diff --git a/lib/bin/mrepo.js b/lib/bin/mrepo.js
old mode 100644
new mode 100755
diff --git a/lib/helpers/hash-check.helper.js b/lib/helpers/hash-check.helper.js
index d2daf54..29abdad 100644
--- a/lib/helpers/hash-check.helper.js
+++ b/lib/helpers/hash-check.helper.js
@@ -1,6 +1,7 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.saveCache = exports.hasCached = void 0;
+const util_1 = require("@nestled/util");
 const folder_hash_1 = require("folder-hash");
 const fs_extra_1 = require("fs-extra");
 const path_1 = require("path");
@@ -11,7 +12,7 @@ async function hasCached(workspaceName, packageName) {
     const savedCache = cacheFile[packageName] || {};
     const paths = getPaths(workspaceName, packageName);
     const hashes = await getHashes(paths);
-    return savedCache.src === hashes.src && savedCache.lib === hashes.lib;
+    return savedCache.src === hashes.src && savedCache.lib === hashes.lib && util_1.isString(hashes.lib);
 }
 exports.hasCached = hasCached;
 async function saveCache(workspaceName, packageName) {
diff --git a/lib/helpers/hash-check.helper.js.map b/lib/helpers/hash-check.helper.js.map
index e8bc8c9..b86d36a 100644
--- a/lib/helpers/hash-check.helper.js.map
+++ b/lib/helpers/hash-check.helper.js.map
@@ -1 +1 @@
-{"version":3,"file":"hash-check.helper.js","sourceRoot":"","sources":["../../src/helpers/hash-check.helper.ts"],"names":[],"mappings":";;;AAAA,6CAA0C;AAC1C,uCAA2D;AAC3D,+BAA4B;AAC5B,4CAA2E;AAG3E,MAAM,0BAA0B,GAAG,WAAI,CAAC,OAAO,CAAC,GAAG,EAAE,EAAE,2BAAe,EAAE,sCAA0B,CAAC,CAAC;AAE7F,KAAK,UAAU,SAAS,CAAC,aAAqB,EAAE,WAAmB;IACxE,MAAM,SAAS,GAAG,MAAM,qBAAqB,EAAE,CAAC;IAChD,MAAM,UAAU,GAAsB,SAAS,CAAC,WAAW,CAAC,IAAI,EAAE,CAAC;IACnE,MAAM,KAAK,GAAG,QAAQ,CAAC,aAAa,EAAE,WAAW,CAAC,CAAC;IACnD,MAAM,MAAM,GAAG,MAAM,SAAS,CAAC,KAAK,CAAC,CAAC;IAEtC,OAAO,UAAU,CAAC,GAAG,KAAK,MAAM,CAAC,GAAG,IAAI,UAAU,CAAC,GAAG,KAAK,MAAM,CAAC,GAAG,CAAC;AACxE,CAAC;AAPD,8BAOC;AAEM,KAAK,UAAU,SAAS,CAAC,aAAqB,EAAE,WAAmB;IACxE,MAAM,SAAS,GAAG,MAAM,qBAAqB,EAAE,CAAC;IAChD,MAAM,KAAK,GAAG,QAAQ,CAAC,aAAa,EAAE,WAAW,CAAC,CAAC;IACnD,MAAM,MAAM,GAAG,MAAM,SAAS,CAAC,KAAK,CAAC,CAAC;IAEtC,MAAM,oBAAS,CAAC,0BAA0B,EAAE;QAC1C,GAAG,SAAS;QACZ,CAAC,WAAW,CAAC,EAAE,MAAM;KACtB,CAAC,CAAC;AACL,CAAC;AATD,8BASC;AAED,SAAS,QAAQ,CAAC,aAAqB,EAAE,WAAmB;IAC1D,MAAM,WAAW,GAAG,WAAI,CAAC,OAAO,CAAC,GAAG,EAAE,EAAE,aAAa,EAAE,WAAW,CAAC,CAAC;IACpE,MAAM,GAAG,GAAG,WAAI,CAAC,WAAW,EAAE,KAAK,CAAC,CAAC;IACrC,MAAM,GAAG,GAAG,WAAI,CAAC,WAAW,EAAE,KAAK,CAAC,CAAC;IAErC,OAAO,EAAE,GAAG,EAAE,GAAG,EAAE,CAAC;AACtB,CAAC;AAED,KAAK,UAAU,qBAAqB;IAClC,MAAM,qBAAU,CAAC,0BAA0B,CAAC,CAAC;IAE7C,MAAM,eAAe,GAAG,MAAM,mBAAQ,CAAC,0BAA0B,EAAE,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC;IAEtF,IAAI,CAAC,eAAe,EAAE;QACpB,MAAM,oBAAS,CAAC,0BAA0B,EAAE,EAAE,CAAC,CAAC;QAChD,OAAO,EAAE,CAAC;KACX;IAED,OAAO,eAAe,CAAC;AACzB,CAAC;AAED,KAAK,UAAU,UAAU,CAAC,IAAY;IACpC,IAAI;QACF,MAAM,IAAI,GAAG,MAAM,yBAAW,CAAC,IAAI,CAAC,CAAC;QACrC,OAAO,IAAI,aAAJ,IAAI,uBAAJ,IAAI,CAAE,IAAI,CAAC;KACnB;IAAC,OAAO,CAAC,EAAE;QACV,OAAO,SAAS,CAAC;KAClB;AACH,CAAC;AAED,KAAK,UAAU,SAAS,CAAC,KAAmC;IAC1D,MAAM,CAAC,GAAG,EAAE,GAAG,CAAC,GAAG,MAAM,OAAO,CAAC,GAAG,CAAC,CAAC,UAAU,CAAC,KAAK,CAAC,GAAG,CAAC,EAAE,MAAM,UAAU,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;IAC3F,OAAO,EAAE,GAAG,EAAE,GAAG,EAAE,CAAC;AACtB,CAAC"}
