Update dependencies

.snyk

@@ -1,6 +1,3 @@
 version: v1.5.0
 ignore: {}
-patch:
-  'npm:marked:20150520':
-    - marked:
-        patched: '2016-07-25T01:12:09.411Z'
+patch: {}

CONTRIBUTING.md

@@ -44,6 +44,13 @@ In one terminal, have jsPerf running (`npm start`). In another, have webdriver-m
 SELENIUM_SERVER=http://127.0.0.1:4444/wd/hub npm run test-e2e
 ```
 
+### Known Globals
+
+Lab detects global variable leaks. Sometimes downstream dependencies make this unavoidable so we ignore specific variables in the `lab` command for `npm test` (`package.json#scripts.test`). Here are the known globals with explanations:
+
+- `__core-js_shared__` stems from `core-js`?
+- `__grim__` stems from `grim`, a dependency of `marky-markdown` (`npm ls grim`)
+
 ## Adding new dependencies
 
 Install using `npm` and either `--save` or `--save-dev`. **Do not edit `package.json` manually.**

config.js

@@ -37,7 +37,7 @@ const envSchema = Joi.object().keys({
 const result = Joi.validate(process.env, envSchema);
 
 if (result.error) {
-  throw new Error(`${result.error.details[0].path} environment variable is missing`);
+  throw new Error(`${result.error.details[0].path[0]} environment variable is missing`);
 }
 
 var Confidence = require('confidence');