language/node: set npm loglevel to max -ddd

to match the loglevel used in npm_debug.log (previous --verbose loglevel
would match -dd)

Library/Homebrew/language/node.rb

@@ -42,7 +42,7 @@ module Language
 
       # npm install args for global style module format installed into libexec
       %W[
-        --verbose
+        -ddd
         --global
         --prefix=#{libexec}
         #{Dir.pwd}/#{pack}
@@ -52,7 +52,7 @@ module Language
     def self.local_npm_install_args
       setup_npm_environment
       # npm install args for local style module format
-      ["--verbose"]
+      ["-ddd"]
     end
   end
 end

Library/Homebrew/test/language/node_spec.rb

@@ -41,6 +41,6 @@ describe Language::Node do
 
   specify "#local_npm_install_args" do
     resp = subject.local_npm_install_args
-    expect(resp).to include("--verbose")
+    expect(resp).to include("-ddd")
   end
 end