diff --git a/__TESTS_BUNDLE_SIZE__/bundleSizeTestRunner.ts b/__TESTS_BUNDLE_SIZE__/bundleSizeTestRunner.ts
index fcdb9332..dc662c71 100644
--- a/__TESTS_BUNDLE_SIZE__/bundleSizeTestRunner.ts
+++ b/__TESTS_BUNDLE_SIZE__/bundleSizeTestRunner.ts
@@ -44,7 +44,7 @@ async function bundleSizeTestRunner():Promise<void> {
     const ACTUAL_SIZE_IN_KB = Math.round(bundleInfo.size / 1024);
 
 
-    if (ACTUAL_SIZE_IN_KB <= EXPECTED_SIZE_IN_KB && ACTUAL_SIZE_IN_KB > ALLOWED_MIN_SIZE_IN_KB) {
+    if (ACTUAL_SIZE_IN_KB <= EXPECTED_SIZE_IN_KB && ACTUAL_SIZE_IN_KB >= ALLOWED_MIN_SIZE_IN_KB) {
       handleTestSuccess(testCases[i], ACTUAL_SIZE_IN_KB);
     } else {
       handleTestError(TEST_NAME, EXPECTED_SIZE_IN_KB, ACTUAL_SIZE_IN_KB, ALLOWED_MIN_SIZE_IN_KB);
diff --git a/__TESTS__/TestUtils/createEntryMockedFS.ts b/__TESTS__/TestUtils/createEntryMockedFS.ts
index 62ae64c9..f49a2578 100644
--- a/__TESTS__/TestUtils/createEntryMockedFS.ts
+++ b/__TESTS__/TestUtils/createEntryMockedFS.ts
@@ -1,4 +1,4 @@
-const TEST_FILE_STRUCTURE = {
+export const TEST_FILE_STRUCTURE = {
   'package.json': '{"fieldA":"foobar"}',
   dist: {
     bundles: {
@@ -8,5 +8,3 @@ const TEST_FILE_STRUCTURE = {
     }
   }
 };
-
-export default TEST_FILE_STRUCTURE;
diff --git a/__TESTS__/unit/scripts/createEntryPoints.test.ts b/__TESTS__/unit/scripts/createEntryPoints.test.ts
index 0ffc158f..e98e96fc 100644
--- a/__TESTS__/unit/scripts/createEntryPoints.test.ts
+++ b/__TESTS__/unit/scripts/createEntryPoints.test.ts
@@ -1,16 +1,15 @@
 /* eslint @typescript-eslint/no-var-requires: 0 */
 
-import TEST_FILE_STRUCTURE from "../../TestUtils/createEntryMockedFS";
+const { TEST_FILE_STRUCTURE } = require('../../TestUtils/createEntryMockedFS');
 
 const createEntryPoints = require('../../../scripts/lib/entryPointsLib');
-const mock = require('mock-fs');
+const mockFs = require('mock-fs');
 const fs = require('fs');
 
-
 describe('Tests for createEntryPoints', () => {
   beforeEach(() => {
-    mock.restore();
-    mock(TEST_FILE_STRUCTURE);
+    mockFs.restore();
+    mockFs(TEST_FILE_STRUCTURE);
   });
 
   it ('Creates the main entrypoint to the project', () => {
@@ -38,7 +37,7 @@ describe('Tests for createEntryPoints', () => {
   });
 
   afterAll(() => {
-    mock.restore();
+    mockFs.restore();
   });
 });
 
diff --git a/package.json b/package.json
index 4c06ec85..8d8757f2 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "test": "npm run test:types && npm run build && jest --coverage --reporters default &&  npm run test:size",
     "test:size": "ts-node -O '{\"module\":\"CommonJS\"}' __TESTS_BUNDLE_SIZE__/bin/bin.ts",
     "test:comp": "node ./scripts/updateCompliationTests.js && jest __TESTS__/compilationsOutput.test.ts  --coverage",
-    "test:comp:service": "ts-node devTools/sanity/index.ts && jest __TESTS__/compilation.test.ts",
+    "test:comp:service": "ts-node -O '{\"module\":\"CommonJS\"}' devTools/sanity/index.ts && jest __TESTS__/compilation.test.ts",
     "test:unit": "jest --reporters default",
     "test:unit:watch": "jest --watch --reporters default",
     "test:types": "tsc --project tsconfig.test.json",
@@ -16,9 +16,9 @@
     "build:ESM": "tsc --project tsconfig.json --outDir dist --declaration true",
     "build:rollup": "rollup -c",
     "build:docs": "bash ./scripts/buildDocs.sh",
-    "build:entryPoints": "ts-node ./scripts/createEntrypoints.ts",
-    "build:injectPackageVersion": "ts-node ./scripts/injectPackageVersionToDistFiles.ts",
-    "build:updatePackageExports": "ts-node scripts/updatePackageJsonExports.ts",
+    "build:entryPoints": "ts-node -O '{\"module\":\"CommonJS\"}' ./scripts/createEntrypoints.ts",
+    "build:injectPackageVersion": "ts-node -O '{\"module\":\"CommonJS\"}' ./scripts/injectPackageVersionToDistFiles.ts",
+    "build:updatePackageExports": "ts-node -O '{\"module\":\"CommonJS\"}' scripts/updatePackageJsonExports.ts",
     "lint": "npm run lint:src && npm run lint:test",
     "lint:src": "eslint src --color --ext .ts",
     "lint:test": "eslint __TESTS__ __TESTS_BUNDLE_SIZE__ --rule 'import/extensions: [0, \"never\"]' --color --ext .ts",
@@ -87,7 +87,7 @@
     "ts-node": "^8.10.2",
     "tslib": "^2.0.0",
     "typedoc": "^0.17.8",
-    "typescript": "^3.9.3",
+    "typescript": "^4.2.0",
     "webpack": "^4.44.1"
   },
   "exports": {
diff --git a/rollup.config.js b/rollup.config.js
index 4bcc5d5d..5011686d 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -21,6 +21,7 @@ export default [
       resolve(),
       replace({
         'PACKAGE_VERSION_INJECTED_DURING_BUILD': version,
+        preventAssignment: true
       }),
       typescript({ target: 'es5' }),
       commonjs(),
@@ -41,6 +42,7 @@ export default [
       resolve(),
       replace({
         'PACKAGE_VERSION_INJECTED_DURING_BUILD': version,
+        preventAssignment: true
       }),
       typescript({ target: "es5" }),
       commonjs()
diff --git a/rollup.dev.config.js b/rollup.dev.config.js
index ba0104de..21cc3244 100644
--- a/rollup.dev.config.js
+++ b/rollup.dev.config.js
@@ -22,7 +22,8 @@ export default {
     }),
     resolve(),
     replace({
-      'PACKAGE_VERSION_INJECTED_DURING_BUILD': version
+      'PACKAGE_VERSION_INJECTED_DURING_BUILD': version,
+      preventAssignment: true
     }),
     babel({
       exclude: 'node_modules/**' // only transpile our source code
diff --git a/tsconfig.json b/tsconfig.json
index cd1e61b0..b59eddd7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,14 +2,14 @@
   "compilerOptions": {
     "noImplicitAny": true,
     "target": "ES2015",
-    "module": "ES2015",
+    "module": "ES2022",
     "moduleResolution": "node",
     "baseUrl": "src",
     "esModuleInterop": true,
     "resolveJsonModule": true,
-    "allowJs": true
+    "allowJs": true,
   },
   "include": [
     "src"
   ]
-}
\ No newline at end of file
+}