fix linting for top-level jest code

Author: lobsterkatie

.eslintrc.js

@@ -34,7 +34,7 @@ module.exports = {
       },
     },
     {
-      files: ['scripts/**/*.ts'],
+      files: ['jest/**/*.ts', 'scripts/**/*.ts'],
       parserOptions: {
         project: ['tsconfig.dev.json'],
       },

tsconfig.dev.json

@@ -2,5 +2,9 @@
 {
   "extends": "./tsconfig.json",
 
-  "include": ["**/scripts/**/*.ts"],
+  "include": ["**/scripts/**/*.ts", "jest/**/*.ts"],
+
+  "compilerOptions": {
+    "types": ["node", "jest"],
+  }
 }