diff --git a/webui/src/Author.js b/webui/src/Author.tsx
similarity index 72%
rename from webui/src/Author.js
rename to webui/src/Author.tsx
index 7bb1bf3c..475244db 100644
--- a/webui/src/Author.js
+++ b/webui/src/Author.tsx
@@ -2,7 +2,10 @@ import Tooltip from '@material-ui/core/Tooltip/Tooltip';
 import MAvatar from '@material-ui/core/Avatar';
 import React from 'react';
 
-const Author = ({ author, ...props }) => {
+import { AuthoredFragment } from './Author.generated';
+
+type Props = AuthoredFragment;
+const Author = ({ author, ...props }: Props) => {
   if (!author.email) {
     return <span {...props}>{author.displayName}</span>;
   }
@@ -14,7 +17,7 @@ const Author = ({ author, ...props }) => {
   );
 };
 
-export const Avatar = ({ author, ...props }) => {
+export const Avatar = ({ author, ...props }: Props) => {
   if (author.avatarUrl) {
     return <MAvatar src={author.avatarUrl} {...props} />;
   }
diff --git a/webui/src/Content.js b/webui/src/Content.tsx
similarity index 67%
rename from webui/src/Content.js
rename to webui/src/Content.tsx
index 3a6900bc..9683f478 100644
--- a/webui/src/Content.js
+++ b/webui/src/Content.tsx
@@ -2,10 +2,12 @@ import unified from 'unified';
 import parse from 'remark-parse';
 import html from 'remark-html';
 import remark2react from 'remark-react';
+import { ReactNode } from 'react';
 import ImageTag from './tag/ImageTag';
 import PreTag from './tag/PreTag';
 
-const Content = ({ markdown }) => {
+type Props = { markdown: string };
+const Content = ({ markdown }: Props) => {
   const processor = unified()
     .use(parse)
     .use(html)
@@ -16,7 +18,8 @@ const Content = ({ markdown }) => {
       },
     });
 
-  return processor.processSync(markdown).contents;
+  const contents: ReactNode = processor.processSync(markdown).contents;
+  return contents;
 };
 
 export default Content;
diff --git a/webui/src/CurrentIdentity.graphql b/webui/src/CurrentIdentity.graphql
new file mode 100644
index 00000000..6c000a2e
--- /dev/null
+++ b/webui/src/CurrentIdentity.graphql
@@ -0,0 +1,8 @@
+query CurrentIdentity {
+  defaultRepository {
+    userIdentity {
+      displayName
+      avatarUrl
+    }
+  }
+}
diff --git a/webui/src/CurrentIdentity.js b/webui/src/CurrentIdentity.js
deleted file mode 100644
index 451979fb..00000000
--- a/webui/src/CurrentIdentity.js
+++ /dev/null
@@ -1,45 +0,0 @@
-import React from 'react';
-import gql from 'graphql-tag';
-import { Query } from 'react-apollo';
-import Avatar from '@material-ui/core/Avatar';
-import { makeStyles } from '@material-ui/styles';
-
-const useStyles = makeStyles(theme => ({
-  displayName: {
-    marginLeft: theme.spacing(2),
-  },
-}));
-
-const QUERY = gql`
-  {
-    defaultRepository {
-      userIdentity {
-        displayName
-        avatarUrl
-      }
-    }
-  }
-`;
-
-const CurrentIdentity = () => {
-  const classes = useStyles();
-  return (
-    <Query query={QUERY}>
-      {({ loading, error, data }) => {
-        if (error || loading || !data.defaultRepository.userIdentity)
-          return null;
-        const user = data.defaultRepository.userIdentity;
-        return (
-          <>
-            <Avatar src={user.avatarUrl}>
-              {user.displayName.charAt(0).toUpperCase()}
-            </Avatar>
-            <div className={classes.displayName}>{user.displayName}</div>
-          </>
-        );
-      }}
-    </Query>
-  );
-};
-
-export default CurrentIdentity;
diff --git a/webui/src/CurrentIdentity.tsx b/webui/src/CurrentIdentity.tsx
new file mode 100644
index 00000000..0a697cdd
--- /dev/null
+++ b/webui/src/CurrentIdentity.tsx
@@ -0,0 +1,31 @@
+import React from 'react';
+import Avatar from '@material-ui/core/Avatar';
+import { makeStyles } from '@material-ui/core/styles';
+
+import { useCurrentIdentityQuery } from './CurrentIdentity.generated';
+
+const useStyles = makeStyles(theme => ({
+  displayName: {
+    marginLeft: theme.spacing(2),
+  },
+}));
+
+const CurrentIdentity = () => {
+  const classes = useStyles();
+  const { loading, error, data } = useCurrentIdentityQuery();
+
+  if (error || loading || !data?.defaultRepository?.userIdentity)
+    return null;
+
+  const user = data.defaultRepository.userIdentity;
+  return (
+    <>
+      <Avatar src={user.avatarUrl ? user.avatarUrl : undefined}>
+        {user.displayName.charAt(0).toUpperCase()}
+      </Avatar>
+      <div className={classes.displayName}>{user.displayName}</div>
+    </>
+  );
+};
+
+export default CurrentIdentity;
diff --git a/webui/src/Date.js b/webui/src/Date.tsx
similarity index 70%
rename from webui/src/Date.js
rename to webui/src/Date.tsx
index 46741924..9380d2fc 100644
--- a/webui/src/Date.js
+++ b/webui/src/Date.tsx
@@ -1,8 +1,9 @@
 import Tooltip from '@material-ui/core/Tooltip/Tooltip';
-import * as moment from 'moment';
+import moment from 'moment';
 import React from 'react';
 
