Use the current contract name for Solidity compilation (#4510)

js/src/util/solidity.js

@@ -18,14 +18,14 @@ import solc from 'solc/browser-wrapper';
 
 export default class SolidityUtils {
   static compile (data, compiler) {
-    const { sourcecode, build, optimize, files } = data;
+    const { sourcecode, build, optimize, files, name = '' } = data;
 
     const start = Date.now();
 
     console.log('[solidity] compiling...');
 
     const input = {
-      '': sourcecode
+      [ name ]: sourcecode
     };
 
     const findFiles = (path) => {

js/src/views/WriteContract/writeContractStore.js

@@ -259,10 +259,15 @@ export default class WriteContractStore {
   }
 
   compile = (data) => {
+    const { name = '' } = this.selectedContract;
+
     if (this.useWorker) {
       return this.worker.postMessage({
         action: 'compile',
-        data
+        data: {
+          ...data,
+          name
+        }
       });
     }
 
@@ -271,7 +276,10 @@ export default class WriteContractStore {
         this
           .getCompiler(data.build)
           .then((compiler) => {
-            return SolidityUtils.compile(data, compiler);
+            return SolidityUtils.compile({
+              ...data,
+              name
+            }, compiler);
           })
           .then(resolve)
           .catch(reject);