EuiErrorBoundary: converted to Typescript

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 - Added `nested` glyph to `EuiIcon` ([#2707](https://github.com/elastic/eui/pull/2707))
 - Added `tableLayout` prop to `EuiTable`, `EuiBasicTable` and `EuiInMemoryTable` to provide the option of auto layout ([#2697](https://github.com/elastic/eui/pull/2697))
+- Converted `EuiErrorBoundary` to Typescript  ([#2690](https://github.com/elastic/eui/pull/2690))
 
 **Bug fixes**
 

src/components/error_boundary/error_boundary.js → src/components/error_boundary/error_boundary.tsx

@@ -1,23 +1,37 @@
-import React, { Component } from 'react';
+import React, { Component, HTMLAttributes } from 'react';
+import { CommonProps } from '../common';
 import PropTypes from 'prop-types';
 
 import { EuiText } from '../text';
 
-export class EuiErrorBoundary extends Component {
+interface EuiErrorBoundaryState {
+  hasError: boolean;
+  error?: Error;
+}
+
+export type EuiErrorBoundaryProps = CommonProps &
+  HTMLAttributes<HTMLDivElement>;
+
+export class EuiErrorBoundary extends Component<
+  EuiErrorBoundaryProps,
+  EuiErrorBoundaryState
+> {
   static propTypes = {
     children: PropTypes.node,
   };
 
-  constructor(props) {
+  constructor(props: EuiErrorBoundaryProps) {
     super(props);
 
-    this.state = {
+    const errorState: EuiErrorBoundaryState = {
       hasError: false,
       error: undefined,
     };
+
+    this.state = errorState;
   }
 
-  componentDidCatch(error) {
+  componentDidCatch(error: Error) {
     // Display fallback UI
     this.setState({
       hasError: true,

src/components/error_boundary/index.ts

@@ -0,0 +1 @@
+export { EuiErrorBoundary, EuiErrorBoundaryProps } from './error_boundary';

src/components/index.d.ts

@@ -1,7 +1,6 @@
 /// <reference path="./code/index.d.ts" />
 /// <reference path="./combo_box/index.d.ts" />
 /// <reference path="./date_picker/index.d.ts" />
-/// <reference path="./error_boundary/index.d.ts" />
 /// <reference path="./filter_group/index.d.ts" />
 /// <reference path="./form/index.d.ts" />
 /// <reference path="./modal/index.d.ts" />