Fixed sorting in artifact generation

packages/contracts-gen/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "version": "1.1.1",
+        "changes": [
+            {
+                "note": "Fixed sorting in artifact generation",
+                "pr": 1910
+            }
+        ]
+    },
     {
         "version": "1.1.0",
         "changes": [

packages/contracts-gen/src/contracts-gen.ts

@@ -79,7 +79,7 @@ function generateArtifactsTs(contracts: string[], artifactsDir: string, prettier
         const importPath = path.join('..', artifactsDir, `${contractName}.json`);
         return `import * as ${contractName} from '${importPath}';`;
     });
-    const sortedImports = _.sortBy(imports);
+    const sortedImports = _.sortBy(imports, _import => _import.toLowerCase());
     const artifacts = _.map(contracts, contract => {
         const contractName = path.basename(contract, SOLIDITY_EXTENSION);
         if (contractName === 'ZRXToken') {