diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75aab6db4a4..e4076eda326 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@
 **Breaking changes**
 
 - Removed `size` prop from `EuiResizableButton` ([#3978](https://github.com/elastic/eui/pull/3978))
+- Upgraded to TypeScript v4.0 ([#4296](https://github.com/elastic/eui/pull/4296))
 
 ## [`30.6.0`](https://github.com/elastic/eui/tree/v30.6.0)
 
diff --git a/package.json b/package.json
index 857684a4f6c..3cea9927014 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,7 @@
     "@babel/plugin-transform-runtime": "^7.11.0",
     "@babel/preset-env": "^7.11.0",
     "@babel/preset-react": "^7.10.4",
-    "@babel/preset-typescript": "^7.10.4",
+    "@babel/preset-typescript": "^7.12.1",
     "@elastic/charts": "^20.0.0",
     "@elastic/datemath": "^5.0.3",
     "@elastic/eslint-config-kibana": "^0.15.0",
@@ -111,8 +111,8 @@
     "@types/tabbable": "^3.1.0",
     "@types/url-parse": "^1.4.3",
     "@types/uuid": "^8.3.0",
-    "@typescript-eslint/eslint-plugin": "^3.10.1",
-    "@typescript-eslint/parser": "^3.10.1",
+    "@typescript-eslint/eslint-plugin": "^4.8.1",
+    "@typescript-eslint/parser": "^4.8.1",
     "argparse": "^2.0.1",
     "autoprefixer": "^9.8.6",
     "axe-core": "^4.0.1",
@@ -182,7 +182,7 @@
     "puppeteer": "^5.3.0",
     "raw-loader": "^4.0.1",
     "react": "^16.12.0",
-    "react-docgen-typescript": "^1.20.3",
+    "react-docgen-typescript": "^1.20.5",
     "react-dom": "^16.12.0",
     "react-redux": "^7.2.1",
     "react-router": "^5.2.0",
@@ -203,7 +203,7 @@
     "start-server-and-test": "^1.11.3",
     "style-loader": "^1.2.1",
     "terser-webpack-plugin": "^4.1.0",
-    "typescript": "3.7.2",
+    "typescript": "4.0.5",
     "uglifyjs-webpack-plugin": "^2.2.0",
     "url-loader": "^4.1.0",
     "webpack": "^4.44.1",
@@ -220,6 +220,6 @@
     "prop-types": "^15.5.0",
     "react": "^16.12",
     "react-dom": "^16.12",
-    "typescript": "^3.7.2"
+    "typescript": "^4.0.5"
   }
 }
diff --git a/src/components/basic_table/action_types.ts b/src/components/basic_table/action_types.ts
index d42fb5829d9..28f63a8c99b 100644
--- a/src/components/basic_table/action_types.ts
+++ b/src/components/basic_table/action_types.ts
@@ -98,3 +98,9 @@ export interface CustomItemAction<T> {
 }
 
 export type Action<T> = DefaultItemAction<T> | CustomItemAction<T>;
+
+export const isCustomItemAction = (
+  action: DefaultItemAction<any> | CustomItemAction<any>
+): action is CustomItemAction<any> => {
+  return action.hasOwnProperty('render');
+};
diff --git a/src/components/basic_table/expanded_item_actions.tsx b/src/components/basic_table/expanded_item_actions.tsx
index 2c174ee7fc2..5184c84f5ae 100644
--- a/src/components/basic_table/expanded_item_actions.tsx
+++ b/src/components/basic_table/expanded_item_actions.tsx
@@ -25,6 +25,7 @@ import {
   Action,
   CustomItemAction as CustomAction,
   DefaultItemAction as DefaultAction,
+  isCustomItemAction,
 } from './action_types';
 import { ItemIdResolved } from './table_types';
 
@@ -61,7 +62,7 @@ export const ExpandedItemActions = <T extends {}>({
           expandedItemActions__completelyHide: moreThanThree && index < 2,
         });
 
-        if ((action as CustomAction<T>).render) {
+        if (isCustomItemAction(action)) {
           // custom action has a render function
           tools.push(
             <CustomItemAction
diff --git a/src/components/color_picker/color_stops/color_stop_thumb.tsx b/src/components/color_picker/color_stops/color_stop_thumb.tsx
index af777855938..771fd9130b9 100644
--- a/src/components/color_picker/color_stops/color_stop_thumb.tsx
+++ b/src/components/color_picker/color_stops/color_stop_thumb.tsx
@@ -114,7 +114,9 @@ export const EuiColorStopThumb: FunctionComponent<EuiColorStopThumbProps> = ({
     isColorInvalid(color, colorPickerShowAlpha)
   );
   const [stopIsInvalid, setStopIsInvalid] = useState(isStopInvalid(stop));
-  const [numberInputRef, setNumberInputRef] = useState();
+  const [numberInputRef, setNumberInputRef] = useState<HTMLInputElement | null>(
+    null
+  );
   const popoverRef = useRef<EuiPopover>(null);
 
