diff --git a/npm/ng-packs/.gitignore b/npm/ng-packs/.gitignore
index 326e29324e..b542c2b12d 100644
--- a/npm/ng-packs/.gitignore
+++ b/npm/ng-packs/.gitignore
@@ -54,3 +54,5 @@ Thumbs.db
 
 !**/[Pp]ackages/*
 *.internal.*
+
+.angular
diff --git a/npm/ng-packs/package.json b/npm/ng-packs/package.json
index 1798f45594..a669d3b970 100644
--- a/npm/ng-packs/package.json
+++ b/npm/ng-packs/package.json
@@ -34,7 +34,9 @@
     "dev:schematics": "tsc -p packages/schematics/tsconfig.json -w",
     "ci": "yarn affected:lint && yarn affected:build && yarn affected:test",
     "lerna": "lerna",
-    "migrate-nx": "yarn nx migrate --run-migrations"
+    "migrate-nx": "yarn nx migrate --run-migrations",
+    "mock:schematics": "cd scripts/mock-schematic && yarn && yarn start",
+    "debug:schematics": "./node_modules/.bin/ng g ./packages/schematics/src/collection.json:proxy-add --module __default --apiName __default --source __default --target __default --url http://localhost:4300"
   },
   "private": true,
   "devDependencies": {
diff --git a/npm/ng-packs/packages/schematics/src/models/index.ts b/npm/ng-packs/packages/schematics/src/models/index.ts
index 176c9c6617..c6d04f521e 100644
--- a/npm/ng-packs/packages/schematics/src/models/index.ts
+++ b/npm/ng-packs/packages/schematics/src/models/index.ts
@@ -5,6 +5,7 @@ export * from './method';
 export * from './model';
 export * from './project';
 export * from './proxy-config';
+export * from './rule';
 export * from './service';
 export * from './tree';
 export * from './util';
diff --git a/npm/ng-packs/packages/schematics/src/models/rule.ts b/npm/ng-packs/packages/schematics/src/models/rule.ts
new file mode 100644
index 0000000000..9c4f9b43ea
--- /dev/null
+++ b/npm/ng-packs/packages/schematics/src/models/rule.ts
@@ -0,0 +1,3 @@
+import { Rule } from '@angular-devkit/schematics';
+
+export type RuleReturn = ReturnType<Rule>;
diff --git a/npm/ng-packs/packages/schematics/src/utils/rule.ts b/npm/ng-packs/packages/schematics/src/utils/rule.ts
index bd6acdd646..c68347531f 100644
--- a/npm/ng-packs/packages/schematics/src/utils/rule.ts
+++ b/npm/ng-packs/packages/schematics/src/utils/rule.ts
@@ -9,11 +9,15 @@ import {
   Source,
   Tree,
 } from '@angular-devkit/schematics';
+import { RuleReturn } from '../models/rule';
 
 export function applyWithOverwrite(source: Source, rules: Rule[]): Rule {
   return (tree: Tree, _context: SchematicContext) => {
-    const rule = mergeWith(apply(source, [...rules, overwriteFileIfExists(tree)]));
-
+    const mapped = rules.map<Rule>(r => {
+      return ((_tree: Tree, _ctx: SchematicContext) =>
+        new Promise<RuleReturn>(res => res(r(_tree, _ctx)))) as Rule;
+    });
+    const rule = mergeWith(apply(source, [...mapped, overwriteFileIfExists(tree)]));
     return rule(tree, _context);
   };
 }
diff --git a/npm/ng-packs/packages/schematics/src/mocks/api-definition.json b/npm/ng-packs/scripts/mock-schematic/api-definition.json
similarity index 100%
rename from npm/ng-packs/packages/schematics/src/mocks/api-definition.json
rename to npm/ng-packs/scripts/mock-schematic/api-definition.json
diff --git a/npm/ng-packs/scripts/mock-schematic/mock-schematic-json.ts b/npm/ng-packs/scripts/mock-schematic/mock-schematic-json.ts
new file mode 100644
index 0000000000..a4eb4f11d0
--- /dev/null
+++ b/npm/ng-packs/scripts/mock-schematic/mock-schematic-json.ts
@@ -0,0 +1,13 @@
+import express, { Request, Response } from 'express';
+import fs from 'fs';
+
+const port = 4300;
+const app = express();
+
+app.get('/api/abp/api-definition', async (req: Request, res: Response) => {
+  const file = fs.readFileSync('./api-definition.json');
+  res.contentType('application/json');
+  res.send(file);
+});
+
+app.listen(port, () => console.log(`Server listening on http://localhost:${port}`));
diff --git a/npm/ng-packs/scripts/mock-schematic/package.json b/npm/ng-packs/scripts/mock-schematic/package.json
new file mode 100644
index 0000000000..72bdd34635
--- /dev/null
+++ b/npm/ng-packs/scripts/mock-schematic/package.json
@@ -0,0 +1,22 @@
+{
+  "name": "mocks-schematics",
+  "version": "0.0.1",
+  "description": "ABP Mock Proxy Generation App",
+  "scripts": {
+    "start": "nodemon mock-schematic-json.ts"
+  },
+  "author": "",
+  "dependencies": {
+    "babel-preset-node6": "^11.0.0",
+    "express": "^4.18.1"
+  },
+  "devDependencies": {
+    "@types/node": "^13.1.2",
+    "esm": "^3.2.25",
+    "ts-node": "^8.5.4",
+    "tsconfig-paths": "^3.9.0",
+    "typescript": "^3.7.4",
+    "nodemon":  "^2.0.19",
+    "@types/express": "^4.17.13"
+  }
+}
diff --git a/npm/ng-packs/scripts/mock-schematic/tsconfig.json b/npm/ng-packs/scripts/mock-schematic/tsconfig.json
new file mode 100644
index 0000000000..0e05b4f7ed
--- /dev/null
+++ b/npm/ng-packs/scripts/mock-schematic/tsconfig.json
@@ -0,0 +1,12 @@
+{
+"compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true
+  }
+}