Enhancement to and changelog entry for #1638

Remove bindings dependency as this isn't really... required

lib/constructor.js

@@ -9,22 +9,24 @@ const is = require('./is');
 require('./libvips').hasVendoredLibvips();
 
 let sharp;
-
 try {
-  sharp = require('bindings')('sharp.node');
-} catch (error) {
+  sharp = require('../build/Release/sharp.node');
+} catch (err) {
   // Bail early if bindings aren't available
-  console.error(
-    `
-      "sharp" does not seem to have been built or installed correctly.
-
-      - Try to reinstall packages and look for errors during installation
-      - Consult "sharp" installation page at http://sharp.pixelplumbing.com/en/stable/install/
-
-      If neither of the above work, please open an issue in https://github.com/lovell/sharp/issues
-    `
+  const help = ['', 'Something went wrong installing the "sharp" module', '', err.message, ''];
+  if (/NODE_MODULE_VERSION/.test(err.message)) {
+    help.push('- Ensure the version of Node.js used at install time matches that used at runtime');
+  } else if (/invalid ELF header/.test(err.message)) {
+    help.push(`- Ensure "${process.platform}" is used at install time as well as runtime`);
+  } else {
+    help.push('- Remove the "node_modules/sharp" directory, run "npm install" and look for errors');
+  }
+  help.push(
+    '- Consult the installation documentation at https://sharp.pixelplumbing.com/en/stable/install/',
+    '- Search for this error at https://github.com/lovell/sharp/issues', ''
   );
-  throw error;
+  console.error(help.join('\n'));
+  process.exit(1);
 }
 
 // Use NODE_DEBUG=sharp to enable libvips warnings