   useEffect(() => {
@@ -262,7 +264,7 @@ export const EuiColorStopThumb: FunctionComponent<EuiColorStopThumbProps> = ({
       isOpen={isPopoverOpen}
       closePopover={closePopover}
       ownFocus={isPopoverOpen}
-      initialFocus={numberInputRef}
+      initialFocus={numberInputRef || undefined}
       panelClassName={
         numberInputRef ? undefined : 'euiColorStopPopover-isLoadingPanel'
       }
diff --git a/src/components/control_bar/control_bar.tsx b/src/components/control_bar/control_bar.tsx
index 4db7960696a..d1602487bc0 100644
--- a/src/components/control_bar/control_bar.tsx
+++ b/src/components/control_bar/control_bar.tsx
@@ -347,11 +347,11 @@ export class EuiControlBar extends Component<
             <EuiButtonIcon
               key={id + index}
               className={classNames('euiControlBar__buttonIcon', className)}
-              iconType={iconType}
               onClick={onClick}
               href={href}
               color={color as EuiButtonIconProps['color']}
               {...(rest as IconButtonControlType)}
+              iconType={iconType}
               size="s"
             />
           ) : (
diff --git a/src/components/form/checkbox/checkbox_group.test.tsx b/src/components/form/checkbox/checkbox_group.test.tsx
index fbd1c1fc2b0..c0939767be4 100644
--- a/src/components/form/checkbox/checkbox_group.test.tsx
+++ b/src/components/form/checkbox/checkbox_group.test.tsx
@@ -34,11 +34,7 @@ const checkboxGroupRequiredProps = {
 describe('EuiCheckboxGroup (mocked checkbox)', () => {
   test('is rendered', () => {
     const component = render(
-      <EuiCheckboxGroup
-        onChange={() => {}}
-        {...checkboxGroupRequiredProps}
-        {...requiredProps}
-      />
+      <EuiCheckboxGroup {...checkboxGroupRequiredProps} {...requiredProps} />
     );
 
     expect(component).toMatchSnapshot();
diff --git a/src/components/markdown_editor/markdown_editor.tsx b/src/components/markdown_editor/markdown_editor.tsx
index eb1dad4bb89..6b280bafb7a 100644
--- a/src/components/markdown_editor/markdown_editor.tsx
+++ b/src/components/markdown_editor/markdown_editor.tsx
@@ -229,7 +229,7 @@ export const EuiMarkdownEditor = forwardRef<
       [replaceNode]
     );
 
-    const [selectedNode, setSelectedNode] = useState();
+    const [selectedNode, setSelectedNode] = useState<EuiMarkdownAstNode>();
 
     const textareaRef = useRef<HTMLTextAreaElement>(null);
 
diff --git a/src/components/markdown_editor/plugins/markdown_default_plugins.tsx b/src/components/markdown_editor/plugins/markdown_default_plugins.tsx
index 68e7804b3fd..cda761e174f 100644
--- a/src/components/markdown_editor/plugins/markdown_default_plugins.tsx
+++ b/src/components/markdown_editor/plugins/markdown_default_plugins.tsx
@@ -17,7 +17,23 @@
  * under the License.
  */
 
-import { PluggableList, Plugin } from 'unified';
+// Importing seemingly unused types from `unified` because the definitions
+// are exported for two versions of TypeScript (3.4, 4.0) and implicit
+// imports during eui.d.ts generation default to the incorrect version (3.4).
+// Explicit imports here resolve the version mismatch.
+import {
+  Plugin,
+  PluggableList,
+  // @ts-ignore See above comment
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  Attacher,
+  // @ts-ignore See above comment
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  Pluggable,
+  // @ts-ignore See above comment
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  Settings,
+} from 'unified';
 import remark2rehype from 'remark-rehype';
 import rehype2react from 'rehype-react';
 import * as MarkdownTooltip from './markdown_tooltip';
diff --git a/src/components/observer/resize_observer/resize_observer.test.tsx b/src/components/observer/resize_observer/resize_observer.test.tsx
index 71886ed1a6b..067518e05f9 100644
--- a/src/components/observer/resize_observer/resize_observer.test.tsx
+++ b/src/components/observer/resize_observer/resize_observer.test.tsx
@@ -89,7 +89,7 @@ describe('testResizeObservers', () => {
       expect.assertions(2);
 
       const Wrapper: FunctionComponent<{}> = jest.fn(({ children }) => {
-        const [ref, setRef] = useState();
+        const [ref, setRef] = useState<Element | null>(null);
         useResizeObserver(ref);
         return <div ref={setRef}>{children}</div>;
       });
diff --git a/src/components/popover/input_popover.tsx b/src/components/popover/input_popover.tsx
index 5a8a83c0285..55c83c70e5d 100644
--- a/src/components/popover/input_popover.tsx
+++ b/src/components/popover/input_popover.tsx
@@ -55,9 +55,9 @@ export const EuiInputPopover: FunctionComponent<Props> = ({
   onPanelResize,
   ...props
 }) => {
-  const [inputEl, setInputEl] = useState();
-  const [inputElWidth, setInputElWidth] = useState();
-  const [panelEl, setPanelEl] = useState();
+  const [inputEl, setInputEl] = useState<HTMLElement | null>(null);
+  const [inputElWidth, setInputElWidth] = useState<number>();
+  const [panelEl, setPanelEl] = useState<HTMLElement | null>(null);
 
   const inputRef = (node: HTMLElement | null) => setInputEl(node);
   const panelRef = (node: HTMLElement | null) => setPanelEl(node);
@@ -89,7 +89,7 @@ export const EuiInputPopover: FunctionComponent<Props> = ({
   }, [setPanelWidth]);
 
