diff --git a/README.md b/README.md
index fcc219a62f..e1af98a4c0 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,7 @@
   - [`useGeolocation`](./docs/useGeolocation.md) — tracks geo location state of user's device. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/sensors-usegeolocation--demo)
   - [`useHover` and `useHoverDirty`](./docs/useHover.md) — tracks mouse hover state of some element. [![][img-demo]](https://codesandbox.io/s/zpn583rvx)
   - [`useIdle`](./docs/useIdle.md) — tracks whether user is being inactive.
+  - [`useIntersection`](./docs/useIntersection.md) — tracks an HTML element's intersection. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/sensors-useintersection--demo)
   - [`useKey`](./docs/useKey.md), [`useKeyPress`](./docs/useKeyPress.md), [`useKeyboardJs`](./docs/useKeyboardJs.md), and [`useKeyPressEvent`](./docs/useKeyPressEvent.md) — track keys. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/sensors-usekeypressevent--demo)
   - [`useLocation`](./docs/useLocation.md) and [`useSearchParam`](./docs/useSearchParam.md) — tracks page navigation bar location state.
   - [`useMedia`](./docs/useMedia.md) — tracks state of a CSS media query. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/sensors-usemedia--demo)
@@ -104,7 +105,7 @@
   - [`useTitle`](./docs/useTitle.md) — sets title of the page.
   - [`usePermission`](./docs/usePermission.md) — query permission status for browser APIs.
     <br/>
-    <br/> 
+    <br/>
 - [**Lifecycles**](./docs/Lifecycles.md)
   - [`useEffectOnce`](./docs/useEffectOnce.md) &mdash; a modified [`useEffect`](https://reactjs.org/docs/hooks-reference.html#useeffect) hook that only runs once.
   - [`useEvent`](./docs/useEvent.md) &mdash; subscribe to events.
@@ -135,7 +136,6 @@
   - [`useMap`](./docs/useMap.md) &mdash; tracks state of an object. [![][img-demo]](https://codesandbox.io/s/quirky-dewdney-gi161)
   - [`useStateValidator`](./docs/useStateValidator.md) &mdash; tracks state of an object. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/state-usestatevalidator--demo)
 
