diff --git a/.eslintrc.json b/.eslintrc.json
index d2361987..a54ad24c 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -3,10 +3,9 @@
   "env": {
     "node": true
   },
-  "parser": "babel-eslint",
   "parserOptions": {
     "sourceType": "module",
-    "ecmaVersion": 6,
+    "ecmaVersion": "latest",
     "allowImportExportEverywhere": true
   },
   "globals": {
diff --git a/README.md b/README.md
index 8e158cfb..2914bdc0 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,8 @@ test('should do global instance mocks —third parameter', async t => {
 
 ### changelog
 
+ * 0.4.0 _Sep.07.2021_
+   * do not runtime error when returuning type '[object Module]' default
  * 0.3.9 _May.05.2021_
    * small change to README
    * added a test, update gitlab action to use node 16.x
diff --git a/package-lock.json b/package-lock.json
index b303ca42..445e1f91 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,22 +1,22 @@
 {
   "name": "esmock",
-  "version": "0.3.8",
+  "version": "0.4.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "version": "0.3.8",
+      "name": "esmock",
+      "version": "0.4.0",
       "license": "MIT",
       "dependencies": {
         "resolvewithplus": "^0.2.0"
       },
       "devDependencies": {
         "ava": "^4.0.0-alpha.2",
-        "babel-eslint": "^10.1.0",
-        "eslint": "^7.17.0",
-        "form-urlencoded": "^4.2.1",
+        "eslint": "^7.32.0",
+        "form-urlencoded": "4.2.1",
         "import-local": "3.0.2",
-        "sinon": "^10.0.0"
+        "sinon": "^11.1.2"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -28,55 +28,6 @@
         "@babel/highlight": "^7.10.4"
       }
     },
-    "node_modules/@babel/generator": {
-      "version": "7.12.11",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.12.11.tgz",
-      "integrity": "sha512-Ggg6WPOJtSi8yYQvLVjG8F/TlpWDlKx0OpS4Kt+xMQPs5OaGYWy+v1A+1TvxI6sAMGZpKWWoAQ1DaeQbImlItA==",
-      "dev": true,
-      "dependencies": {
-        "@babel/types": "^7.12.11",
-        "jsesc": "^2.5.1",
-        "source-map": "^0.5.0"
-      }
-    },
-    "node_modules/@babel/generator/node_modules/source-map": {
-      "version": "0.5.7",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
-      "dev": true,
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
-    "node_modules/@babel/helper-function-name": {
-      "version": "7.12.11",
-      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.12.11.tgz",
-      "integrity": "sha512-AtQKjtYNolKNi6nNNVLQ27CP6D9oFR6bq/HPYSizlzbp7uC1M59XJe8L+0uXjbIaZaUJF99ruHqVGiKXU/7ybA==",
-      "dev": true,
-      "dependencies": {
-        "@babel/helper-get-function-arity": "^7.12.10",
-        "@babel/template": "^7.12.7",
-        "@babel/types": "^7.12.11"
-      }
-    },
-    "node_modules/@babel/helper-get-function-arity": {
-      "version": "7.12.10",
-      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.12.10.tgz",
-      "integrity": "sha512-mm0n5BPjR06wh9mPQaDdXWDoll/j5UpCAPl1x8fS71GHm7HA6Ua2V4ylG1Ju8lvcTOietbPNNPaSilKj+pj+Ag==",
-      "dev": true,
-      "dependencies": {
-        "@babel/types": "^7.12.10"
-      }
-    },
-    "node_modules/@babel/helper-split-export-declaration": {
-      "version": "7.12.11",
-      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.12.11.tgz",
-      "integrity": "sha512-LsIVN8j48gHgwzfocYUSkO/hjYAOJqlpJEc7tGXcIm4cubjVUf8LGW6eWRyxEu7gA25q02p0rQUWoCI33HNS5g==",
-      "dev": true,
-      "dependencies": {
-        "@babel/types": "^7.12.11"
-      }
-    },
     "node_modules/@babel/helper-validator-identifier": {
       "version": "7.12.11",
       "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.12.11.tgz",
@@ -156,66 +107,6 @@
         "node": ">=4"
       }
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-      "version": "7.12.11",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.12.11.tgz",