   const onKeyDown = (event: React.KeyboardEvent) => {
-    if (event.key === cascadingMenuKeys.TAB) {
+    if (panelEl && event.key === cascadingMenuKeys.TAB) {
       const tabbableItems = tabbable(panelEl).filter((el: HTMLElement) => {
         return (
           Array.from(el.attributes)
diff --git a/src/components/selectable/selectable_list/selectable_list.tsx b/src/components/selectable/selectable_list/selectable_list.tsx
index c655294665c..0acd005daed 100644
--- a/src/components/selectable/selectable_list/selectable_list.tsx
+++ b/src/components/selectable/selectable_list/selectable_list.tsx
@@ -238,7 +238,6 @@ export class EuiSelectableList<T> extends Component<EuiSelectableListProps<T>> {
         onClick={() => this.onAddOrRemoveOption(option)}
         ref={ref ? ref.bind(null, index) : undefined}
         isFocused={this.props.activeOptionIndex === index}
-        showIcons={this.props.showIcons}
         title={searchableLabel || label}
         checked={checked}
         disabled={disabled}
@@ -249,7 +248,8 @@ export class EuiSelectableList<T> extends Component<EuiSelectableListProps<T>> {
         onFocusBadge={this.props.onFocusBadge}
         allowExclusions={this.props.allowExclusions}
         // @ts-ignore complex
-        {...(optionRest as EuiSelectableListItemProps)}>
+        {...(optionRest as EuiSelectableListItemProps)}
+        showIcons={this.props.showIcons}>
         {this.props.renderOption ? (
           this.props.renderOption(option, this.props.searchValue)
         ) : (
diff --git a/src/components/selectable/selectable_templates/__snapshots__/selectable_template_sitewide_option.test.tsx.snap b/src/components/selectable/selectable_templates/__snapshots__/selectable_template_sitewide_option.test.tsx.snap
index d125b0ccacf..fe667598164 100644
--- a/src/components/selectable/selectable_templates/__snapshots__/selectable_template_sitewide_option.test.tsx.snap
+++ b/src/components/selectable/selectable_templates/__snapshots__/selectable_template_sitewide_option.test.tsx.snap
@@ -13,7 +13,7 @@ Array [
       "name": "Default Space",
     },
     "className": "euiSelectableTemplateSitewide__listItem testClass1 testClass2",
-    "data-test-subj": "test subject string",
+    "data-test-subj": "test-this",
     "key": "Basic data application",
     "label": "Basic data application",
     "meta": Array [
diff --git a/src/components/selectable/selectable_templates/selectable_template_sitewide.test.tsx b/src/components/selectable/selectable_templates/selectable_template_sitewide.test.tsx
index 968da981ba3..a421bcd6dd5 100644
--- a/src/components/selectable/selectable_templates/selectable_template_sitewide.test.tsx
+++ b/src/components/selectable/selectable_templates/selectable_template_sitewide.test.tsx
@@ -27,7 +27,6 @@ import { EuiSelectableTemplateSitewideOption } from './selectable_template_sitew
 const options: EuiSelectableTemplateSitewideOption[] = [
   {
     label: 'Basic data application',
-    'data-test-subj': 'test-this',
     avatar: {
       name: 'Default Space',
     },
@@ -39,6 +38,7 @@ const options: EuiSelectableTemplateSitewideOption[] = [
     ],
     url: 'welcome-dashboards',
     ...requiredProps,
+    'data-test-subj': 'test-this',
   },
   {
     label: 'Platform with deployment highlighted',
diff --git a/src/components/selectable/selectable_templates/selectable_template_sitewide_option.test.tsx b/src/components/selectable/selectable_templates/selectable_template_sitewide_option.test.tsx
index e1da0cf4c64..7a028b5a5fa 100644
--- a/src/components/selectable/selectable_templates/selectable_template_sitewide_option.test.tsx
+++ b/src/components/selectable/selectable_templates/selectable_template_sitewide_option.test.tsx
@@ -28,7 +28,6 @@ import {
 const options: EuiSelectableTemplateSitewideOption[] = [
   {
     label: 'Basic data application',
-    'data-test-subj': 'test-this',
     avatar: {
       name: 'Default Space',
     },
@@ -40,6 +39,7 @@ const options: EuiSelectableTemplateSitewideOption[] = [
     ],
     url: 'welcome-dashboards',
     ...requiredProps,
+    'data-test-subj': 'test-this',
   },
   {
     label: 'Platform with deployment highlighted',
diff --git a/src/components/selectable/selectable_templates/selectable_template_sitewide_option.tsx b/src/components/selectable/selectable_templates/selectable_template_sitewide_option.tsx
index 1b185f5c99e..6cd1de1ffbb 100644
--- a/src/components/selectable/selectable_templates/selectable_template_sitewide_option.tsx
+++ b/src/components/selectable/selectable_templates/selectable_template_sitewide_option.tsx
@@ -81,7 +81,6 @@ export const euiSelectableTemplateSitewideFormatOptions = (
 
     return {
       key: item.label,
-      label: item.label,
       title,
       ...item,
       className: classNames(
diff --git a/src/components/token/token.tsx b/src/components/token/token.tsx
index f145b78fa6a..cbf7fe25482 100644
--- a/src/components/token/token.tsx
+++ b/src/components/token/token.tsx
@@ -158,7 +158,7 @@ export const EuiToken: FunctionComponent<EuiTokenProps> = ({
 