-
 <br />
 <br />
 <br />
@@ -160,7 +160,6 @@
 
 [img-demo]: https://img.shields.io/badge/demo-%20%20%20%F0%9F%9A%80-green.svg
 
-
 <div align="center">
   <h1>Contributors</h1>
 </div>
diff --git a/docs/useIntersection.md b/docs/useIntersection.md
new file mode 100644
index 0000000000..802ee1da6a
--- /dev/null
+++ b/docs/useIntersection.md
@@ -0,0 +1,36 @@
+# `useIntersection`
+
+React sensor hook that tracks the changes in the intersection of a target element with an ancestor element or with a top-level document's viewport. Uses the [Intersection Observer API](https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API) and returns a [IntersectionObserverEntry](https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserverEntry).
+
+## Usage
+
+```jsx
+import * as React from 'react';
+import { useIntersection } from 'react-use';
+
+const Demo = () => {
+  const intersectionRef = React.useRef(null);
+  const intersection = useIntersection(intersectionRef, {
+    root: null,
+    rootMargin: '0px',
+    threshold: 1
+  });
+
+  return (
+    <div ref={intersectionRef}>
+      {intersection && intersection.intersectionRatio < 1
+        ? 'Obscured'
+        : 'Fully in view'}
+    </div>
+  );
+};
+```
+
+## Reference
+
+```ts
+useIntersection(
+  ref: RefObject<HTMLElement>,
+  options: IntersectionObserverInit,
+): IntersectionObserverEntry | null;
+```
diff --git a/package.json b/package.json
index 043fdb10f4..e898b3788f 100644
--- a/package.json
+++ b/package.json
@@ -69,6 +69,7 @@
     "@semantic-release/changelog": "3.0.4",
     "@semantic-release/git": "7.0.16",
     "@semantic-release/npm": "5.1.13",
+    "@shopify/jest-dom-mocks": "^2.8.2",
     "@storybook/addon-actions": "5.1.11",
     "@storybook/addon-knobs": "5.1.11",
     "@storybook/addon-notes": "5.1.11",
diff --git a/src/__stories__/useIntersection.story.tsx b/src/__stories__/useIntersection.story.tsx
new file mode 100644
index 0000000000..fb8c1226dc
--- /dev/null
+++ b/src/__stories__/useIntersection.story.tsx
@@ -0,0 +1,53 @@
+import { storiesOf } from '@storybook/react';
+import * as React from 'react';
+import { useIntersection } from '..';
+import ShowDocs from './util/ShowDocs';
+
+const Spacer = () => (
+  <div
+    style={{
+      width: '200px',
+      height: '300px',
+      backgroundColor: 'whitesmoke',
+    }}
+  />
+);
+
+const Demo = () => {
+  const intersectionRef = React.useRef(null);
+  const intersection = useIntersection(intersectionRef, {
+    root: null,
+    rootMargin: '0px',
+    threshold: 1,
+  });
+
+  return (
+    <div
+      style={{
+        width: '400px',
+        height: '400px',
+        backgroundColor: 'whitesmoke',
+        overflow: 'scroll',
+      }}
+    >
+      Scroll me
+      <Spacer />
+      <div
+        ref={intersectionRef}
+        style={{
+          width: '100px',
+          height: '100px',
+          padding: '20px',
+          backgroundColor: 'palegreen',
+        }}
+      >
+        {intersection && intersection.intersectionRatio < 1 ? 'Obscured' : 'Fully in view'}
+      </div>
+      <Spacer />
+    </div>
+  );
+};
+
+storiesOf('Sensors/useIntersection', module)
+  .add('Docs', () => <ShowDocs md={require('../../docs/useIntersection.md')} />)
+  .add('Demo', () => <Demo />);
diff --git a/src/__tests__/useIntersection.test.tsx b/src/__tests__/useIntersection.test.tsx
new file mode 100644
index 0000000000..ee7342b2a7
--- /dev/null
+++ b/src/__tests__/useIntersection.test.tsx
@@ -0,0 +1,119 @@
+import React, { createRef } from 'react';
+import ReactDOM from 'react-dom';
+import TestUtils from 'react-dom/test-utils';
+import TestRenderer from 'react-test-renderer';
+import { intersectionObserver } from '@shopify/jest-dom-mocks';
+import { renderHook } from '@testing-library/react-hooks';
+import { useIntersection } from '..';
+
+beforeEach(() => {
+  intersectionObserver.mock();
+});
+
+afterEach(() => {
+  intersectionObserver.restore();
+});
+
+describe('useIntersection', () => {
+  const container = document.createElement('div');
+  let targetRef;
+
+  it('should be defined', () => {
+    expect(useIntersection).toBeDefined();
+  });
+
+  it('should setup an IntersectionObserver targeting the ref element and using the options provided', () => {
+    TestUtils.act(() => {
+      targetRef = createRef();
+      ReactDOM.render(<div ref={targetRef} />, container);
+    });
+
+    expect(intersectionObserver.observers).toHaveLength(0);
+    const observerOptions = { root: null, threshold: 0.8 };
+
+    renderHook(() => useIntersection(targetRef, observerOptions));
+
+    expect(intersectionObserver.observers).toHaveLength(1);
+    expect(intersectionObserver.observers[0].target).toEqual(targetRef.current);