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-      "dev": true,
-      "bin": {
-        "parser": "bin/babel-parser.js"
-      },
-      "engines": {
-        "node": ">=6.0.0"
-      }
-    },
-    "node_modules/@babel/template": {
-      "version": "7.12.7",
-      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.12.7.tgz",
-      "integrity": "sha512-GkDzmHS6GV7ZeXfJZ0tLRBhZcMcY0/Lnb+eEbXDBfCAcZCjrZKe6p3J4we/D24O9Y8enxWAg1cWwof59yLh2ow==",
-      "dev": true,
-      "dependencies": {
-        "@babel/code-frame": "^7.10.4",
-        "@babel/parser": "^7.12.7",
-        "@babel/types": "^7.12.7"
-      }
-    },
-    "node_modules/@babel/traverse": {
-      "version": "7.12.12",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.12.12.tgz",
-      "integrity": "sha512-s88i0X0lPy45RrLM8b9mz8RPH5FqO9G9p7ti59cToE44xFm1Q+Pjh5Gq4SXBbtb88X7Uy7pexeqRIQDDMNkL0w==",
-      "dev": true,
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-        "@babel/generator": "^7.12.11",
-        "@babel/helper-function-name": "^7.12.11",
-        "@babel/helper-split-export-declaration": "^7.12.11",
-        "@babel/parser": "^7.12.11",
-        "@babel/types": "^7.12.12",
-        "debug": "^4.1.0",
-        "globals": "^11.1.0",
-        "lodash": "^4.17.19"
-      }
-    },
-    "node_modules/@babel/traverse/node_modules/globals": {
-      "version": "11.12.0",
-      "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
-      "integrity": "sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==",
-      "dev": true,
-      "engines": {
-        "node": ">=4"
-      }
-    },
-    "node_modules/@babel/types": {
-      "version": "7.12.12",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.12.12.tgz",
-      "integrity": "sha512-lnIX7piTxOH22xE7fDXDbSHg9MM1/6ORnafpJmov5rs0kX5g4BZxeXNJLXsMRiO0U5Rb8/FvMS6xlTnTHvxonQ==",
-      "dev": true,
-      "dependencies": {
-        "@babel/helper-validator-identifier": "^7.12.11",
-        "lodash": "^4.17.19",
-        "to-fast-properties": "^2.0.0"
-      }
-    },
     "node_modules/@concordance/react": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/@concordance/react/-/react-2.0.0.tgz",
@@ -247,19 +138,18 @@
       }
     },
     "node_modules/@eslint/eslintrc": {
-      "version": "0.2.2",
-      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.2.2.tgz",
-      "integrity": "sha512-EfB5OHNYp1F4px/LI/FEnGylop7nOqkQ1LRzCM0KccA2U8tvV8w01KBv37LbO7nW4H+YhKyo2LcJhRwjjV17QQ==",
+      "version": "0.4.3",
+      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.4.3.tgz",
+      "integrity": "sha512-J6KFFz5QCYUJq3pf0mjEcCJVERbzv71PUIDczuh9JkwGEzced6CO5ADLHB1rbf/+oPBtoPfMYNOpGDzCANlbXw==",
       "dev": true,
       "dependencies": {
         "ajv": "^6.12.4",
         "debug": "^4.1.1",
         "espree": "^7.3.0",
-        "globals": "^12.1.0",
+        "globals": "^13.9.0",
         "ignore": "^4.0.6",
         "import-fresh": "^3.2.1",
         "js-yaml": "^3.13.1",
-        "lodash": "^4.17.19",
         "minimatch": "^3.0.4",
         "strip-json-comments": "^3.1.1"
       },
@@ -283,8 +173,31 @@
       "dev": true,
       "engines": {
         "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/@humanwhocodes/config-array": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.5.0.tgz",
+      "integrity": "sha512-FagtKFz74XrTl7y6HCzQpwDfXP0yhxe9lHLD1UZxjvZIcbyRz8zTFF/yYNfSfzU414eDwZ1SrO0Qvtyf+wFMQg==",
+      "dev": true,
+      "dependencies": {
+        "@humanwhocodes/object-schema": "^1.2.0",
+        "debug": "^4.1.1",
+        "minimatch": "^3.0.4"
+      },
+      "engines": {
+        "node": ">=10.10.0"
       }
     },
+    "node_modules/@humanwhocodes/object-schema": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/object-schema/-/object-schema-1.2.0.tgz",
+      "integrity": "sha512-wdppn25U8z/2yiaT6YGquE6X8sSv7hNMWSXYSSU1jGv/yd6XqjXgTDJ8KP4NgjTXfJ3GbRjeeb8RTV7a/VpM+w==",
+      "dev": true