   // If the iconType passed is one of the prefab token types,
   // grab its properties
-  if (iconType in TOKEN_MAP) {
+  if (typeof iconType === 'string' && iconType in TOKEN_MAP) {
     const tokenDisplay = TOKEN_MAP[iconType as EuiTokenMapType];
     finalDisplay = defaults(currentDisplay, tokenDisplay);
   } else {
diff --git a/src/services/copy_to_clipboard.ts b/src/services/copy_to_clipboard.ts
index 5b3f90058fc..027cac3c901 100644
--- a/src/services/copy_to_clipboard.ts
+++ b/src/services/copy_to_clipboard.ts
@@ -32,6 +32,7 @@ function createHiddenTextElement(text: string): HTMLSpanElement {
   textElement.style.webkitUserSelect = 'text';
   // @ts-ignore this one doesn't appear in the TS definitions for some reason
   textElement.style.MozUserSelect = 'text';
+  // @ts-ignore this one doesn't appear in the TS definitions for some reason
   textElement.style.msUserSelect = 'text';
   textElement.style.userSelect = 'text';
   return textElement;
diff --git a/src/services/utils.ts b/src/services/utils.ts
index 3df09cb4d53..653fd67c030 100644
--- a/src/services/utils.ts
+++ b/src/services/utils.ts
@@ -23,8 +23,7 @@ import _memoize from 'lodash/memoize';
 // wrap the lodash functions to avoid having lodash's TS type definition from being
 // exported, which can conflict with the lodash namespace if other versions are used
 
-/* eslint-disable import/export */
-export function times<T>(count: number): number[];
+export function times(count: number): number[];
 export function times<T>(count: number, iteratee: (index: number) => T): T[];
 export function times<T>(count: number, iteratee?: (index: number) => T) {
   if (iteratee === undefined) {
@@ -32,9 +31,7 @@ export function times<T>(count: number, iteratee?: (index: number) => T) {
   }
   return _times(count, iteratee);
 }
-/* eslint-enable import/export */
 
-// eslint-disable-next-line space-before-function-paren
 export function memoize<T extends (...args: any[]) => any>(
   func: T,
   resolver?: (...args: any[]) => any
diff --git a/yarn.lock b/yarn.lock
index da1379502d5..570af4717df 100755
--- a/yarn.lock
+++ b/yarn.lock
@@ -63,12 +63,12 @@
     semver "^5.4.1"
     source-map "^0.5.0"
 
-"@babel/generator@^7.11.4", "@babel/generator@^7.11.5", "@babel/generator@^7.4.0", "@babel/generator@^7.7.0":
-  version "7.11.6"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.11.6.tgz#b868900f81b163b4d464ea24545c61cbac4dc620"
-  integrity sha512-DWtQ1PV3r+cLbySoHrwn9RWEgKMBLLma4OBQloPRyDYvc5msJM9kvTLo1YnlJd1P/ZuKbdli3ijr5q3FvAF3uA==
+"@babel/generator@^7.11.4", "@babel/generator@^7.12.10", "@babel/generator@^7.4.0", "@babel/generator@^7.7.0":
+  version "7.12.10"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.12.10.tgz#2b188fc329fb8e4f762181703beffc0fe6df3460"
+  integrity sha512-6mCdfhWgmqLdtTkhXjnIz0LcdVCd26wS2JXRtj2XY0u5klDsXBREA/pG5NVOuVnF2LUrBGNFtQkIqqTbblg0ww==
   dependencies:
-    "@babel/types" "^7.11.5"
+    "@babel/types" "^7.12.10"
     jsesc "^2.5.1"
     source-map "^0.5.0"
 
@@ -115,16 +115,15 @@
     levenary "^1.1.1"
     semver "^5.5.0"
 
-"@babel/helper-create-class-features-plugin@^7.10.4", "@babel/helper-create-class-features-plugin@^7.10.5":
-  version "7.10.5"
-  resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.10.5.tgz#9f61446ba80e8240b0a5c85c6fdac8459d6f259d"
-  integrity sha512-0nkdeijB7VlZoLT3r/mY3bUkw3T8WG/hNw+FATs/6+pG2039IJWjTYL0VTISqsNHMUTEnwbVnc89WIJX9Qed0A==
+"@babel/helper-create-class-features-plugin@^7.10.4", "@babel/helper-create-class-features-plugin@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.12.1.tgz#3c45998f431edd4a9214c5f1d3ad1448a6137f6e"
+  integrity sha512-hkL++rWeta/OVOBTRJc9a5Azh5mt5WgZUGAKMD8JM141YsE08K//bp1unBBieO6rUKkIPyUE0USQ30jAy3Sk1w==
   dependencies:
     "@babel/helper-function-name" "^7.10.4"
-    "@babel/helper-member-expression-to-functions" "^7.10.5"
+    "@babel/helper-member-expression-to-functions" "^7.12.1"
     "@babel/helper-optimise-call-expression" "^7.10.4"
-    "@babel/helper-plugin-utils" "^7.10.4"
-    "@babel/helper-replace-supers" "^7.10.4"
+    "@babel/helper-replace-supers" "^7.12.1"
     "@babel/helper-split-export-declaration" "^7.10.4"
 
 "@babel/helper-create-regexp-features-plugin@^7.10.4":
@@ -175,12 +174,12 @@
   dependencies:
     "@babel/types" "^7.10.4"
 
-"@babel/helper-member-expression-to-functions@^7.10.4", "@babel/helper-member-expression-to-functions@^7.10.5":
-  version "7.11.0"
-  resolved "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.11.0.tgz#ae69c83d84ee82f4b42f96e2a09410935a8f26df"
-  integrity sha512-JbFlKHFntRV5qKw3YC0CvQnDZ4XMwgzzBbld7Ly4Mj4cbFy3KywcR8NtNctRToMWJOVvLINJv525Gd6wwVEx/Q==
+"@babel/helper-member-expression-to-functions@^7.12.1":
+  version "7.12.7"
+  resolved "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.12.7.tgz#aa77bd0396ec8114e5e30787efa78599d874a855"
+  integrity sha512-DCsuPyeWxeHgh1Dus7APn7iza42i/qXqiFPWyBDdOFtvS581JQePsc1F/nD+fHrcswhLlRc2UpYS1NwERxZhHw==
   dependencies:
-    "@babel/types" "^7.11.0"
+    "@babel/types" "^7.12.7"
 