\ No newline at end of file
+{"version":3,"file":"hash-check.helper.js","sourceRoot":"","sources":["../../src/helpers/hash-check.helper.ts"],"names":[],"mappings":";;;AAAA,wCAAyC;AACzC,6CAA0C;AAC1C,uCAA2D;AAC3D,+BAA4B;AAC5B,4CAA2E;AAG3E,MAAM,0BAA0B,GAAG,WAAI,CAAC,OAAO,CAAC,GAAG,EAAE,EAAE,2BAAe,EAAE,sCAA0B,CAAC,CAAC;AAE7F,KAAK,UAAU,SAAS,CAAC,aAAqB,EAAE,WAAmB;IACxE,MAAM,SAAS,GAAG,MAAM,qBAAqB,EAAE,CAAC;IAChD,MAAM,UAAU,GAAsB,SAAS,CAAC,WAAW,CAAC,IAAI,EAAE,CAAC;IACnE,MAAM,KAAK,GAAG,QAAQ,CAAC,aAAa,EAAE,WAAW,CAAC,CAAC;IACnD,MAAM,MAAM,GAAG,MAAM,SAAS,CAAC,KAAK,CAAC,CAAC;IAEtC,OAAO,UAAU,CAAC,GAAG,KAAK,MAAM,CAAC,GAAG,IAAI,UAAU,CAAC,GAAG,KAAK,MAAM,CAAC,GAAG,IAAI,eAAQ,CAAC,MAAM,CAAC,GAAG,CAAC,CAAC;AAChG,CAAC;AAPD,8BAOC;AAEM,KAAK,UAAU,SAAS,CAAC,aAAqB,EAAE,WAAmB;IACxE,MAAM,SAAS,GAAG,MAAM,qBAAqB,EAAE,CAAC;IAChD,MAAM,KAAK,GAAG,QAAQ,CAAC,aAAa,EAAE,WAAW,CAAC,CAAC;IACnD,MAAM,MAAM,GAAG,MAAM,SAAS,CAAC,KAAK,CAAC,CAAC;IAEtC,MAAM,oBAAS,CAAC,0BAA0B,EAAE;QAC1C,GAAG,SAAS;QACZ,CAAC,WAAW,CAAC,EAAE,MAAM;KACtB,CAAC,CAAC;AACL,CAAC;AATD,8BASC;AAED,SAAS,QAAQ,CAAC,aAAqB,EAAE,WAAmB;IAC1D,MAAM,WAAW,GAAG,WAAI,CAAC,OAAO,CAAC,GAAG,EAAE,EAAE,aAAa,EAAE,WAAW,CAAC,CAAC;IACpE,MAAM,GAAG,GAAG,WAAI,CAAC,WAAW,EAAE,KAAK,CAAC,CAAC;IACrC,MAAM,GAAG,GAAG,WAAI,CAAC,WAAW,EAAE,KAAK,CAAC,CAAC;IAErC,OAAO,EAAE,GAAG,EAAE,GAAG,EAAE,CAAC;AACtB,CAAC;AAED,KAAK,UAAU,qBAAqB;IAClC,MAAM,qBAAU,CAAC,0BAA0B,CAAC,CAAC;IAE7C,MAAM,eAAe,GAAG,MAAM,mBAAQ,CAAC,0BAA0B,EAAE,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC;IAEtF,IAAI,CAAC,eAAe,EAAE;QACpB,MAAM,oBAAS,CAAC,0BAA0B,EAAE,EAAE,CAAC,CAAC;QAChD,OAAO,EAAE,CAAC;KACX;IAED,OAAO,eAAe,CAAC;AACzB,CAAC;AAED,KAAK,UAAU,UAAU,CAAC,IAAY;IACpC,IAAI;QACF,MAAM,IAAI,GAAG,MAAM,yBAAW,CAAC,IAAI,CAAC,CAAC;QACrC,OAAO,IAAI,aAAJ,IAAI,uBAAJ,IAAI,CAAE,IAAI,CAAC;KACnB;IAAC,OAAO,CAAC,EAAE;QACV,OAAO,SAAS,CAAC;KAClB;AACH,CAAC;AAED,KAAK,UAAU,SAAS,CAAC,KAAmC;IAC1D,MAAM,CAAC,GAAG,EAAE,GAAG,CAAC,GAAG,MAAM,OAAO,CAAC,GAAG,CAAC,CAAC,UAAU,CAAC,KAAK,CAAC,GAAG,CAAC,EAAE,MAAM,UAAU,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;IAC3F,OAAO,EAAE,GAAG,EAAE,GAAG,EAAE,CAAC;AACtB,CAAC"}
\ No newline at end of file
diff --git a/src/helpers/hash-check.helper.ts b/src/helpers/hash-check.helper.ts
index 1376b94..8ce7189 100644
--- a/src/helpers/hash-check.helper.ts
+++ b/src/helpers/hash-check.helper.ts
@@ -1,3 +1,4 @@
+import { isString } from '@nestled/util';
 import { hashElement } from 'folder-hash';
 import { ensureFile, readJson, writeJson } from 'fs-extra';
 import { join } from 'path';
@@ -12,7 +13,7 @@ export async function hasCached(workspaceName: string, packageName: string): Pro
   const paths = getPaths(workspaceName, packageName);
   const hashes = await getHashes(paths);
 
-  return savedCache.src === hashes.src && savedCache.lib === hashes.lib;
+  return savedCache.src === hashes.src && savedCache.lib === hashes.lib && isString(hashes.lib);
 }
 
 export async function saveCache(workspaceName: string, packageName: string) {