From e3de0f7156c579e5db05e6cb895df3884e8b9cdd Mon Sep 17 00:00:00 2001
From: Cyril Sobierajewicz <cyril.sobierajewicz@fretlink.com>
Date: Mon, 3 Dec 2018 11:53:45 +0100
Subject: Tag errors with a specific constructor to simplify their detection

---
 src/index.js |  2 +-
 src/utils.js | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/index.js b/src/index.js
index 01ad5a6..8a2e468 100644
--- a/src/index.js
+++ b/src/index.js
@@ -238,7 +238,7 @@ module.exports = function purescriptLoader(source, map) {
           modules.push(desc);
         }
 
-        CACHE_VAR.errors.push(Object.assign(new Error(pscMessage), { modules }));
+        CACHE_VAR.errors.push(new utils.PscError(pscMessage, modules));
       }
     }
   }
diff --git a/src/utils.js b/src/utils.js
index 0ab00eb..671b580 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,5 +1,16 @@
 const path = require('path');
 
+exports.PscError = class PscError extends Error {
+  constructor(message, modules) {
+    super(message);
+    this.modules = modules;
+  }
+
+  static get name() {
+    return 'PscError';
+  }
+};
+
 const repeat = (value, times) =>
   times <= 0 ? [] : [value, ...repeat(value, times - 1)];
 const diffPursModuleNames = (from, target, parts) => {
-- 
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