 "@babel/helper-module-imports@^7.10.4":
   version "7.10.4"
@@ -231,15 +230,15 @@
     "@babel/template" "^7.10.4"
     "@babel/types" "^7.10.4"
 
-"@babel/helper-replace-supers@^7.10.4":
-  version "7.10.4"
-  resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.10.4.tgz#d585cd9388ea06e6031e4cd44b6713cbead9e6cf"
-  integrity sha512-sPxZfFXocEymYTdVK1UNmFPBN+Hv5mJkLPsYWwGBxZAxaWfFu+xqp7b6qWD0yjNuNL2VKc6L5M18tOXUP7NU0A==
+"@babel/helper-replace-supers@^7.10.4", "@babel/helper-replace-supers@^7.12.1":
+  version "7.12.5"
+  resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.12.5.tgz#f009a17543bbbbce16b06206ae73b63d3fca68d9"
+  integrity sha512-5YILoed0ZyIpF4gKcpZitEnXEJ9UoDRki1Ey6xz46rxOzfNMAhVIJMoune1hmPVxh40LRv1+oafz7UsWX+vyWA==
   dependencies:
-    "@babel/helper-member-expression-to-functions" "^7.10.4"
+    "@babel/helper-member-expression-to-functions" "^7.12.1"
     "@babel/helper-optimise-call-expression" "^7.10.4"
-    "@babel/traverse" "^7.10.4"
-    "@babel/types" "^7.10.4"
+    "@babel/traverse" "^7.12.5"
+    "@babel/types" "^7.12.5"
 
 "@babel/helper-simple-access@^7.10.4":
   version "7.10.4"
@@ -296,10 +295,10 @@
     chalk "^2.0.0"
     js-tokens "^4.0.0"
 
-"@babel/parser@^7.0.0", "@babel/parser@^7.1.0", "@babel/parser@^7.10.4", "@babel/parser@^7.11.4", "@babel/parser@^7.11.5", "@babel/parser@^7.4.3", "@babel/parser@^7.6.0", "@babel/parser@^7.7.0":
-  version "7.11.5"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.11.5.tgz#c7ff6303df71080ec7a4f5b8c003c58f1cf51037"
-  integrity sha512-X9rD8qqm695vgmeaQ4fvz/o3+Wk4ZzQvSHkDBgpYKxpD4qTAUm88ZKtHkVqIOsYFFbIQ6wQYhC6q7pjqVK0E0Q==
+"@babel/parser@^7.0.0", "@babel/parser@^7.1.0", "@babel/parser@^7.10.4", "@babel/parser@^7.11.4", "@babel/parser@^7.12.10", "@babel/parser@^7.4.3", "@babel/parser@^7.6.0", "@babel/parser@^7.7.0":
+  version "7.12.10"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.12.10.tgz#824600d59e96aea26a5a2af5a9d812af05c3ae81"
+  integrity sha512-PJdRPwyoOqFAWfLytxrWwGrAxghCgh/yTNCYciOz8QgjflA7aZhECPZAa2VUedKg2+QMWkI0L9lynh2SNmNEgA==
 
 "@babel/plugin-proposal-async-generator-functions@^7.10.4":
   version "7.10.5"
@@ -499,10 +498,10 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
 
-"@babel/plugin-syntax-typescript@^7.10.4":
-  version "7.10.4"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.10.4.tgz#2f55e770d3501e83af217d782cb7517d7bb34d25"
-  integrity sha512-oSAEz1YkBCAKr5Yiq8/BNtvSAPwkp/IyUnwZogd8p+F0RuYQQrLeRUzIQhueQTTBy/F+a40uS7OFKxnkRvmvFQ==
+"@babel/plugin-syntax-typescript@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.12.1.tgz#460ba9d77077653803c3dd2e673f76d66b4029e5"
+  integrity sha512-UZNEcCY+4Dp9yYRCAHrHDU+9ZXLYaY9MgBXSRLkB9WjYFRR6quJBumfVrEkUxrePPBwFcpWfNKXqVRQQtm7mMA==
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
 
@@ -802,14 +801,14 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
 
-"@babel/plugin-transform-typescript@^7.10.4":
-  version "7.11.0"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-typescript/-/plugin-transform-typescript-7.11.0.tgz#2b4879676af37342ebb278216dd090ac67f13abb"
-  integrity sha512-edJsNzTtvb3MaXQwj8403B7mZoGu9ElDJQZOKjGUnvilquxBA3IQoEIOvkX/1O8xfAsnHS/oQhe2w/IXrr+w0w==
+"@babel/plugin-transform-typescript@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-typescript/-/plugin-transform-typescript-7.12.1.tgz#d92cc0af504d510e26a754a7dbc2e5c8cd9c7ab4"
+  integrity sha512-VrsBByqAIntM+EYMqSm59SiMEf7qkmI9dqMt6RbD/wlwueWmYcI0FFK5Fj47pP6DRZm+3teXjosKlwcZJ5lIMw==
   dependencies:
-    "@babel/helper-create-class-features-plugin" "^7.10.5"
+    "@babel/helper-create-class-features-plugin" "^7.12.1"
     "@babel/helper-plugin-utils" "^7.10.4"
-    "@babel/plugin-syntax-typescript" "^7.10.4"
+    "@babel/plugin-syntax-typescript" "^7.12.1"
 
