Only throw "filesystem unsupported" if the fs require fails

Author: petebacondarwin

packages/pg-connection-string/index.js

@@ -68,23 +68,26 @@ function parse(str) {
     config.ssl = {}
   }
 
-  try {
-    if (config.sslcert) {
-      const fs = require('fs')
-      config.ssl.cert = fs.readFileSync(config.sslcert).toString()
+  let fs
+  if (config.sslcert || config.sslkey || config.sslrootcert) {
+    try {
+      // Only try to load fs if we expect to read from the disk
+      fs = require('fs')
+    } catch (e) {
+      throw new Error('filesystem not supported')
     }
+  }
 
-    if (config.sslkey) {
-      const fs = require('fs')
-      config.ssl.key = fs.readFileSync(config.sslkey).toString()
-    }
+  if (config.sslcert) {
+    config.ssl.cert = fs.readFileSync(config.sslcert).toString()
+  }
 
-    if (config.sslrootcert) {
-      const fs = require('fs')
-      config.ssl.ca = fs.readFileSync(config.sslrootcert).toString()
-    }
-  } catch (e) {
-    throw new Error('filesystem not supported')
+  if (config.sslkey) {
+    config.ssl.key = fs.readFileSync(config.sslkey).toString()
+  }
+
+  if (config.sslrootcert) {
+    config.ssl.ca = fs.readFileSync(config.sslrootcert).toString()
   }
 
   switch (config.sslmode) {