diff --git a/package.json b/package.json
index 45fe159..91094d4 100644
--- a/package.json
+++ b/package.json
@@ -5,9 +5,11 @@
   "dependencies": {
     "@types/jest": "24.0.11",
     "@types/node": "11.12.2",
+    "@types/rc-tree": "^1.11.3",
     "@types/react": "16.8.10",
     "@types/react-dom": "16.8.3",
     "@types/react-router-dom": "^4.3.1",
+    "rc-tree": "^1.15.2",
     "react": "^16.8.6",
     "react-dom": "^16.8.6",
     "react-router-dom": "^5.0.0",
diff --git a/src/assets/images/theme/tree-leaf1.gif b/src/assets/images/theme/tree-leaf1.gif
new file mode 100644
index 0000000..ac34c41
Binary files /dev/null and b/src/assets/images/theme/tree-leaf1.gif differ
diff --git a/src/assets/images/theme/tree-leaf2.gif b/src/assets/images/theme/tree-leaf2.gif
new file mode 100644
index 0000000..6408cf1
Binary files /dev/null and b/src/assets/images/theme/tree-leaf2.gif differ
diff --git a/src/assets/images/theme/tree-line.gif b/src/assets/images/theme/tree-line.gif
new file mode 100644
index 0000000..aab1527
Binary files /dev/null and b/src/assets/images/theme/tree-line.gif differ
diff --git a/src/assets/images/theme/tree-parent1.gif b/src/assets/images/theme/tree-parent1.gif
new file mode 100644
index 0000000..ac2389d
Binary files /dev/null and b/src/assets/images/theme/tree-parent1.gif differ
diff --git a/src/assets/images/theme/tree-parent2.gif b/src/assets/images/theme/tree-parent2.gif
new file mode 100644
index 0000000..d35fc5a
Binary files /dev/null and b/src/assets/images/theme/tree-parent2.gif differ
diff --git a/src/assets/images/theme/tree-root.gif b/src/assets/images/theme/tree-root.gif
new file mode 100644
index 0000000..960a061
Binary files /dev/null and b/src/assets/images/theme/tree-root.gif differ
diff --git a/src/assets/tree.json b/src/assets/tree.json
new file mode 100644
index 0000000..0a9447d
--- /dev/null
+++ b/src/assets/tree.json
@@ -0,0 +1 @@
+{"index_id":"3","title":"Public","num_items":"32","child_indexes":[{"index_id":"6","title":"Pupil Colloquium","num_items":"0","child_indexes":[{"index_id":"216","title":"2007, Hamamatsu","num_items":"48","child_indexes":[]},{"index_id":"7","title":"2005, Bear Mountain","num_items":"113","child_indexes":[]},{"index_id":"81","title":"2003, Crete","num_items":"123","child_indexes":[]},{"index_id":"8","title":"2001, Asilomar","num_items":"128","child_indexes":[]},{"index_id":"82","title":"1999, Nottingham","num_items":"96","child_indexes":[]},{"index_id":"217","title":"1997, Point Clear","num_items":"93","child_indexes":[]}]}]}
\ No newline at end of file
diff --git a/src/components/IndexTreeBlock.module.css b/src/components/IndexTreeBlock.module.css
new file mode 100644
index 0000000..eeb0acf
--- /dev/null
+++ b/src/components/IndexTreeBlock.module.css
@@ -0,0 +1,62 @@
+.indexTree {
+    border-top: 1px solid #9ab5cf;
+    border-left: 1px solid #9ab5cf;
+    border-bottom: 1px solid #404040;
+    border-right: 1px solid #404040;
+    background-color: white;
+    height: 250px;
+    width: 175px;
+    overflow: auto;
+}
+
+.formButton {
+    margin: 3px 3px 10px;
+}
+
+.indexTree li span {
+    color: blue;
+    font-size: 12px;
+    font-weight: bold;
+}
+
+.indexTree li span:hover {
+    color: #ff9900;
+}
+
+.indexTree:global(.rc-tree li ul) {
+    padding: 0 0 0 10px;
+}
+
+.indexTree:global(.rc-tree li span.rc-tree-switcher) {
+    height: 19px;
+    width: 21px;
+}
+
+.indexTree:global(.rc-tree > li:first-child > span.rc-tree-switcher.rc-tree-switcher_open), .indexTree:global(.rc-tree > li:first-child > span.rc-tree-switcher.rc-tree-switcher_close) {
+    background: url(../assets/images/theme/tree-root.gif);
+    width: 14px;
+}
+
+.indexTree:global(.rc-tree > li:first-child > ul) {
+    padding: 0 0 0 7px;
+}
+
+.indexTree:global(.rc-tree li:not(:last-child) ul.rc-tree-child-tree.rc-tree-child-tree-open) {
+    background: url(../assets/images/theme/tree-line.gif) repeat-y;
+}
+
+.indexTree:global(.rc-tree li:not(:last-child) > span.rc-tree-switcher-noop) {
+    background: url(../assets/images/theme/tree-leaf1.gif)
+}
+
+.indexTree:global(.rc-tree li:last-child > span.rc-tree-switcher-noop) {
+    background: url(../assets/images/theme/tree-leaf2.gif)
+}
+
+.indexTree:global(.rc-tree li:not(:last-child) > span.rc-tree-switcher_open), .indexTree:global(.rc-tree li:not(:last-child) > span.rc-tree-switcher_close) {