 "@babel/plugin-transform-unicode-escapes@^7.10.4":
   version "7.10.4"
@@ -924,13 +923,13 @@
     "@babel/plugin-transform-react-jsx-source" "^7.10.4"
     "@babel/plugin-transform-react-pure-annotations" "^7.10.4"
 
-"@babel/preset-typescript@^7.10.4":
-  version "7.10.4"
-  resolved "https://registry.yarnpkg.com/@babel/preset-typescript/-/preset-typescript-7.10.4.tgz#7d5d052e52a682480d6e2cc5aa31be61c8c25e36"
-  integrity sha512-SdYnvGPv+bLlwkF2VkJnaX/ni1sMNetcGI1+nThF1gyv6Ph8Qucc4ZZAjM5yZcE/AKRXIOTZz7eSRDWOEjPyRQ==
+"@babel/preset-typescript@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/preset-typescript/-/preset-typescript-7.12.1.tgz#86480b483bb97f75036e8864fe404cc782cc311b"
+  integrity sha512-hNK/DhmoJPsksdHuI/RVrcEws7GN5eamhi28JkO52MqIxU8Z0QpmiSOQxZHWOHV7I3P4UjHV97ay4TcamMA6Kw==
   dependencies:
     "@babel/helper-plugin-utils" "^7.10.4"
-    "@babel/plugin-transform-typescript" "^7.10.4"
+    "@babel/plugin-transform-typescript" "^7.12.1"
 
 "@babel/runtime-corejs2@7.6.0":
   version "7.6.0"
@@ -964,25 +963,25 @@
     "@babel/parser" "^7.10.4"
     "@babel/types" "^7.10.4"
 
-"@babel/traverse@^7.1.0", "@babel/traverse@^7.10.4", "@babel/traverse@^7.11.0", "@babel/traverse@^7.4.3", "@babel/traverse@^7.7.0":
-  version "7.11.5"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.11.5.tgz#be777b93b518eb6d76ee2e1ea1d143daa11e61c3"
-  integrity sha512-EjiPXt+r7LiCZXEfRpSJd+jUMnBd4/9OUv7Nx3+0u9+eimMwJmG0Q98lw4/289JCoxSE8OolDMNZaaF/JZ69WQ==
+"@babel/traverse@^7.1.0", "@babel/traverse@^7.10.4", "@babel/traverse@^7.11.0", "@babel/traverse@^7.12.5", "@babel/traverse@^7.4.3", "@babel/traverse@^7.7.0":
+  version "7.12.10"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.12.10.tgz#2d1f4041e8bf42ea099e5b2dc48d6a594c00017a"
+  integrity sha512-6aEtf0IeRgbYWzta29lePeYSk+YAFIC3kyqESeft8o5CkFlYIMX+EQDDWEiAQ9LHOA3d0oHdgrSsID/CKqXJlg==
   dependencies:
     "@babel/code-frame" "^7.10.4"
-    "@babel/generator" "^7.11.5"
+    "@babel/generator" "^7.12.10"
     "@babel/helper-function-name" "^7.10.4"
     "@babel/helper-split-export-declaration" "^7.11.0"
-    "@babel/parser" "^7.11.5"
-    "@babel/types" "^7.11.5"
+    "@babel/parser" "^7.12.10"
+    "@babel/types" "^7.12.10"
     debug "^4.1.0"
     globals "^11.1.0"
     lodash "^4.17.19"
 
-"@babel/types@^7.0.0", "@babel/types@^7.10.4", "@babel/types@^7.10.5", "@babel/types@^7.11.0", "@babel/types@^7.11.5", "@babel/types@^7.3.0", "@babel/types@^7.4.0", "@babel/types@^7.4.4", "@babel/types@^7.7.0", "@babel/types@^7.7.1", "@babel/types@^7.9.5":
-  version "7.11.5"
-  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.11.5.tgz#d9de577d01252d77c6800cee039ee64faf75662d"
-  integrity sha512-bvM7Qz6eKnJVFIn+1LPtjlBFPVN5jNDc1XmN15vWe7Q3DPBufWWsLiIvUu7xW87uTG6QoggpIDnUgLQvPheU+Q==
+"@babel/types@^7.0.0", "@babel/types@^7.10.4", "@babel/types@^7.10.5", "@babel/types@^7.11.0", "@babel/types@^7.12.10", "@babel/types@^7.12.5", "@babel/types@^7.12.7", "@babel/types@^7.3.0", "@babel/types@^7.4.0", "@babel/types@^7.4.4", "@babel/types@^7.7.0", "@babel/types@^7.7.1", "@babel/types@^7.9.5":
+  version "7.12.10"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.12.10.tgz#7965e4a7260b26f09c56bcfcb0498af1f6d9b260"
+  integrity sha512-sf6wboJV5mGyip2hIpDSKsr80RszPinEFjsHTalMxZAZkoQ2/2yQzxlcFN52SJqsyPfLtPmenL4g2KB3KJXPDw==
   dependencies:
     "@babel/helper-validator-identifier" "^7.10.4"
     lodash "^4.17.19"
@@ -1599,11 +1598,6 @@
     "@types/cheerio" "*"
     "@types/react" "*"
 
