/) - [Twitter](https://twitter.com/ReactRally) - [Instagram](https://www.instagram.com/reactrally/)
+
+### ComponentsConf 2019 {#componentsconf-2019}
+September 6, 2019 in Melbourne, Australia
+
+[Website](https://www.componentsconf.com.au/) - [Twitter](https://twitter.com/componentsconf)
+
+### React Native EU 2019 {#react-native-eu-2019}
+September 5-6 in Wrocław, Poland
+
+[Website](https://react-native.eu) - [Twitter](https://twitter.com/react_native_eu) - [Facebook](https://www.facebook.com/reactnativeeu)
+
+### React New York 2019 {#react-new-york-2019}
+September 13th, 2019. New York, USA
+
+[Website](https://reactnewyork.com/) - [Twitter](https://twitter.com/reactnewyork)
+
+### React Live 2019 {#react-live-2019}
+September 13th, 2019. Amsterdam, The Netherlands
+
+[Website](https://www.reactlive.nl/) - [Twitter](https://twitter.com/reactlivenl)
+
+### React Conf Iran 2019 {#react-conf-iran-2019}	
+August 29, 2019. Tehran, Iran.	
+
+[Website](https://reactconf.ir/) - [Videos](https://www.youtube.com/playlist?list=PL-VNqZFI5Nf-Nsj0rD3CWXGPkH-DI_0VY) - [Highlights](https://github.com/ReactConf/react-conf-highlights)
+
 ### React.js Conf 2015 {#reactjs-conf-2015}
 January 28 & 29 in Facebook HQ, CA
 

content/community/courses.md

@@ -8,6 +8,8 @@ permalink: community/courses.html
 
 ## Free Courses {#free-courses}
 
+- [Glitch: React Starter Kit](https://glitch.com/culture/react-starter-kit/) - A free, 5-part video course with interactive code examples that will help you learn React.
+
 - [Codecademy: React 101](https://www.codecademy.com/learn/react-101) - Codecademy's introductory course for React.
 
 - [Egghead.io: Start Learning React](https://egghead.io/courses/start-learning-react) - This series will explore the basic fundamentals of React to get you started.

content/community/examples.md

@@ -21,3 +21,5 @@ There are many example projects created by the React community. Feel free to add
 * **[Bitcoin Price Index](https://github.com/mrkjlchvz/bitcoin-price-index)** Simple bitcoin price index data from CoinDesk API.
 * **[Builder Book](https://github.com/builderbook/builderbook)** Open source web app to write and host documentation or sell books. Built with React, Material-UI, Next, Express, Mongoose, MongoDB.
 * **[GFonts Space](https://github.com/pankajladhar/GFontsSpace)** A space which allows user to play with Google fonts. Built with React, Redux and React-Router.
+* **[Course Learn Page](https://github.com/ulearnpro/ulearn)** Open Source LMS script in Laravel 5.8 and ReactJS 16.9
+* **[Speedy math](https://github.com/pankajladhar/speedy-math)** An application which allows kids to practice basic Mathematics i.e  Addition, Subtraction, Multiply, Comparison. It is a PWA (Progressive web app) with offline support and install as App features.

content/community/meetups.md

@@ -25,6 +25,7 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet
 * [Joinville](https://www.meetup.com/pt-BR/React-Joinville/)
 * [Rio de Janeiro](https://www.meetup.com/pt-BR/React-Rio-de-Janeiro/)
 * [São Paulo](https://www.meetup.com/pt-BR/ReactJS-SP/)
+* [Vila Velha](https://www.meetup.com/pt-BR/React-ES/)
 
 ## Bolivia {#bolivia}
 * [Bolivia](https://www.meetup.com/ReactBolivia/)
@@ -58,7 +59,7 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet
 * [Karlsruhe](https://www.meetup.com/react_ka/)
 * [Kiel](https://www.meetup.com/Kiel-React-Native-Meetup/)
 * [Munich](https://www.meetup.com/ReactJS-Meetup-Munich/)
-* [React Berlin](https://www.meetup.com/React-Berlin/)
+* [React Berlin](https://www.meetup.com/React-Open-Source/)
 * [React.JS Girls Berlin](https://www.meetup.com/ReactJS-Girls-Berlin/)
 
 ## Greece {#greece}
@@ -69,6 +70,7 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet
 
 ## India {#india}
 * [Bangalore](https://www.meetup.com/ReactJS-Bangalore/)
+* [Chandigarh](https://www.meetup.com/Chandigarh-React-Developers/)
 * [Chennai](https://www.meetup.com/React-Chennai/)
 * [Delhi NCR](https://www.meetup.com/React-Delhi-NCR/)
 * [Jaipur](https://www.meetup.com/JaipurJS-Developer-Meetup/)
@@ -79,6 +81,9 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet
 ## Israel {#israel}
 * [Tel Aviv](https://www.meetup.com/ReactJS-Israel/)
 
+## Malaysia {#malaysia}
+* [Penang](https://www.facebook.com/groups/reactpenang/)
+
 ## Netherlands {#netherlands}
 * [Amsterdam](https://www.meetup.com/React-Amsterdam/)
 
@@ -140,6 +145,7 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet
 * [New York, NY - ReactJS](https://www.meetup.com/NYC-Javascript-React-Group/)
 * [New York, NY - React Ladies](https://www.meetup.com/React-Ladies/)
 * [New York, NY - React Native](https://www.meetup.com/React-Native-NYC/)
+* [New York, NY - useReactNYC](https://www.meetup.com/useReactNYC/)
 * [Palo Alto, CA - React Native](https://www.meetup.com/React-Native-Silicon-Valley/)
 * [Philadelphia, PA - ReactJS](https://www.meetup.com/RQ-React/)
 * [Phoenix, AZ - ReactJS](https://www.meetup.com/ReactJS-Phoenix/)

content/community/support.md

@@ -12,6 +12,8 @@ React has a community of millions of developers.
 
 On this page we've listed some React-related communities that you can be a part of; see the other pages in this section for additional online and in-person learning materials.
 
+Before participating in React's communities, [please read our Code of Conduct](https://github.com/facebook/react/blob/master/CODE_OF_CONDUCT.md). We have adopted the [Contributor Covenant](https://www.contributor-covenant.org/) and we expect that all community members adhere to the guidelines within.
+
 ## Stack Overflow {#stack-overflow}
 
 Stack Overflow is a popular forum to ask code-level questions or if you're stuck with a specific error. Read through the [existing questions](https://stackoverflow.com/questions/tagged/reactjs) tagged with **reactjs** or [ask your own](https://stackoverflow.com/questions/ask?tags=reactjs)!
@@ -24,7 +26,7 @@ Each community consists of many thousands of React users.
 
 * [DEV's React community](https://dev.to/t/react)
 * [Hashnode's React community](https://hashnode.com/n/reactjs)
-* [Reactiflux online chat](https://discord.gg/0ZcbPKXt5bZjGY5n)
+* [Reactiflux online chat](https://discord.gg/reactiflux)
 * [Reddit's React community](https://www.reddit.com/r/reactjs/)
 * [Spectrum's React community](https://spectrum.chat/react)