+    expect(intersectionObserver.observers[0].options).toEqual(observerOptions);
+  });
+
+  it('should return null if a ref without a current value is provided', () => {
+    targetRef = createRef();
+
+    const { result } = renderHook(() => useIntersection(targetRef, { root: null, threshold: 1 }));
+    expect(result.current).toBe(null);
+  });
+
+  it('should return the first IntersectionObserverEntry when the IntersectionObserver registers an intersection', () => {
+    TestUtils.act(() => {
+      targetRef = createRef();
+      ReactDOM.render(<div ref={targetRef} />, container);
+    });
+
+    const { result } = renderHook(() => useIntersection(targetRef, { root: container, threshold: 0.8 }));
+
+    const mockIntersectionObserverEntry = {
+      boundingClientRect: targetRef.current.getBoundingClientRect(),
+      intersectionRatio: 0.81,
+      intersectionRect: container.getBoundingClientRect(),
+      isIntersecting: true,
+      rootBounds: container.getBoundingClientRect(),
+      target: targetRef.current,
+      time: 300,
+    };
+    TestRenderer.act(() => {
+      intersectionObserver.simulate(mockIntersectionObserverEntry);
+    });
+
+    expect(result.current).toEqual(mockIntersectionObserverEntry);
+  });
+
+  it('should setup a new IntersectionObserver when the ref changes', () => {
+    let newRef;
+    TestUtils.act(() => {
+      targetRef = createRef();
+      newRef = createRef();
+      ReactDOM.render(
+        <div ref={targetRef}>
+          <span ref={newRef} />
+        </div>,
+        container
+      );
+    });
+
+    const observerOptions = { root: null, threshold: 0.8 };
+    const { rerender } = renderHook(({ ref, options }) => useIntersection(ref, options), {
+      initialProps: { ref: targetRef, options: observerOptions },
+    });
+
+    expect(intersectionObserver.observers[0].target).toEqual(targetRef.current);
+
+    TestRenderer.act(() => {
+      rerender({ ref: newRef, options: observerOptions });
+    });
+
+    expect(intersectionObserver.observers[0].target).toEqual(newRef.current);
+  });
+
+  it('should setup a new IntersectionObserver when the options change', () => {
+    TestUtils.act(() => {
+      targetRef = createRef();
+      ReactDOM.render(<div ref={targetRef} />, container);
+    });
+
+    const initialObserverOptions = { root: null, threshold: 0.8 };
+    const { rerender } = renderHook(({ ref, options }) => useIntersection(ref, options), {
+      initialProps: { ref: targetRef, options: initialObserverOptions },
+    });
+
+    expect(intersectionObserver.observers[0].options).toEqual(initialObserverOptions);
+
+    const newObserverOptions = { root: container, threshold: 1 };
+    TestRenderer.act(() => {
+      rerender({ ref: targetRef, options: newObserverOptions });
+    });
+
+    expect(intersectionObserver.observers[0].options).toEqual(newObserverOptions);
+  });
+});
diff --git a/src/index.ts b/src/index.ts
index a3a933feb9..65872134d6 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -27,6 +27,7 @@ export { default as useHarmonicIntervalFn } from './useHarmonicIntervalFn';
 export { default as useHover } from './useHover';
 export { default as useHoverDirty } from './useHoverDirty';
 export { default as useIdle } from './useIdle';
+export { default as useIntersection } from './useIntersection';
 export { default as useInterval } from './useInterval';
 export { default as useIsomorphicLayoutEffect } from './useIsomorphicLayoutEffect';
 export { default as useKey } from './useKey';
diff --git a/src/useIntersection.ts b/src/useIntersection.ts
new file mode 100644
index 0000000000..4a7b78eaca
--- /dev/null
+++ b/src/useIntersection.ts
@@ -0,0 +1,30 @@
+import { RefObject, useEffect, useState } from 'react';
+
+const useIntersection = (
+  ref: RefObject<HTMLElement>,
+  options: IntersectionObserverInit
+): IntersectionObserverEntry | null => {
+  const [intersectionObserverEntry, setIntersectionObserverEntry] = useState<IntersectionObserverEntry | null>(null);
+
+  useEffect(() => {
+    if (ref.current) {
+      const handler = (entries: IntersectionObserverEntry[]) => {
+        setIntersectionObserverEntry(entries[0]);
+      };
+
+      const observer = new IntersectionObserver(handler, options);
+      observer.observe(ref.current);
+
+      return () => {
+        if (ref.current) {
+          observer.disconnect();
+        }
+      };
+    }
+    return () => {};
+  }, [ref, options.threshold, options.root, options.rootMargin]);
+
+  return intersectionObserverEntry;
+};
+
+export default useIntersection;
diff --git a/yarn.lock b/yarn.lock
index 60fc2e3b3f..051f3791fc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1712,6 +1712,37 @@
     into-stream "^4.0.0"
     lodash "^4.17.4"
 
