Add build-json script

scripts/build-json.js

@@ -0,0 +1,31 @@
+const fs = require('fs');
+const path = require('path');
+
+const contractsPath = path.join(__dirname, '..', 'build', 'contracts');
+const libPath = path.join(__dirname, '..', 'lib');
+const abisPath = path.join(libPath, 'abis');
+const addressesPath = path.join(libPath, 'addresses');
+
+const files = [
+  'Contributors',
+  'Operator',
+  'Registry',
+  'Token'
+];
+
+files.forEach((fileName) => {
+  let file = require(`${contractsPath}/${fileName}.json`);
+  let abiFile = path.join(abisPath, `${fileName}.json`);
+  fs.writeFileSync(abiFile, JSON.stringify(file.abi));
+
+  let addresseFile = path.join(addressesPath, `${fileName}.json`);
+  let addresses = Object.keys(file.networks)
+    .reduce((addresses, key) => {
+      addresses[key] = file.networks[key].address;
+      return addresses;
+    }, {});
+  fs.writeFileSync(addresseFile, JSON.stringify(addresses));
+
+  let indexFile = path.join(libPath, 'index.js');
+  fs.writeFileSync(indexFile, `module.exports = ${JSON.stringify(files)};`);
+});