Separate index.js and test.js into different files (#234)

Author: tommy-mitchell

estest/index.js

@@ -1,4 +1,4 @@
-import meow from '../index.js';
+import meow from '../source/index.js';
 
 meow(
 	`

index.d.ts

@@ -202,6 +202,8 @@ export type Options<Flags extends AnyFlags> = {
 	/**
 	`package.json` as an `Object`. Default: Closest `package.json` upwards.
 
+	Note: Setting this stops `meow` from finding a package.json.
+
 	_You most likely don't need this option._
 	*/
 	readonly pkg?: Record<string, unknown>;