+    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.4",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.4.tgz",
@@ -330,27 +243,27 @@
       }
     },
     "node_modules/@sinonjs/commons": {
-      "version": "1.8.2",
-      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.8.2.tgz",
-      "integrity": "sha512-sruwd86RJHdsVf/AtBoijDmUqJp3B6hF/DGC23C+JaegnDHaZyewCjoVGTdg3J0uz3Zs7NnIT05OBOmML72lQw==",
+      "version": "1.8.3",
+      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.8.3.tgz",
+      "integrity": "sha512-xkNcLAn/wZaX14RPlwizcKicDk9G3F8m2nU3L7Ukm5zBgTwiT0wsoFAHx9Jq56fJA1z/7uKGtCRu16sOUCLIHQ==",
       "dev": true,
       "dependencies": {
         "type-detect": "4.0.8"
       }
     },
     "node_modules/@sinonjs/fake-timers": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-6.0.1.tgz",
-      "integrity": "sha512-MZPUxrmFubI36XS1DI3qmI0YdN1gks62JtFZvxR67ljjSNCeK6U08Zx4msEWOXuofgqUt6zPHSi1H9fbjR/NRA==",
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-7.1.2.tgz",
+      "integrity": "sha512-iQADsW4LBMISqZ6Ci1dupJL9pprqwcVFTcOsEmQOEhW+KLCVn/Y4Jrvg2k19fIHCp+iFprriYPTdRcQR8NbUPg==",
       "dev": true,
       "dependencies": {
         "@sinonjs/commons": "^1.7.0"
       }
     },
     "node_modules/@sinonjs/samsam": {
-      "version": "5.3.1",
-      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-5.3.1.tgz",
-      "integrity": "sha512-1Hc0b1TtyfBu8ixF/tpfSHTVWKwCBLY4QJbkgnE7HcwyvT2xArDxb4K7dMgqRm3szI+LJbzmW/s4xxEhv6hwDg==",
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-6.0.2.tgz",
+      "integrity": "sha512-jxPRPp9n93ci7b8hMfJOFDPRLFYadN6FSpeROFTR4UNF4i5b+EK6m4QXPO46BDhFgRy1JuS87zAnFOzCUwMJcQ==",
       "dev": true,
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@@ -395,10 +308,13 @@
       }
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     "node_modules/acorn-jsx": {
-      "version": "5.3.1",
-      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.3.1.tgz",
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-      "dev": true
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.3.2.tgz",
+      "integrity": "sha512-rq9s+JNhf0IChjtDXxllJ7g41oZk5SlXtp0LHwyA5cejwn7vKmKp4pPri6YEePv2PU65sAsegbXtIinmDFDXgQ==",
+      "dev": true,
+      "peerDependencies": {
+        "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
+      }
     },
     "node_modules/acorn-walk": {
       "version": "8.0.2",
@@ -432,6 +348,10 @@
         "fast-json-stable-stringify": "^2.0.0",
         "json-schema-traverse": "^0.4.1",
         "uri-js": "^4.2.2"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
       }
     },
     "node_modules/ansi-align": {
@@ -671,32 +591,6 @@
         }
       }
     },
-    "node_modules/babel-eslint": {
-      "version": "10.1.0",
-      "resolved": "https://registry.npmjs.org/babel-eslint/-/babel-eslint-10.1.0.tgz",
-      "integrity": "sha512-ifWaTHQ0ce+448CYop8AdrQiBsGrnC+bMgfyKFdi6EsPLTAWG+QfyDeM6OH+FmWnKvEq5NnBMLvlBUPKQZoDSg==",
-      "dev": true,
-      "dependencies": {
-        "@babel/code-frame": "^7.0.0",
-        "@babel/parser": "^7.7.0",
-        "@babel/traverse": "^7.7.0",
-        "@babel/types": "^7.7.0",
-        "eslint-visitor-keys": "^1.0.0",
-        "resolve": "^1.12.0"
-      },
-      "engines": {
-        "node": ">=6"
-      }
-    },
-    "node_modules/babel-eslint/node_modules/eslint-visitor-keys": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-1.3.0.tgz",
-      "integrity": "sha512-6J72N8UNa462wa/KFODt/PJ3IU60SDpC3QXC1Hjc1BXXpfL2C9R5+AU7jhe0F6GREqVMh4Juu+NY7xn+6dipUQ==",
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       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -1303,9 +1197,9 @@
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-      "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
-      "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-5.0.0.tgz",
