Run tests in series with --runInBand (#429)

* Try runInBand

* Update readme

* Change when tests should actually run

* Remove --coverage flag

Author: jaredpalmer

.github/workflows/nodejs.yml

@@ -1,6 +1,8 @@
 name: Node CI
 
-on: [push, pull_request]
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
 
 jobs:
   lint:
@@ -42,4 +44,4 @@ jobs:
         run: yarn install --frozen-lockfile
 
       - name: Test package
-        run: yarn test
+        run: yarn test --runInBand

README.md

@@ -35,6 +35,7 @@ Despite all the recent hype, setting up a new TypeScript (x React) library can b
   - [`tsdx build`](#tsdx-build)
   - [`tsdx test`](#tsdx-test)
   - [`tsdx lint`](#tsdx-lint)
+- [Contributing](#contributing)
 - [Author](#author)
 - [License](#license)
 - [Contributors ✨](#contributors-)