reactjs · taehwanno · Sep 17, 2019 · Sep 9, 2019 · Sep 10, 2019 · Sep 10, 2019
diff --git a/content/community/articles.md b/content/community/articles.md
@@ -14,3 +14,4 @@ permalink: community/articles.html
 - [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/) - 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 />`.
diff --git a/content/community/conferences.md b/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
 
@@ -92,9 +62,44 @@ 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
 

diff --git a/content/community/tools-ui-components.md b/content/community/tools-ui-components.md
@@ -60,6 +60,7 @@ permalink: community/ui-components.html
 * **[react-uwp](https://www.react-uwp.com)** A set of React Components that Implement Microsoft's UWP Design & Fluent Design..
 * **[react-validate-framework](https://github.com/MinJieLiu/react-validate-framework)**: A lightweight and extensible React validation component.
 * **[reactstrap](https://reactstrap.github.io/):** Simple Bootstrap 4 components built with [tether](http://tether.io/)
+* **[Reakit](https://reakit.io/):** Toolkit for building accessible rich web apps with React.
 * **[recharts](https://github.com/recharts/recharts)**: A composable charting library built on React components.
 * **[Selectivity](https://arendjr.github.io/selectivity/):** Modular and light-weight selection library.
 * **[Semantic-ui](https://react.semantic-ui.com/)**: The official Semantic-UI-React integration, Advanced components and declarative UI.

diff --git a/content/docs/code-splitting.md b/content/docs/code-splitting.md
@@ -104,37 +104,18 @@ Create React App을 사용하고 있다면 이미 Webpack이 구성이 되어
 
 ```js
 import OtherComponent from './OtherComponent';
-
-function MyComponent() {
-  return (
-    <div>
-      <OtherComponent />
-    </div>
-  );
-}
 ```
 
 **After**
 
 ```js
 const OtherComponent = React.lazy(() => import('./OtherComponent'));
-
-function MyComponent() {
-  return (
-    <div>
-      <OtherComponent />
-    </div>
-  );
-}
 ```
-`MyComponent`가 렌더링 될 때 `OtherComponent`를 포함한 번들을 자동으로 불러옵니다.
-
-`React.lazy`는 동적 `import()`를 호출하는 함수를 인자로 가집니다. 이 함수는 React 컴포넌트를 
-포함하며 `default` export를 가진 모듈로 결정되는 `Promise`로 반환해야 합니다.  
+`MyComponent`가 처음 렌더링 될 때 `OtherComponent`를 포함한 번들을 자동으로 불러옵니다.
 
-### Suspense {#suspense}
+`React.lazy`는 동적 `import()`를 호출하는 함수를 인자로 가집니다. 이 함수는 React 컴포넌트를 포함하며 `default` export를 가진 모듈로 결정되는 `Promise`로 반환해야 합니다.
 
-`MyComponent`를 렌더링할 때 `OtherComponent`를 포함하는 모듈이 아직 로드되지 않았다면, 로드를 기다리는 동안 로딩처럼 예비 컨텐츠를 보여줘야 합니다. 이는 `Suspense` 컴포넌트를 사용하여 처리할 수 있습니다. 
+lazy 컴포넌트는 `Suspense` 컴포넌트 하위에서 렌더링되어야 하며, `Suspense`는 lazy 컴포넌트가 로드되길 기다리는 동안 로딩 화면과 같은 예비 컨텐츠를 보여줄 수 있게 해줍니다.
 
 ```js
 const OtherComponent = React.lazy(() => import('./OtherComponent'));

diff --git a/content/docs/hooks-faq.md b/content/docs/hooks-faq.md
@@ -655,7 +655,7 @@ function ProductPage({ productId }) {
   return <ProductDetails fetchProduct={fetchProduct} />;
 }
 
-function ProductDetails({ fetchProduct })
+function ProductDetails({ fetchProduct }) {
   useEffect(() => {
     fetchProduct();
   }, [fetchProduct]); // ✅ All useEffect dependencies are specified

diff --git a/content/docs/static-type-checking.md b/content/docs/static-type-checking.md
@@ -2,8 +2,6 @@
 id: static-type-checking
 title: Static Type Checking
 permalink: docs/static-type-checking.html
-prev: typechecking-with-proptypes.html
-next: refs-and-the-dom.html
 ---
 
 [Flow](https://flow.org/), [TypeScript](https://www.typescriptlang.org/)와 같은 정적 타입 체커들은 코드 실행 전에 특정한 타입 문제를 찾아냅니다. 또한 자동완성과 같은 기능을 추가하여 개발자의 작업 흐름을 개선하기도 합니다. 이러한 이유로 큰 코드 베이스에서는 `PropTypes`를 사용하는 대신 Flow 혹은 TypeScript를 사용하는 것을 추천해 드립니다.

diff --git a/content/docs/testing-recipes.md b/content/docs/testing-recipes.md
@@ -543,7 +543,7 @@ You can use fake timers only in some tests. Above, we enabled them by calling `j
 
 ### Snapshot Testing {#snapshot-testing}
 
-Frameworks like Jest also let you save "snapshots" of data with [`toMatchSnapshot` / `toMatchInlineSnapshot`](https://jestjs.io/docs/en/snapshot-testing). With these, we can "save" the renderered component output and ensure that a change to it has to be explicitly committed as a change to the snapshot.
+Frameworks like Jest also let you save "snapshots" of data with [`toMatchSnapshot` / `toMatchInlineSnapshot`](https://jestjs.io/docs/en/snapshot-testing). With these, we can "save" the rendered component output and ensure that a change to it has to be explicitly committed as a change to the snapshot.
 
 In this example, we render a component and format the rendered HTML with the [`pretty`](https://www.npmjs.com/package/pretty) package, before saving it as an inline snapshot:
 

diff --git a/content/docs/web-components.md b/content/docs/web-components.md
@@ -58,4 +58,4 @@ customElements.define('x-search', XSearch);
 >주의
 >
 >Babel로 클래스를 변환하면 이 코드가 작동하지 **않을 것**입니다. [해당 문제](https://github.com/w3c/webcomponents/issues/587)를 참조해주시기 바랍니다.
->이 문제를 해결하려면 웹 컴포넌트를 불러오기 전에 [custom-elements-es5-adapter](https://github.com/webcomponents/webcomponentsjs#custom-elements-es5-adapterjs)를 추가하기 바랍니다.
+>이 문제를 해결하려면 웹 컴포넌트를 불러오기 전에 [custom-elements-es5-adapter](https://github.com/webcomponents/polyfills/tree/master/packages/webcomponentsjs#custom-elements-es5-adapterjs)를 추가하기 바랍니다.