-"@types/eslint-visitor-keys@^1.0.0":
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#1ee30d79544ca84d68d4b3cdb0af4f205663dd2d"
-  integrity sha512-OCutwjDZ4aFS6PB1UZ988C4YgwlBHJd6wCeQqaLdmadZ/7e+w79+hbMUFC1QXDNCmdyoRfAFdm0RypzwR+Qpag==
-
 "@types/events@*":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
@@ -1914,26 +1908,28 @@
   dependencies:
     "@types/node" "*"
 
-"@typescript-eslint/eslint-plugin@^3.10.1":
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-3.10.1.tgz#7e061338a1383f59edc204c605899f93dc2e2c8f"
-  integrity sha512-PQg0emRtzZFWq6PxBcdxRH3QIQiyFO3WCVpRL3fgj5oQS3CDs3AeAKfv4DxNhzn8ITdNJGJ4D3Qw8eAJf3lXeQ==
+"@typescript-eslint/eslint-plugin@^4.8.1":
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.8.1.tgz#b362abe0ee478a6c6d06c14552a6497f0b480769"
+  integrity sha512-d7LeQ7dbUrIv5YVFNzGgaW3IQKMmnmKFneRWagRlGYOSfLJVaRbj/FrBNOBC1a3tVO+TgNq1GbHvRtg1kwL0FQ==
   dependencies:
-    "@typescript-eslint/experimental-utils" "3.10.1"
+    "@typescript-eslint/experimental-utils" "4.8.1"
+    "@typescript-eslint/scope-manager" "4.8.1"
     debug "^4.1.1"
     functional-red-black-tree "^1.0.1"
     regexpp "^3.0.0"
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/experimental-utils@3.10.1":
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-3.10.1.tgz#e179ffc81a80ebcae2ea04e0332f8b251345a686"
-  integrity sha512-DewqIgscDzmAfd5nOGe4zm6Bl7PKtMG2Ad0KG8CUZAHlXfAKTF9Ol5PXhiMh39yRL2ChRH1cuuUGOcVyyrhQIw==
+"@typescript-eslint/experimental-utils@4.8.1":
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.8.1.tgz#27275c20fa4336df99ebcf6195f7d7aa7aa9f22d"
+  integrity sha512-WigyLn144R3+lGATXW4nNcDJ9JlTkG8YdBWHkDlN0lC3gUGtDi7Pe3h5GPvFKMcRz8KbZpm9FJV9NTW8CpRHpg==
   dependencies:
     "@types/json-schema" "^7.0.3"
-    "@typescript-eslint/types" "3.10.1"
-    "@typescript-eslint/typescript-estree" "3.10.1"
+    "@typescript-eslint/scope-manager" "4.8.1"
+    "@typescript-eslint/types" "4.8.1"
+    "@typescript-eslint/typescript-estree" "4.8.1"
     eslint-scope "^5.0.0"
     eslint-utils "^2.0.0"
 
@@ -1949,16 +1945,15 @@
     eslint-scope "^5.0.0"
     eslint-utils "^2.0.0"
 
-"@typescript-eslint/parser@^3.10.1":
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-3.10.1.tgz#1883858e83e8b442627e1ac6f408925211155467"
-  integrity sha512-Ug1RcWcrJP02hmtaXVS3axPPTTPnZjupqhgj+NnZ6BCkwSImWk/283347+x9wN+lqOdK9Eo3vsyiyDHgsmiEJw==
+"@typescript-eslint/parser@^4.8.1":
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.8.1.tgz#4fe2fbdbb67485bafc4320b3ae91e34efe1219d1"
+  integrity sha512-QND8XSVetATHK9y2Ltc/XBl5Ro7Y62YuZKnPEwnNPB8E379fDsvzJ1dMJ46fg/VOmk0hXhatc+GXs5MaXuL5Uw==
   dependencies:
-    "@types/eslint-visitor-keys" "^1.0.0"
-    "@typescript-eslint/experimental-utils" "3.10.1"
-    "@typescript-eslint/types" "3.10.1"
-    "@typescript-eslint/typescript-estree" "3.10.1"
-    eslint-visitor-keys "^1.1.0"
+    "@typescript-eslint/scope-manager" "4.8.1"
+    "@typescript-eslint/types" "4.8.1"
+    "@typescript-eslint/typescript-estree" "4.8.1"
+    debug "^4.1.1"
 
 "@typescript-eslint/scope-manager@4.4.0":
   version "4.4.0"
@@ -1968,16 +1963,24 @@
     "@typescript-eslint/types" "4.4.0"
     "@typescript-eslint/visitor-keys" "4.4.0"
 
-"@typescript-eslint/types@3.10.1":
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-3.10.1.tgz#1d7463fa7c32d8a23ab508a803ca2fe26e758727"
-  integrity sha512-+3+FCUJIahE9q0lDi1WleYzjCwJs5hIsbugIgnbB+dSCYUxl8L6PwmsyOPFZde2hc1DlTo/xnkOgiTLSyAbHiQ==
+"@typescript-eslint/scope-manager@4.8.1":
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.8.1.tgz#e343c475f8f1d15801b546cb17d7f309b768fdce"
+  integrity sha512-r0iUOc41KFFbZdPAdCS4K1mXivnSZqXS5D9oW+iykQsRlTbQRfuFRSW20xKDdYiaCoH+SkSLeIF484g3kWzwOQ==
+  dependencies:
+    "@typescript-eslint/types" "4.8.1"
+    "@typescript-eslint/visitor-keys" "4.8.1"
 