+    background: url(../assets/images/theme/tree-parent1.gif)
+}
+
+.indexTree:global(.rc-tree li:last-child > span.rc-tree-switcher_open), .indexTree:global(.rc-tree li:last-child > span.rc-tree-switcher_close) {
+    background: url(../assets/images/theme/tree-parent2.gif)
+}
\ No newline at end of file
diff --git a/src/components/IndexTreeBlock.tsx b/src/components/IndexTreeBlock.tsx
new file mode 100644
index 0000000..41b836a
--- /dev/null
+++ b/src/components/IndexTreeBlock.tsx
@@ -0,0 +1,104 @@
+import React, { Component } from 'react';
+import { RouteComponentProps, StaticContext, withRouter } from 'react-router';
+import Tree, { TreeNode, InternalTreeNodeProps, ExpandData, SelectData } from 'rc-tree';
+import styles from './IndexTreeBlock.module.css';
+import 'rc-tree/assets/index.css';
+
+import treeJson from '../assets/tree.json';
+
+interface IProps extends RouteComponentProps<{}, StaticContext, any> { }
+
+interface IState {
+    expandableKeys?: string[];
+    treeElement?: JSX.Element[];
+    expandedKeys?: string[];
+    selectedKeys?: string[];
+}
+
+interface ITreeJson {
+    index_id: string;
+    title: string;
+    num_items: string;
+    child_indexes: ITreeJson[];
+}
+
+class IndexTreeBlock extends Component<IProps, IState> {
+
+    public state: IState = {
+        treeElement: [],
+        expandedKeys: [],
+        selectedKeys: []
+    };
+
+    constructor(props: IProps) {
+        super(props);
+        this.handleClickOpenAll = this.handleClickOpenAll.bind(this);
+        this.handleClickCloseAll = this.handleClickCloseAll.bind(this);
+        this.handleExpand = this.handleExpand.bind(this);
+        this.handleSelect = this.handleSelect.bind(this);
+    }
+
+    handleClickOpenAll() {
+        this.setState({ expandedKeys: this.state.expandableKeys })
+    }
+
+    handleClickCloseAll() {
+        this.setState({ expandedKeys: [] })
+    }
+
+    handleExpand(expandedKeys: string[], e: ExpandData): void {
+        this.setState({ expandedKeys });
+    }
+
+    handleSelect(selectedKeys: string[], e: SelectData): void {
+        const url = '/database/list/' + e.node.props.eventKey;
+        this.props.history.push(url);
+        this.setState({ selectedKeys: [] });
+    }
+
+    componentDidMount() {
+        this.loadTreeData();
+    }
+
+    loadTreeData() {
+        const expandedKeys: string[] = [];
+        const loop = (data: ITreeJson[]) => {
+            return data.map((item: ITreeJson) => {
+                let title: string = item.title;
+                if (parseInt(item.num_items) > 0) {
+                    title += ' (' + item.num_items + ')';
+                }
+                if (item.child_indexes.length > 0) {
+                    expandedKeys.push(item.index_id);
+                    return (
+                        <TreeNode key={item.index_id} title={title}>
+                            {loop(item.child_indexes)}
+                        </TreeNode >
+                    );
+                }
+                return (<TreeNode key={item.index_id} title={title} />);
+            });
+        };
+        const data: ITreeJson[] = [treeJson];
+        const treeData: JSX.Element[] = loop(data);
+        this.setState({ treeElement: treeData });
+        this.setState({ expandedKeys: expandedKeys });
+        this.setState({ expandableKeys: expandedKeys });
+    }
+
+    render() {
+        return (
+            <div className={styles.container}>
+                <button className={styles.formButton} onClick={this.handleClickOpenAll}>open all</button>
+                <button className={styles.formButton} onClick={this.handleClickCloseAll}>close all</button>
+                <Tree className={styles.indexTree} expandedKeys={this.state.expandedKeys} selectedKeys={this.state.selectedKeys}
+                    onExpand={this.handleExpand} onSelect={this.handleSelect}
+                    showIcon={false}>
+                    {this.state.treeElement}
+                </Tree>
+            </div>
+        );
+    }
+}
+
+export default withRouter(IndexTreeBlock);
\ No newline at end of file
diff --git a/src/components/LeftColumn.tsx b/src/components/LeftColumn.tsx
index 2e37b27..1a395bb 100644
--- a/src/components/LeftColumn.tsx
+++ b/src/components/LeftColumn.tsx
@@ -3,6 +3,7 @@ import styles from './LeftColumn.module.css';
 
