feature: native option

Author: Simone Sanfratello

.gitignore

@@ -62,3 +62,6 @@ typings/
 
 # vim swap files
 *.swp
+
+# npm package lock
+package-lock.json

index.js

@@ -1,13 +1,15 @@
 'use strict'
 
 const fp = require('fastify-plugin')
+let pg = require('pg')
 
 function fastifyPostgres (fastify, options, next) {
-  let pg
   if (options.native) {
-    pg = require('pg-native')
-  } else {
-    pg = require('pg')
+    if (!pg.native) {
+      console.warn('pg-native not installed, can\'t use native option')
+    } else {
+      pg = pg.native
+    }
   }
 
   const pool = new pg.Pool(options)

package-lock.json

@@ -27,11 +27,10 @@
   "homepage": "https://github.com/fastify/fastify-postgres#readme",
   "dependencies": {
     "fastify-plugin": "^0.1.1",
-    "pg": "^7.3.0"
-  },
-  "optionalDependencies": {
+    "pg": "^7.3.0",
     "pg-native": "^2.2.0"
   },
+  "optionalDependencies": {},
   "devDependencies": {
     "fastify": "^0.29.2",
     "standard": "^10.0.3",