1 files changed, 7 insertions, 3 deletions

diff --git a/src/data/cacheable-object.js b/src/data/cacheable-object.js
index 087f7825..651a61cf 100644
--- a/src/data/cacheable-object.js
+++ b/src/data/cacheable-object.js
@@ -14,7 +14,7 @@ export default class CacheableObject {
   static cacheValid = Symbol.for('CacheableObject.cacheValid');
   static updateValue = Symbol.for('CacheableObject.updateValues');
 
-  constructor() {
+  constructor({seal = true} = {}) {
     this[CacheableObject.updateValue] = Object.create(null);
     this[CacheableObject.cachedValue] = Object.create(null);
     this[CacheableObject.cacheValid] = Object.create(null);
@@ -34,6 +34,10 @@ export default class CacheableObject {
         this[property] = null;
       }
     }
+
+    if (seal) {
+      Object.seal(this);
+    }
   }
 
   static finalizeCacheableObjectPrototype() {
@@ -239,13 +243,13 @@ export class CacheableObjectPropertyValueError extends Error {
 
     try {
       inspectOldValue = inspect(oldValue);
-    } catch (error) {
+    } catch {
       inspectOldValue = colors.red(`(couldn't inspect)`);
     }
 
     try {
       inspectNewValue = inspect(newValue);
-    } catch (error) {
+    } catch {
       inspectNewValue = colors.red(`(couldn't inspect)`);
     }