 import MainMenuBlock from './MainMenuBlock';
 import SearchBlock from './SearchBlock';
+import IndexTreeBlock from './IndexTreeBlock';
 
 class LeftColumn extends Component {
     render() {
@@ -23,7 +24,7 @@ class LeftColumn extends Component {
                 <div className={styles.leftBlock}>
                     <h2 className={styles.leftBlockTitle}>Index Tree</h2>
                     <div className={styles.leftBlockContent}>
-                        Index Tree
+                        <IndexTreeBlock />
                     </div>
                 </div>
             </td>
diff --git a/src/components/SearchBlock.tsx b/src/components/SearchBlock.tsx
index 0de8514..7780879 100644
--- a/src/components/SearchBlock.tsx
+++ b/src/components/SearchBlock.tsx
@@ -21,7 +21,6 @@ class SearchBlock extends Component<IProps, IState> {
         super(props);
         this.handleChange = this.handleChange.bind(this);
         this.handleSubmit = this.handleSubmit.bind(this);
-        console.log(props.location);
     }
 
     updateState(key: string, value: string) {
diff --git a/yarn.lock b/yarn.lock
index c80e330..422e568 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1014,6 +1014,13 @@
   resolved "https://registry.yarnpkg.com/@types/q/-/q-1.5.1.tgz#48fd98c1561fe718b61733daed46ff115b496e18"
   integrity sha512-eqz8c/0kwNi/OEHQfvIuJVLTst3in0e7uTKeuY+WL/zfKn0xVujOTp42bS/vUUokhK5P2BppLd9JXMOMHcgbjA==
 