+      "integrity": "sha512-/VTCrvm5Z0JGty/BWHljh+BAiw3IK+2j87NGMu8Nwc/f48WoDAC395uomO9ZD117ZOBaHmkX1oyLvkVM/aIT3w==",
       "dev": true,
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@@ -1435,29 +1329,32 @@
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-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-7.17.0.tgz",
-      "integrity": "sha512-zJk08MiBgwuGoxes5sSQhOtibZ75pz0J35XTRlZOk9xMffhpA9BTbQZxoXZzOl5zMbleShbGwtw+1kGferfFwQ==",
+      "version": "7.32.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-7.32.0.tgz",
+      "integrity": "sha512-VHZ8gX+EDfz+97jGcgyGCyRia/dPOd6Xh9yPv8Bl1+SoaIwD+a/vlrOmGRUyOYu7MwUhc7CxqeaDZU13S4+EpA==",
       "dev": true,
       "dependencies": {
-        "@babel/code-frame": "^7.0.0",
-        "@eslint/eslintrc": "^0.2.2",
+        "@babel/code-frame": "7.12.11",
+        "@eslint/eslintrc": "^0.4.3",
+        "@humanwhocodes/config-array": "^0.5.0",
         "ajv": "^6.10.0",
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         "cross-spawn": "^7.0.2",
         "debug": "^4.0.1",
         "doctrine": "^3.0.0",
         "enquirer": "^2.3.5",
+        "escape-string-regexp": "^4.0.0",
         "eslint-scope": "^5.1.1",
         "eslint-utils": "^2.1.0",
         "eslint-visitor-keys": "^2.0.0",
         "espree": "^7.3.1",
-        "esquery": "^1.2.0",
+        "esquery": "^1.4.0",
         "esutils": "^2.0.2",
-        "file-entry-cache": "^6.0.0",
+        "fast-deep-equal": "^3.1.3",
+        "file-entry-cache": "^6.0.1",
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-        "glob-parent": "^5.0.0",
-        "globals": "^12.1.0",
+        "glob-parent": "^5.1.2",
+        "globals": "^13.6.0",
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@@ -1465,7 +1362,7 @@
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         "json-stable-stringify-without-jsonify": "^1.0.1",
         "levn": "^0.4.1",
-        "lodash": "^4.17.19",
+        "lodash.merge": "^4.6.2",
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@@ -1474,7 +1371,7 @@
         "semver": "^7.2.1",
         "strip-ansi": "^6.0.0",
         "strip-json-comments": "^3.1.0",
-        "table": "^6.0.4",
+        "table": "^6.0.9",
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       },
@@ -1483,6 +1380,9 @@
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         "node": "^10.12.0 || >=12.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
       }
     },
     "node_modules/eslint-scope": {
@@ -1528,6 +1428,18 @@
         "node": ">=10"
       }
     },
+    "node_modules/eslint/node_modules/escape-string-regexp": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz",
+      "integrity": "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==",
+      "dev": true,
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/eslint/node_modules/ignore": {
       "version": "4.0.6",
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-4.0.6.tgz",
@@ -1595,9 +1507,9 @@
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-      "version": "6.0.7",
-      "resolved": "https://registry.npmjs.org/table/-/table-6.0.7.tgz",
-      "integrity": "sha512-rxZevLGTUzWna/qBLObOe16kB2RTnnbhciwgPbMMlazz1yZGVEgnZK762xyVdVznhqxrfCeBMmMkgOOaPwjH7g==",
+      "version": "6.7.1",
+      "resolved": "https://registry.npmjs.org/table/-/table-6.7.1.tgz",
+      "integrity": "sha512-ZGum47Yi6KOOFDE8m223td53ath2enHcYLgOCjGr5ngu8bdIARQk6mN/wRMv4yMRcHnCSnHbCEha4sobQx5yWg==",
       "dev": true,
       "requires": {
-        "ajv": "^7.0.2",
-        "lodash": "^4.17.20",
+        "ajv": "^8.0.1",
+        "lodash.clonedeep": "^4.5.0",
+        "lodash.truncate": "^4.4.2",
         "slice-ansi": "^4.0.0",
-        "string-width": "^4.2.0"
+        "string-width": "^4.2.0",
+        "strip-ansi": "^6.0.0"
       },
       "dependencies": {
         "ajv": {
-          "version": "7.0.3",
-          "resolved": "https://registry.npmjs.org/ajv/-/ajv-7.0.3.tgz",
