fix prepack script

Author: frangio

scripts/prepack.sh

@@ -1,10 +1,12 @@
 #!/usr/bin/env bash
 
 set -euo pipefail
+shopt -s globstar
 
 # cross platform `mkdir -p`
 node -e 'fs.mkdirSync("build/contracts", { recursive: true })'
 
-cp artifacts/**/*.json build/contracts
+cp artifacts/contracts/**/*.json build/contracts
+rm build/contracts/*.dbg.json
 
 node scripts/remove-ignored-artifacts.js

scripts/remove-ignored-artifacts.js

@@ -28,7 +28,7 @@ const filenames = fs.readdirSync(buildinfo);
 if (filenames.length !== 1) {
   throw new Error(`There should only be one file in ${buildinfo}`);
 }
-const solcOutput = readJSON(path.join(buildinfo, filenames[0]));
+const solcOutput = readJSON(path.join(buildinfo, filenames[0])).output;
 
 const artifactsDir = 'build/contracts';