+"@types/rc-tree@^1.11.3":
+  version "1.11.3"
+  resolved "https://registry.yarnpkg.com/@types/rc-tree/-/rc-tree-1.11.3.tgz#b40c096c54bab2a56b88de813af47b96e7e82b00"
+  integrity sha512-RxWXGy5PiR02TyZ1fNuqmBIeLylUOSIHLuWpnRswI18N2lpAqzXLaJhIctnGcn0OXjYss96EEJddL8tLFXuvNQ==
+  dependencies:
+    "@types/react" "*"
+
 "@types/react-dom@16.8.3":
   version "16.8.3"
   resolved "https://registry.yarnpkg.com/@types/react-dom/-/react-dom-16.8.3.tgz#6131b7b6158bc7ed1925a3374b88b7c00481f0cb"
@@ -1279,6 +1286,13 @@ acorn@^6.0.1, acorn@^6.0.7:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.1.1.tgz#7d25ae05bb8ad1f9b699108e1094ecd7884adc1f"
   integrity sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==
 
+add-dom-event-listener@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/add-dom-event-listener/-/add-dom-event-listener-1.1.0.tgz#6a92db3a0dd0abc254e095c0f1dc14acbbaae310"
+  integrity sha512-WCxx1ixHT0GQU9hb0KI/mhgRQhnU+U3GvwY6ZvVjYq8rsihIGoaIOUbY0yMPBxLH5MDtr0kz3fisWGNcbWW7Jw==
+  dependencies:
+    object-assign "4.x"
+
 address@1.0.3, address@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/address/-/address-1.0.3.tgz#b5f50631f8d6cec8bd20c963963afb55e06cbce9"
@@ -1794,7 +1808,7 @@ babel-register@^6.26.0:
     mkdirp "^0.5.1"
     source-map-support "^0.4.15"
 
-babel-runtime@^6.22.0, babel-runtime@^6.26.0:
+babel-runtime@6.x, babel-runtime@^6.22.0, babel-runtime@^6.23.0, babel-runtime@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz#965c7058668e82b55d7bfe04ff2337bc8b5647fe"
   integrity sha1-llxwWGaOgrVde/4E/yM3vItWR/4=
@@ -2341,6 +2355,11 @@ class-utils@^0.3.5:
     isobject "^3.0.0"
     static-extend "^0.1.1"
 
+classnames@2.x, classnames@^2.2.5:
+  version "2.2.6"
+  resolved "https://registry.yarnpkg.com/classnames/-/classnames-2.2.6.tgz#43935bffdd291f326dad0a205309b38d00f650ce"
+  integrity sha512-JR/iSQOSt+LQIWwrwEzJ9uk0xfN3mTVYMwt1Ir5mUcSN6pU+V4zQFFaJsclJbPuAUQH+yfWef6tm7l1quW3C8Q==
+
 clean-css@4.2.x:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/clean-css/-/clean-css-4.2.1.tgz#2d411ef76b8569b6d0c84068dabe85b0aa5e5c17"
@@ -2484,11 +2503,23 @@ commondir@^1.0.1:
   resolved "https://registry.yarnpkg.com/commondir/-/commondir-1.0.1.tgz#ddd800da0c66127393cca5950ea968a3aaf1253b"
   integrity sha1-3dgA2gxmEnOTzKWVDqloo6rxJTs=
 
+component-classes@^1.2.6:
+  version "1.2.6"
+  resolved "https://registry.yarnpkg.com/component-classes/-/component-classes-1.2.6.tgz#c642394c3618a4d8b0b8919efccbbd930e5cd691"
+  integrity sha1-xkI5TDYYpNiwuJGe/Mu9kw5c1pE=
+  dependencies:
+    component-indexof "0.0.3"
+
 component-emitter@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
   integrity sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=
 
+component-indexof@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/component-indexof/-/component-indexof-0.0.3.tgz#11d091312239eb8f32c8f25ae9cb002ffe8d3c24"
+  integrity sha1-EdCRMSI5648yyPJa6csAL/6NPCQ=
+
 compressible@~2.0.14:
   version "2.0.16"
   resolved "https://registry.yarnpkg.com/compressible/-/compressible-2.0.16.tgz#a49bf9858f3821b64ce1be0296afc7380466a77f"
@@ -3885,7 +3916,7 @@ fb-watchman@^2.0.0:
   dependencies:
     bser "^2.0.0"
 