+"@shopify/async@^2.0.7":
+  version "2.0.7"
+  resolved "https://registry.yarnpkg.com/@shopify/async/-/async-2.0.7.tgz#944992bc1721df6c363b3f0f31be1dad0e75e929"
+  integrity sha512-wYGjqPhpna4ShYbUmlD2fPv5ZkjNlCZtU7huUU8/snnyPmdgL/Rn5M5FPP6Apr7/hU5RgqMj2tJFs37ORz/VaQ==
+
+"@shopify/decorators@^1.1.5":
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/@shopify/decorators/-/decorators-1.1.5.tgz#b8da0bd5fffb04cde9730898fc04428f964cab1c"
+  integrity sha512-cFAwd7T5IjkPs1ef11dbA6cbJA+CtgCDanbalPlQdl5ItwDzqJXGpvbhbQXw7zPyNMLijrgrpQqltalqAy9wnQ==
+  dependencies:
+    "@shopify/function-enhancers" "^1.0.5"
+
+"@shopify/function-enhancers@^1.0.5":
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/@shopify/function-enhancers/-/function-enhancers-1.0.5.tgz#7c3e516e26ce7a9b63c263679bdcf5121d994a10"
+  integrity sha512-34ML8DX4RmmA9hXDlf2BAz4SA37unShZxoBRPz585a+FaEzNcMvw5NzLD+Ih9XrP/wrxTUcN+p6pazvoS+jB7w==
+
+"@shopify/jest-dom-mocks@^2.8.2":
+  version "2.8.2"
+  resolved "https://registry.yarnpkg.com/@shopify/jest-dom-mocks/-/jest-dom-mocks-2.8.2.tgz#477c3159897807cc8d7797c33e8a79e787051779"
+  integrity sha512-4drt+S1cQ1ZSP1DaEHAj5XPPCiI2R8IIt+ZnH9h08Ngy8PjtjFFNHNcSJ6bKBmk7eO2c6+5UaJQzNcg56nt7gg==
+  dependencies:
+    "@shopify/async" "^2.0.7"
+    "@shopify/decorators" "^1.1.5"
+    "@types/fetch-mock" "^6.0.1"
+    "@types/lolex" "^2.1.3"
+    fetch-mock "^6.3.0"
+    lolex "^2.7.5"
+    promise "^8.0.3"
+    tslib "^1.9.3"
+
 "@storybook/addon-actions@5.1.11":
   version "5.1.11"
   resolved "https://registry.yarnpkg.com/@storybook/addon-actions/-/addon-actions-5.1.11.tgz#ebc299b9dfe476b5c65eb5d148c4b064f682ca08"
@@ -2219,6 +2250,11 @@
   resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
   integrity sha512-EaObqwIvayI5a8dCzhFrjKzVwKLxjoG9T6Ppd5CEo07LRKfQ8Yokw54r5+Wq7FaBQ+yXRvQAYPrHwya1/UFt9g==
 
