feat: Add error handling for inMemoryCache

api-server/server/utils/in-memory-cache.js

@@ -2,21 +2,32 @@ function isPromiseLike(thing) {
   return !!thing && typeof thing.then === 'function';
 }
 
-function InMemoryCache(initialValue) {
+function InMemoryCache(initialValue, reportError) {
+  if (typeof reportError !== 'function') {
+    throw new Error(
+      'No reportError function specified for this in-memory-cache'
+    );
+  }
   const cacheKey = Symbol('cacheKey');
   const cache = new Map();
-
-  if (typeof initialValue !== 'undefined') {
-    cache.set(cacheKey, initialValue);
-  }
+  cache.set(cacheKey, initialValue);
 
   return {
     get() {
       const value = cache.get(cacheKey);
       return typeof value !== 'undefined' ? value : null;
     },
+
     async update(fn) {
-      const maybePromisedValue = fn();
+      let maybePromisedValue;
+      try {
+        maybePromisedValue = fn();
+      } catch (e) {
+        const errMsg = `InMemoryCache > update > caught: ${e.message}`;
+        e.message = errMsg;
+        reportError(e);
+        return null;
+      }
       if (isPromiseLike(maybePromisedValue)) {
         return maybePromisedValue.then(value => cache.set(cacheKey, value));
       } else {
@@ -25,6 +36,7 @@ function InMemoryCache(initialValue) {
         return null;
       }
     },
+
     clear() {
       return cache.delete(cacheKey);
     }