-fbjs@^0.8.0:
+fbjs@^0.8.0, fbjs@^0.8.16:
   version "0.8.17"
   resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.17.tgz#c4d598ead6949112653d6588b01a5cdcd9f90fdd"
   integrity sha1-xNWY6taUkRJlPWWIsBpc3Nn5D90=
@@ -6005,6 +6036,11 @@ locate-path@^3.0.0:
     p-locate "^3.0.0"
     path-exists "^3.0.0"
 
+lodash._getnative@^3.0.0:
+  version "3.9.1"
+  resolved "https://registry.yarnpkg.com/lodash._getnative/-/lodash._getnative-3.9.1.tgz#570bc7dede46d61cdcde687d65d3eecbaa3aaff5"
+  integrity sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U=
+
 lodash._reinterpolate@~3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/lodash._reinterpolate/-/lodash._reinterpolate-3.0.0.tgz#0ccf2d89166af03b3663c796538b75ac6e114d9d"
@@ -6020,6 +6056,25 @@ lodash.get@^4.4.2:
   resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
   integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
 
+lodash.isarguments@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz#2f573d85c6a24289ff00663b491c1d338ff3458a"
+  integrity sha1-L1c9hcaiQon/AGY7SRwdM4/zRYo=
+
+lodash.isarray@^3.0.0:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/lodash.isarray/-/lodash.isarray-3.0.4.tgz#79e4eb88c36a8122af86f844aa9bcd851b5fbb55"
+  integrity sha1-eeTriMNqgSKvhvhEqpvNhRtfu1U=
+
+lodash.keys@^3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/lodash.keys/-/lodash.keys-3.1.2.tgz#4dbc0472b156be50a0b286855d1bd0b0c656098a"
+  integrity sha1-TbwEcrFWvlCgsoaFXRvQsMZWCYo=
+  dependencies:
+    lodash._getnative "^3.0.0"
+    lodash.isarguments "^3.0.0"
+    lodash.isarray "^3.0.0"
+
 lodash.memoize@^4.1.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
@@ -6653,7 +6708,7 @@ oauth-sign@~0.9.0:
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
   integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
 
-object-assign@4.1.1, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@4.1.1, object-assign@4.x, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
@@ -7874,7 +7929,7 @@ prompts@^0.1.9:
     kleur "^2.0.1"
     sisteransi "^0.1.1"
 
-prop-types@^15.6.2:
+prop-types@15.x, prop-types@^15.5.10, prop-types@^15.5.8, prop-types@^15.6.2:
   version "15.7.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
   integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
@@ -7990,7 +8045,7 @@ querystringify@^2.0.0:
   resolved "https://registry.yarnpkg.com/querystringify/-/querystringify-2.1.0.tgz#7ded8dfbf7879dcc60d0a644ac6754b283ad17ef"
   integrity sha512-sluvZZ1YiTLD5jsqZcDmFyV2EwToyXZBfpoVOmktMmW+VEnhgakFHnasVph65fOjGPTWN0Nw3+XQaSeMayr0kg==
 
-raf@3.4.1:
+raf@3.4.1, raf@^3.4.0:
   version "3.4.1"
   resolved "https://registry.yarnpkg.com/raf/-/raf-3.4.1.tgz#0742e99a4a6552f445d73e3ee0328af0ff1ede39"
   integrity sha512-Sq4CW4QhwOHE8ucn6J34MqtZCeWFP2aQSmrlroYgqAV1PjStIhJXxYuTgUIfkEk7zTLjmIjLmU5q+fbD1NnOJA==
@@ -8036,6 +8091,43 @@ raw-body@2.3.3:
     iconv-lite "0.4.23"
     unpipe "1.0.0"
 
