Add generic types and update tests (#107)

* Add generic types and update tests

* Add generic types to `on`, `off` and `emit` to enable some nicer TS
  usage if you specify what type you're expecting from the `EventData`.
* Move the tests to be TypeScript source. This will help catch errors in
  the tests if there are any type errors.
* Create a new test to test the generic types and make sure they pass
  and error when expected.
* Upgrade to Mocha 8.
* Did some tidying up of the package.json scripts.

* Tweak TS setup to validate tests

* Fix d.ts generation and tests

Co-authored-by: Jason Miller <[email protected]>

1 files changed, 5 insertions, 3 deletions

diff --git a/tsconfig.json b/tsconfig.json
index 2610831..acab4f5 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,9 +3,11 @@
 	"compilerOptions": {
 		"noEmit": true,
 		"declaration": true,
-		"moduleResolution": "node"
+		"moduleResolution": "node",
+		"esModuleInterop": true
 	},
-	"exclude": [
-		"test"
+	"include": [
+		"src/*.ts",
+		"test/*.ts",
 	]
 }