 "@typescript-eslint/types@4.4.0":
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.4.0.tgz#63440ef87a54da7399a13bdd4b82060776e9e621"
   integrity sha512-nU0VUpzanFw3jjX+50OTQy6MehVvf8pkqFcURPAE06xFNFenMj1GPEI6IESvp7UOHAnq+n/brMirZdR+7rCrlA==
 
+"@typescript-eslint/types@4.8.1":
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.8.1.tgz#23829c73c5fc6f4fcd5346a7780b274f72fee222"
+  integrity sha512-ave2a18x2Y25q5K05K/U3JQIe2Av4+TNi/2YuzyaXLAsDx6UZkz1boZ7nR/N6Wwae2PpudTZmHFXqu7faXfHmA==
+
 "@typescript-eslint/typescript-estree@1.11.0":
   version "1.11.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-1.11.0.tgz#b7b5782aab22e4b3b6d84633652c9f41e62d37d5"
@@ -1986,20 +1989,6 @@
     lodash.unescape "4.0.1"
     semver "5.5.0"
 
-"@typescript-eslint/typescript-estree@3.10.1":
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-3.10.1.tgz#fd0061cc38add4fad45136d654408569f365b853"
-  integrity sha512-QbcXOuq6WYvnB3XPsZpIwztBoquEYLXh2MtwVU+kO8jgYCiv4G5xrSP/1wg4tkvrEE+esZVquIPX/dxPlePk1w==
-  dependencies:
-    "@typescript-eslint/types" "3.10.1"
-    "@typescript-eslint/visitor-keys" "3.10.1"
-    debug "^4.1.1"
-    glob "^7.1.6"
-    is-glob "^4.0.1"
-    lodash "^4.17.15"
-    semver "^7.3.2"
-    tsutils "^3.17.1"
-
 "@typescript-eslint/typescript-estree@4.4.0":
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.4.0.tgz#16a2df7c16710ddd5406b32b86b9c1124b1ca526"
@@ -2014,12 +2003,19 @@
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/visitor-keys@3.10.1":
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-3.10.1.tgz#cd4274773e3eb63b2e870ac602274487ecd1e931"
-  integrity sha512-9JgC82AaQeglebjZMgYR5wgmfUdUc+EitGUUMW8u2nDckaeimzW+VsoLV6FoimPv2id3VQzfjwBxEMVz08ameQ==
+"@typescript-eslint/typescript-estree@4.8.1":
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.8.1.tgz#7307e3f2c9e95df7daa8dc0a34b8c43b7ec0dd32"
+  integrity sha512-bJ6Fn/6tW2g7WIkCWh3QRlaSU7CdUUK52shx36/J7T5oTQzANvi6raoTsbwGM11+7eBbeem8hCCKbyvAc0X3sQ==
   dependencies:
-    eslint-visitor-keys "^1.1.0"
+    "@typescript-eslint/types" "4.8.1"
+    "@typescript-eslint/visitor-keys" "4.8.1"
+    debug "^4.1.1"
+    globby "^11.0.1"
+    is-glob "^4.0.1"
+    lodash "^4.17.15"
+    semver "^7.3.2"
+    tsutils "^3.17.1"
 
 "@typescript-eslint/visitor-keys@4.4.0":
   version "4.4.0"
@@ -2029,6 +2025,14 @@
     "@typescript-eslint/types" "4.4.0"
     eslint-visitor-keys "^2.0.0"
 
+"@typescript-eslint/visitor-keys@4.8.1":
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.8.1.tgz#794f68ee292d1b2e3aa9690ebedfcb3a8c90e3c3"
+  integrity sha512-3nrwXFdEYALQh/zW8rFwP4QltqsanCDz4CwWMPiIZmwlk9GlvBeueEIbq05SEq4ganqM0g9nh02xXgv5XI3PeQ==
+  dependencies:
+    "@typescript-eslint/types" "4.8.1"
+    eslint-visitor-keys "^2.0.0"
+
 "@webassemblyjs/ast@1.9.0":
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.9.0.tgz#bd850604b4042459a5a41cd7d338cbed695ed964"
@@ -13075,10 +13079,10 @@ react-clientside-effect@^1.2.2:
   dependencies:
     "@babel/runtime" "^7.0.0"
 
-react-docgen-typescript@^1.20.3:
-  version "1.20.3"
-  resolved "https://registry.yarnpkg.com/react-docgen-typescript/-/react-docgen-typescript-1.20.3.tgz#d121bcb3ed8ab0a2c75f37fb3f90413cb4dbd429"
-  integrity sha512-ISdbO2O5BbD62trroxGmcQXlkFzARRL8ylK0tdnzllGuxcMu3IbnPOFOY/dOfRl8K4LVG9U8yulEVwpyGxGNYA==
+react-docgen-typescript@^1.20.5:
+  version "1.20.5"
+  resolved "https://registry.yarnpkg.com/react-docgen-typescript/-/react-docgen-typescript-1.20.5.tgz#fb8d78a707243498436c2952bd3f6f488a68d4f3"
+  integrity sha512-AbLGMtn76bn7SYBJSSaKJrZ0lgNRRR3qL60PucM5M4v/AXyC8221cKBXW5Pyt9TfDRfe+LDnPNlg7TibxX0ovA==
 
 react-dom@^16.12.0:
   version "16.12.0"
@@ -15943,10 +15947,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.7.2:
-  version "3.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
-  integrity sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==
+typescript@4.0.5:
+  version "4.0.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.5.tgz#ae9dddfd1069f1cb5beb3ef3b2170dd7c1332389"
+  integrity sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==
 
 uglify-js@^3.6.0:
   version "3.10.2"