Refactor and add tests (#17)

* Refactor and add tests

* Add `index.js` to `exports` in `package.json`

* Add Actions workflow for testing

Author: interrrp

.github/workflows/node-test.yaml

@@ -0,0 +1,20 @@
+name: "Test Node.js project with Jest"
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "18.x"
+      - run: npm ci
+      - run: npm test

README.md

@@ -1,2 +1,3 @@
 # imsosorrybutinjs
+
 Sometimes it can be necessary to call upon the ancient arts... But in JS!

jsconfig.json

@@ -0,0 +1,6 @@
+{
+  "compilerOptions": {
+    "checkJs": true,
+    "lib": ["esnext"]
+  }
+}