3 files changed, 14 insertions, 0 deletions
diff --git a/packages/utils/CHANGELOG.json b/packages/utils/CHANGELOG.json
index 616a17d62..339d73e05 100644
--- a/packages/utils/CHANGELOG.json
+++ b/packages/utils/CHANGELOG.json
@@ -1,5 +1,13 @@
 [
     {
+        "version": "0.6.3",
+        "changes": [
+            {
+                "note": "Added errorUtils.spawnSwitchErr"
+            }
+        ]
+    },
+    {
         "timestamp": 1527009133,
         "version": "0.6.2",
         "changes": [
diff --git a/packages/utils/src/error_utils.ts b/packages/utils/src/error_utils.ts
new file mode 100644
index 000000000..735d3940b
--- /dev/null
+++ b/packages/utils/src/error_utils.ts
@@ -0,0 +1,5 @@
+export const errorUtils = {
+    spawnSwitchErr(name: string, value: any): Error {
+        return new Error(`Unexpected switch value: ${value} encountered for ${name}`);
+    },
+};
diff --git a/packages/utils/src/index.ts b/packages/utils/src/index.ts
index 709ec93b2..fd102cecb 100644
--- a/packages/utils/src/index.ts
+++ b/packages/utils/src/index.ts
@@ -7,3 +7,4 @@ export { AbiDecoder } from './abi_decoder';
 export { logUtils } from './log_utils';
 export { abiUtils } from './abi_utils';
 export { NULL_BYTES } from './constants';
+export { errorUtils } from './error_utils';