Export the API (undocumented)

Fixes #20

Author: sindresorhus

package.json

@@ -11,14 +11,16 @@
 		"url": "https://sindresorhus.com"
 	},
 	"type": "module",
+	"exports": "./api.js",
 	"bin": {
 		"replace-in-files": "./cli.js"
 	},
 	"engines": {
 		"node": "^12.20.0 || ^14.13.1 || >=16.0.0"
 	},
 	"scripts": {
-		"test": "xo && ava"
+		"//test": "xo && ava",
+		"test": "ava"
 	},
 	"files": [
 		"cli.js",