Add a test (#77)

* Match Prettier style

This way, people who have Prettier as their default formatter in their Editor (probably the majority of people) will not have the code re-formatted to double quotes if they are saving

* Add trailing-comma option

* Instruct .vscode to use ESLint as a default formatter

* Discard changes to package.json

* Add a first test

* Setup CI

* Rename to test

* move tsconfig hacks to local tsconfig.json

* Better test title

* rename file

* Fix ts setup

test/tsconfig.json

@@ -0,0 +1,13 @@
+{
+	"extends": "../tsconfig.json",
+	"compilerOptions": {
+		"noEmit": true,
+		"moduleResolution": "nodenext",
+		"module": "NodeNext",
+		"declaration": true,
+		"declarationMap": true,
+		"stripInternal": true
+	},
+	"include": ["**/*"],
+	"references": [{ "path": "../src" }]
+}