+rc-animate@^3.0.0-rc.5:
+  version "3.0.0-rc.6"
+  resolved "https://registry.yarnpkg.com/rc-animate/-/rc-animate-3.0.0-rc.6.tgz#04288eefa118e0cae214536c8a903ffaac1bc3fb"
+  integrity sha512-oBLPpiT6Q4t6YvD/pkLcmofBP1p01TX0Otse8Q4+Mxt8J+VSDflLZGIgf62EwkvRwsQUkLPjZVFBsldnPKLzjg==
+  dependencies:
+    babel-runtime "6.x"
+    classnames "^2.2.5"
+    component-classes "^1.2.6"
+    fbjs "^0.8.16"
+    prop-types "15.x"
+    raf "^3.4.0"
+    rc-util "^4.5.0"
+    react-lifecycles-compat "^3.0.4"
+
+rc-tree@^1.15.2:
+  version "1.15.2"
+  resolved "https://registry.yarnpkg.com/rc-tree/-/rc-tree-1.15.2.tgz#a0d6f20fa2bdbe51d829d5ceea74a407b04bfea9"
+  integrity sha512-VPXLA/GdV6U9N8evpl4rmjRsBkw5BoweqWjcVBVwYGzBtonNIFpdc+bnb7TDmd6S3mKOM7mXPbiSr2GKYdj4hA==
+  dependencies:
+    babel-runtime "^6.23.0"
+    classnames "2.x"
+    prop-types "^15.5.8"
+    rc-animate "^3.0.0-rc.5"
+    rc-util "^4.5.1"
+    react-lifecycles-compat "^3.0.4"
+    warning "^3.0.0"
+
+rc-util@^4.5.0, rc-util@^4.5.1:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/rc-util/-/rc-util-4.6.0.tgz#ba33721783192ec4f3afb259e182b04e55deb7f6"
+  integrity sha512-rbgrzm1/i8mgfwOI4t1CwWK7wGe+OwX+dNa7PVMgxZYPBADGh86eD4OcJO1UKGeajIMDUUKMluaZxvgraQIOmw==
+  dependencies:
+    add-dom-event-listener "^1.1.0"
+    babel-runtime "6.x"
+    prop-types "^15.5.10"
+    shallowequal "^0.2.2"
+
 rc@^1.2.7:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
@@ -8113,6 +8205,11 @@ react-is@^16.8.1:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.8.4.tgz#90f336a68c3a29a096a3d648ab80e87ec61482a2"
   integrity sha512-PVadd+WaUDOAciICm/J1waJaSvgq+4rHE/K70j0PFqKhkTBsPv/82UGQJNXAngz1fOQLLxI6z1sEDmJDQhCTAA==
 
+react-lifecycles-compat@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"
+  integrity sha512-fBASbA6LnOU9dOU2eW7aQ8xmYBSXUIWr+UmF9b1efZBazGNO+rcXT/icdKnYm2pTwcRylVUYwW7H1PHfLekVzA==
+
 react-router-dom@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-5.0.0.tgz#542a9b86af269a37f0b87218c4c25ea8dcf0c073"
@@ -8807,6 +8904,13 @@ shallow-clone@^1.0.0:
     kind-of "^5.0.0"
     mixin-object "^2.0.1"
 
+shallowequal@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/shallowequal/-/shallowequal-0.2.2.tgz#1e32fd5bcab6ad688a4812cb0cc04efc75c7014e"
+  integrity sha1-HjL9W8q2rWiKSBLLDMBO/HXHAU4=
+  dependencies:
+    lodash.keys "^3.1.2"
+
 shebang-command@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
@@ -9858,6 +9962,13 @@ walker@~1.0.5:
   dependencies:
     makeerror "1.0.x"
 
+warning@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/warning/-/warning-3.0.0.tgz#32e5377cb572de4ab04753bdf8821c01ed605b7c"
+  integrity sha1-MuU3fLVy3kqwR1O9+IIcAe1gW3w=
+  dependencies:
+    loose-envify "^1.0.0"
+
 watch@~0.18.0:
   version "0.18.0"
   resolved "https://registry.yarnpkg.com/watch/-/watch-0.18.0.tgz#28095476c6df7c90c963138990c0a5423eb4b986"