Add Preact and supporting libraries to the build

 - Add Preact dependency
 - Enable use of JSX in the linter and during transpilation, configured
   to work with Preact.
 - Enable the ESLint React plugin, configured to work with Preact.

.babelrc

 {
   "presets": [
+    ["@babel/preset-react", {
+      "pragma": "createElement"
+    }],
     ["@babel/preset-env", {
        "targets": {
          "browsers": ["> 0.3%"]

.eslintrc

 {
-  "extends": "hypothesis",
+  "extends": [
+    "hypothesis",
+    "plugin:react/recommended"
+  ],
   "globals": {
     "Set": false
   },
@@ -9,9 +12,19 @@
     "indent": "off"
   },
   "parserOptions": {
-    "ecmaVersion": 2018
+    "ecmaVersion": 2018,
+    "ecmaFeatures": {
+      "jsx": true
+    }
   },
   "plugins": [
-    "mocha"
+    "mocha",
+    "react"
   ],
+  "settings": {
+    "react": {
+      "pragma": "createElement",
+      "version": "16.8"
+    }
+  }
 }

package.json

@@ -9,6 +9,7 @@
   "devDependencies": {
     "@babel/core": "^7.1.6",
     "@babel/preset-env": "^7.1.6",
+    "@babel/preset-react": "^7.0.0",
     "@octokit/rest": "^16.9.0",
     "angular": "^1.7.5",
     "angular-mocks": "^1.7.5",
@@ -49,6 +50,7 @@
     "eslint": "^5.12.1",
     "eslint-config-hypothesis": "^1.0.0",
     "eslint-plugin-mocha": "^5.2.1",
+    "eslint-plugin-react": "^7.12.4",
     "exorcist": "^1.0.1",
     "express": "^4.14.1",
     "extend": "^3.0.2",
@@ -85,6 +87,7 @@
     "npm-packlist": "^1.1.12",
     "postcss": "^7.0.13",
     "postcss-url": "^8.0.0",
+    "preact": "10.0.0-alpha.2",
     "prettier": "1.16.4",
     "proxyquire": "^2.1.0",
     "proxyquire-universal": "^2.1.0",