Minor refactor, add typings

.taprc

@@ -0,0 +1,2 @@
+files:
+  - test/**.test.js

package.json

@@ -3,13 +3,14 @@
   "version": "4.0.0",
   "description": "Fastify plugin to check environment variables",
   "main": "index.js",
+  "types": "types/index.d.ts",
   "scripts": {
-    "coverage": "cross-env VALUE_FROM_ENV=pippo tap --cov --coverage-report=html test/*.js",
+    "coverage": "cross-env VALUE_FROM_ENV=pippo tap --cov --coverage-report=html",
     "lint": "standard | snazzy",
     "lint:fix": "standard --fix",
-    "test": "npm run lint && npm run unit && npm run typescript",
-    "typescript": "tsd",
-    "unit": "cross-env VALUE_FROM_ENV=pippo tap test/*.js"
+    "test": "npm run test:unit && npm run test:typescript",
+    "test:typescript": "tsd",
+    "test:unit": "cross-env VALUE_FROM_ENV=pippo tap"
   },
   "repository": {
     "type": "git",
@@ -38,6 +39,10 @@
     "tap": "^16.0.0",
     "tsd": "^0.22.0"
   },
+  "pre-commit": [
+    "lint",
+    "test"
+  ],
   "tsd": {
     "directory": "test/types"
   },

types/index.d.ts

@@ -0,0 +1,7 @@
+import { EnvSchemaOpt } from "env-schema";
+import { FastifyPluginCallback } from "fastify";
+
+export type fastifyEnvOpt = EnvSchemaOpt & { confKey?: string };
+
+export const fastifyEnv: FastifyPluginCallback<fastifyEnvOpt>;
+export default fastifyEnv;

types/index.test-d.ts

@@ -0,0 +1,6 @@
+import fastify from 'fastify';
+import fastifyEnv from '..';
+
+const server = fastify();
+
+server.register(fastifyEnv, { confKey: 'test' });