feat(api): decouple api from curriculum (#40703)

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

@@ -1,43 +0,0 @@
-function isPromiseLike(thing) {
-  return !!thing && typeof thing.then === 'function';
-}
-
-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();
-  cache.set(cacheKey, initialValue);
-
-  return {
-    get() {
-      const value = cache.get(cacheKey);
-      return typeof value !== 'undefined' ? value : null;
-    },
-
-    update(fn) {
-      try {
-        const value = fn();
-        if (isPromiseLike(value)) {
-          return value.then(value => cache.set(cacheKey, value));
-        } else {
-          cache.set(cacheKey, value);
-        }
-      } catch (e) {
-        const errMsg = `InMemoryCache > update > caught: ${e.message}`;
-        e.message = errMsg;
-        reportError(e);
-      }
-      return null;
-    },
-
-    clear() {
-      return cache.delete(cacheKey);
-    }
-  };
-}
-
-export default InMemoryCache;