-          "integrity": "sha512-R50QRlXSxqXcQP5SvKUrw8VZeypvo12i2IX0EeR5PiZ7bEKeHWgzgo264LDadUsCU42lTJVhFikTqJwNeH34gQ==",
+          "version": "8.6.2",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.6.2.tgz",
+          "integrity": "sha512-9807RlWAgT564wT+DjeyU5OFMPjmzxVobvDFmNAhY+5zD6A2ly3jDp6sgnfyDtlIQ+7H97oc/DGCzzfu9rjw9w==",
           "dev": true,
           "requires": {
             "fast-deep-equal": "^3.1.1",
@@ -7091,12 +6938,6 @@
       "integrity": "sha1-mcW/VZWJZq9tBtg73zgA3IL67F0=",
       "dev": true
     },
-    "to-fast-properties": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
-      "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=",
-      "dev": true
-    },
     "to-readable-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/to-readable-stream/-/to-readable-stream-1.0.0.tgz",
@@ -7180,9 +7021,9 @@
       }
     },
     "uri-js": {
-      "version": "4.4.0",
-      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.0.tgz",
-      "integrity": "sha512-B0yRTzYdUCCn9n+F4+Gh4yIDtMQcaJsmYBDsTSG8g/OejKBodLQ2IHfN3bM7jUsRXndopT7OIXWdYqc1fjmV6g==",
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
+      "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
       "dev": true,
       "requires": {
         "punycode": "^2.1.0"
diff --git a/package.json b/package.json
index e98d4472..d5fdd16d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "esmock",
-  "version": "0.3.9",
+  "version": "0.4.0",
   "license": "MIT",
   "readmeFilename": "README.md",
   "description": "mock esm modules for unit-tests",
@@ -50,11 +50,10 @@
   },
   "devDependencies": {
     "ava": "^4.0.0-alpha.2",
-    "babel-eslint": "^10.1.0",
-    "eslint": "^7.17.0",
-    "form-urlencoded": "^4.2.1",
+    "eslint": "^7.32.0",
+    "form-urlencoded": "4.2.1",
     "import-local": "3.0.2",
-    "sinon": "^10.0.0"
+    "sinon": "^11.1.2"
   },
   "scripts": {
     "test": "ava --node-arguments=\"--loader=./src/esmockLoader.mjs\"",
diff --git a/spec/esmock.spec.js b/spec/esmock.spec.js
index 2988cbd4..35ff790d 100644
--- a/spec/esmock.spec.js
+++ b/spec/esmock.spec.js
@@ -244,3 +244,13 @@ test('should apply third parameter "global" definitions', async t => {
   const tplStr = main.readTemplateFile();
   t.is(tplStr, 'this value anywhere the instance imports fs, global');
 });
+
+test('returns spread-imported [object Module] default export', async t => {
+  const main = await esmock('./local/usesObjectModule.js', {
+    fs : {
+      exportedFunction : () => 'foobar'
+    }
+  });
+
+  t.is(main.exportedFunction(), 'foobar');
+});
diff --git a/spec/local/usesObjectModule.js b/spec/local/usesObjectModule.js
new file mode 100644
index 00000000..8819dd23
--- /dev/null
+++ b/spec/local/usesObjectModule.js
@@ -0,0 +1,3 @@
+import * as objectModule from 'fs';
+
+export default objectModule;
diff --git a/src/esmockModule.js b/src/esmockModule.js
index ea1a6fd9..4d654591 100644
--- a/src/esmockModule.js
+++ b/src/esmockModule.js
@@ -65,9 +65,14 @@ const esmockModuleIsESM = (mockPathFull, isesm) => {
 // return the default value directly, so that the esmock caller
 // does not need to lookup default as in "esmockedValue.default"
 const esmockModuleImportedSanitize = importedModule => {
-  if ('default' in importedModule
-    && !/boolean|string|number/.test(typeof importedModule.default)) {
-    return Object.assign(importedModule.default, importedModule);
+  const importedDefault = 'default' in importedModule
+        && importedModule.default;
+  
+  if (!/boolean|string|number/.test(typeof importedDefault)) {
+    // an example of [object Module]: import * as mod from 'fs'; export mod;
+    return Object.prototype.toString.call(importedDefault) === '[object Module]'
+      ? Object.assign({}, importedDefault, importedModule)
+      : Object.assign(importedDefault, importedModule);
   }
 
   return importedModule;