+"@types/fetch-mock@^6.0.1":
+  version "6.0.5"
+  resolved "https://registry.yarnpkg.com/@types/fetch-mock/-/fetch-mock-6.0.5.tgz#acbc6771d43d7ebc1f0a8b7e3d57147618f8eacb"
+  integrity sha512-rV8O2j/TIi0PtFCOlK55JnfKpE8Hm6PKFgrUZY/3FNHw4uBEMHnM+5ZickDO1duOyKxbpY3VES5T4NIwZXvodA==
+
 "@types/glob@^7.1.1":
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/@types/glob/-/glob-7.1.1.tgz#aa59a1c6e3fbc421e07ccd31a944c30eba521575"
@@ -2260,6 +2296,11 @@
   dependencies:
     "@types/jest-diff" "*"
 
+"@types/lolex@^2.1.3":
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/@types/lolex/-/lolex-2.1.3.tgz#793557c9b8ad319b4c8e4c6548b90893f4aa5f69"
+  integrity sha512-nEipOLYyZJ4RKHCg7tlR37ewFy91oggmip2MBzPdVQ8QhTFqjcRhE8R0t4tfpDnSlxGWHoEGJl0UCC4kYhqoiw==
+
 "@types/minimatch@*":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
@@ -2857,7 +2898,7 @@ arrify@^1.0.1:
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
   integrity sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=
 
-asap@^2.0.0, asap@~2.0.3:
+asap@^2.0.0, asap@~2.0.3, asap@~2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
   integrity sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY=
@@ -3317,6 +3358,15 @@ babel-plugin-transform-undefined-to-void@^6.9.4:
   resolved "https://registry.yarnpkg.com/babel-plugin-transform-undefined-to-void/-/babel-plugin-transform-undefined-to-void-6.9.4.tgz#be241ca81404030678b748717322b89d0c8fe280"
   integrity sha1-viQcqBQEAwZ4t0hxcyK4nQyP4oA=
 
+babel-polyfill@^6.26.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-polyfill/-/babel-polyfill-6.26.0.tgz#379937abc67d7895970adc621f284cd966cf2153"
+  integrity sha1-N5k3q8Z9eJWXCtxiHyhM2WbPIVM=
+  dependencies:
+    babel-runtime "^6.26.0"
+    core-js "^2.5.0"
+    regenerator-runtime "^0.10.5"
+
 babel-preset-jest@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-24.9.0.tgz#192b521e2217fb1d1f67cf73f70c336650ad3cdc"
@@ -5644,6 +5694,15 @@ fbjs@^0.8.0, fbjs@^0.8.1:
     setimmediate "^1.0.5"
     ua-parser-js "^0.7.18"
 
+fetch-mock@^6.3.0:
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/fetch-mock/-/fetch-mock-6.5.2.tgz#b3842b305c13ea0f81c85919cfaa7de387adfa3e"
+  integrity sha512-EIvbpCLBTYyDLu4HJiqD7wC8psDwTUaPaWXNKZbhNO/peUYKiNp5PkZGKRJtnTxaPQu71ivqafvjpM7aL+MofQ==
+  dependencies:
+    babel-polyfill "^6.26.0"
+    glob-to-regexp "^0.4.0"
+    path-to-regexp "^2.2.1"
+
 figgy-pudding@^3.4.1, figgy-pudding@^3.5.1:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/figgy-pudding/-/figgy-pudding-3.5.1.tgz#862470112901c727a0e495a80744bd5baa1d6790"
@@ -6145,6 +6204,11 @@ glob-to-regexp@^0.3.0:
   resolved "https://registry.yarnpkg.com/glob-to-regexp/-/glob-to-regexp-0.3.0.tgz#8c5a1494d2066c570cc3bfe4496175acc4d502ab"
   integrity sha1-jFoUlNIGbFcMw7/kSWF1rMTVAqs=
 
