diff --git a/npm/ng-packs/packages/schematics/src/utils/type.ts b/npm/ng-packs/packages/schematics/src/utils/type.ts
index d6e451f202..9734b96af5 100644
--- a/npm/ng-packs/packages/schematics/src/utils/type.ts
+++ b/npm/ng-packs/packages/schematics/src/utils/type.ts
@@ -15,13 +15,18 @@ export function createTypeSimplifier() {
     );
     return type.split('.').pop()!;
   });
-  return (type: string) => parseType(type).join(' | ');
+
+  return (type: string) => {
+    const parsed = parseType(type);
+    const last = parsed.pop()!;
+    return parsed.reduceRight((record, tKey) => `Record<${tKey}, ${record}>`, last);
+  };
 }
 
 export function createTypeParser(replacerFn = (t: string) => t) {
   const normalizeType = createTypeNormalizer(replacerFn);
 
-  return (originalType: string) => flattenUnionTypes([], originalType).map(normalizeType);
+  return (originalType: string) => flattenDictionaryTypes([], originalType).map(normalizeType);
 }
 
 export function createTypeNormalizer(replacerFn = (t: string) => t) {
@@ -32,14 +37,10 @@ export function createTypeNormalizer(replacerFn = (t: string) => t) {
   };
 }
 
-export function flattenUnionTypes(types: string[], type: string) {
+export function flattenDictionaryTypes(types: string[], type: string) {
   type
-    .replace(/^{/, '')
-    .replace(/}$/, '')
-    .replace(/{/, '(')
-    .replace(/}/, ')')
+    .replace(/[}{]/g, '')
     .split(':')
-    .filter(Boolean)
     .forEach(t => types.push(t));
 
   return types;