-const Date = ({ date }) => (
+type Props = { date: string };
+const Date = ({ date }: Props) => (
   <Tooltip title={moment(date).format('MMMM D, YYYY, h:mm a')}>
     <span> {moment(date).fromNow()} </span>
   </Tooltip>
diff --git a/webui/src/Label.js b/webui/src/Label.tsx
similarity index 73%
rename from webui/src/Label.js
rename to webui/src/Label.tsx
index fdb8ed4d..e200f929 100644
--- a/webui/src/Label.js
+++ b/webui/src/Label.tsx
@@ -1,24 +1,27 @@
 import React from 'react';
-import { makeStyles } from '@material-ui/styles';
+import { makeStyles } from '@material-ui/core/styles';
 import {
   getContrastRatio,
   darken,
 } from '@material-ui/core/styles/colorManipulator';
 import { common } from '@material-ui/core/colors';
 
+import { Color } from './gqlTypes';
+import { LabelFragment } from './Label.generated';
+
 // Minimum contrast between the background and the text color
 const contrastThreshold = 2.5;
 
 // Guess the text color based on the background color
-const getTextColor = background =>
+const getTextColor = (background: string) =>
   getContrastRatio(background, common.white) >= contrastThreshold
     ? common.white // White on dark backgrounds
     : common.black; // And black on light ones
 
-const _rgb = color => 'rgb(' + color.R + ',' + color.G + ',' + color.B + ')';
+const _rgb = (color: Color) => 'rgb(' + color.R + ',' + color.G + ',' + color.B + ')';
 
 // Create a style object from the label RGB colors
-const createStyle = color => ({
+const createStyle = (color: Color) => ({
   backgroundColor: _rgb(color),
   color: getTextColor(_rgb(color)),
   borderBottomColor: darken(_rgb(color), 0.2),
@@ -29,7 +32,7 @@ const useStyles = makeStyles(theme => ({
     ...theme.typography.body1,
     padding: '1px 6px 0.5px',
     fontSize: '0.9em',
-    fontWeight: '500',
+    fontWeight: 500,
     margin: '0.05em 1px calc(-1.5px + 0.05em)',
     borderRadius: '3px',
     display: 'inline-block',
@@ -38,7 +41,8 @@ const useStyles = makeStyles(theme => ({
   },
 }));
 
-function Label({ label }) {
+type Props = { label: LabelFragment };
+function Label({ label }: Props) {
   const classes = useStyles();
   return (
     <span className={classes.label} style={createStyle(label.color)}>
diff --git a/webui/tsconfig.json b/webui/tsconfig.json
index f2850b71..705bae44 100644
--- a/webui/tsconfig.json
+++ b/webui/tsconfig.json
@@ -17,7 +17,11 @@
     "resolveJsonModule": true,
     "isolatedModules": true,
     "noEmit": true,
-    "jsx": "react"
+    "jsx": "react",
+    "typeRoots": [
+      "node_modules/@types/",
+      "types/"
+    ]
   },
   "include": [
     "src"
diff --git a/webui/types/remark-html/index.d.ts b/webui/types/remark-html/index.d.ts
new file mode 100644
index 00000000..6b6e7ef7
--- /dev/null
+++ b/webui/types/remark-html/index.d.ts
@@ -0,0 +1,6 @@
+declare module "remark-html" {
+  import { Plugin } from 'unified';
+
+  const plugin: Plugin;
+  export default plugin;
+};
diff --git a/webui/types/remark-react/index.d.ts b/webui/types/remark-react/index.d.ts
new file mode 100644
index 00000000..aa5e6bcb
--- /dev/null
+++ b/webui/types/remark-react/index.d.ts
@@ -0,0 +1,6 @@
+declare module "remark-react" {
+  import { Plugin } from 'unified';
+
+  const plugin: Plugin;
+  export default plugin;
+};