+glob-to-regexp@^0.4.0:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/glob-to-regexp/-/glob-to-regexp-0.4.1.tgz#c75297087c851b9a578bd217dd59a92f59fe546e"
+  integrity sha512-lkX1HJXwyMcprw/5YUZc2s7DrpAiHB21/V+E1rHUrVNokkvB6bqMzT0VfV6/86ZNabt1k14YOIaT7nDvOX3Iiw==
+
 glob@^7.0.0, glob@^7.0.3, glob@^7.1.1, glob@^7.1.2, glob@^7.1.3, glob@^7.1.4:
   version "7.1.4"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.4.tgz#aa608a2f6c577ad357e1ae5a5c26d9a8d1969255"
@@ -8300,6 +8364,11 @@ log-update@^2.3.0:
     cli-cursor "^2.0.0"
     wrap-ansi "^3.0.1"
 
+lolex@^2.7.5:
+  version "2.7.5"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.7.5.tgz#113001d56bfc7e02d56e36291cc5c413d1aa0733"
+  integrity sha512-l9x0+1offnKKIzYVjyXU2SiwhXDLekRzKyhnbyldPHvC7BvLPVpdNUNR2KeMAiCN2D/kLNttZgQD5WjSxuBx3Q==
+
 loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
@@ -9776,6 +9845,11 @@ path-to-regexp@0.1.7:
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
   integrity sha1-32BBeABfUi8V60SQ5yR6G/qmf4w=
 
+path-to-regexp@^2.2.1:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-2.4.0.tgz#35ce7f333d5616f1c1e1bfe266c3aba2e5b2e704"
+  integrity sha512-G6zHoVqC6GGTQkZwF4lkuEyMbVOjoBKAEybQUypI1WTkqinCOrq2x6U2+phkJ1XsEMTy4LjtwPI7HW+NVrRR2w==
+
 path-type@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-3.0.0.tgz#cef31dc8e0a1a3bb0d105c0cd97cf3bf47f4e36f"
@@ -10096,6 +10170,13 @@ promise@^7.1.1:
   dependencies:
     asap "~2.0.3"
 
+promise@^8.0.3:
+  version "8.0.3"
+  resolved "https://registry.yarnpkg.com/promise/-/promise-8.0.3.tgz#f592e099c6cddc000d538ee7283bb190452b0bf6"
+  integrity sha512-HeRDUL1RJiLhyA0/grn+PTShlBAcLuh/1BJGtrvjwbvRDCTLLMEz9rOGCV+R3vHY4MixIuoMEd9Yq/XvsTPcjw==
+  dependencies:
+    asap "~2.0.6"
+
 prompts@^2.0.1:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/prompts/-/prompts-2.0.4.tgz#179f9d4db3128b9933aa35f93a800d8fce76a682"
@@ -10892,6 +10973,11 @@ regenerate@^1.4.0:
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.0.tgz#4a856ec4b56e4077c557589cae85e7a4c8869a11"
   integrity sha512-1G6jJVDWrt0rK99kBjvEtziZNCICAuvIPkSiUFIQxVP06RCVpq3dmDo2oi6ABpYaDYaTRr67BEhL8r1wgEZZKg==
 
+regenerator-runtime@^0.10.5:
+  version "0.10.5"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz#336c3efc1220adcedda2c9fab67b5a7955a33658"
+  integrity sha1-M2w+/BIgrc7dosn6tntaeVWjNlg=
+
 regenerator-runtime@^0.11.0:
   version "0.11.1"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
@@ -12506,6 +12592,11 @@ tslib@1.9.0, tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.0.tgz#e37a86fda8cbbaf23a057f473c9f4dc64e5fc2e8"
   integrity sha512-f/qGG2tUkrISBlQZEjEqoZ3B2+npJjIf04H1wuAv9iA8i04Icp+61KRXxFdha22670NJopsZCIjhC3SnjPRKrQ==
 
+tslib@^1.9.3:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
+  integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
+
 tslint-config-prettier@1.18.0:
   version "1.18.0"
   resolved "https://registry.yarnpkg.com/tslint-config-prettier/-/tslint-config-prettier-1.18.0.tgz#75f140bde947d35d8f0d238e0ebf809d64592c37"