diff --git a/__tests__/classify.test.ts b/__tests__/classify.test.ts
deleted file mode 100644
index 68f3ef5..0000000
--- a/__tests__/classify.test.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-import "@tensorflow/tfjs-backend-wasm";
-import "isomorphic-unfetch";
-
-import { classify, classifyAsync } from "tensornet";
-import { SAMPLE } from "../__mocks__/sample";
-import { ready, setBackend } from "@tensorflow/tfjs-core";
-
-describe("classify base64 image using tensorflow Models", () => {
-  beforeAll(async () => {
-    await setBackend("wasm"); // set tensorflow wasm backend
-    await ready();
-  });
-
-  test("use pure js", async () => {
-    const classification = await classify(SAMPLE);
-
-    expect(classification && classification[0].className).toEqual(
-      "Siamese cat, Siamese"
-    );
-  });
-
-  test("use sharp", async () => {
-    const classification = await classifyAsync(SAMPLE);
-
-    expect(classification && classification[0].className).toEqual(
-      "Siamese cat, Siamese"
-    );
-  });
-});
diff --git a/__tests__/convert.test.ts b/__tests__/convert.test.ts
index faf5384..69b7792 100644
--- a/__tests__/convert.test.ts
+++ b/__tests__/convert.test.ts
@@ -4,11 +4,13 @@ import { convertAsync } from "../src/convert-async";
 import { SAMPLE } from "../__mocks__/sample";
 import { ready, setBackend } from "@tensorflow/tfjs-core";
 
+beforeAll(async () => {
+  await setBackend("wasm"); // set tensorflow wasm backend
+  await ready();
+});
+
 describe("convert base64 to tensor", () => {
   test("use pure js", async () => {
-    await setBackend("wasm"); // set tensorflow wasm backend
-    await ready();
-
     const tensor = convert(SAMPLE);
 
     expect(tensor).toEqual({
@@ -27,9 +29,6 @@ describe("convert base64 to tensor", () => {
   });
 
   test("use sharp", async () => {
-    await setBackend("wasm"); // set tensorflow wasm backend
-    await ready();
-
     const tensor = await convertAsync(SAMPLE);
 
     expect(tensor).toEqual({
@@ -48,25 +47,16 @@ describe("convert base64 to tensor", () => {
   });
 
   test("handle missing jpeg data sync", async () => {
-    await setBackend("wasm"); // set tensorflow wasm backend
-    await ready();
-
     const tensor = convert("");
 
     expect(tensor).toEqual(null);
   });
   test("handle missing jpeg data async", async () => {
-    await setBackend("wasm"); // set tensorflow wasm backend
-    await ready();
-
     const tensor = await convertAsync("");
 
     expect(tensor).toEqual(null);
   });
   test("handle missing jpeg data error async", async () => {
-    await setBackend("wasm"); // set tensorflow wasm backend
-    await ready();
-
     return expect(convertAsync("dqdw")).rejects.toEqual(
       new Error("Input Buffer is empty")
     );
diff --git a/package-lock.json b/package-lock.json
index 74d8bf5..aa61f5a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "base64-to-tensor",
-  "version": "1.2.9",
+  "version": "1.2.11",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "base64-to-tensor",
-      "version": "1.2.9",
+      "version": "1.2.11",
       "license": "MIT",
       "devDependencies": {
         "@swc/core": "^1.2.204",
@@ -18,14 +18,11 @@
         "@typescript-eslint/eslint-plugin": "^5.28.0",
         "@typescript-eslint/parser": "^5.28.0",
         "eslint": "^8.18.0",
-        "isomorphic-unfetch": "^3.1.0",
         "jest": "^26.6.3",
         "jest-config": "^26.6.3",
         "jpeg-js": "^0.4.4",
-        "sharp": "^0.30.6",
-        "tensornet": "^1.0.9",
+        "sharp": "^0.32.4",
         "ts-node-dev": "^2.0.0",
-        "tscpaths": "^0.0.9",
         "typescript": "^3.7.5"
       },
       "peerDependencies": {
@@ -1050,19 +1047,6 @@
         "@jridgewell/sourcemap-codec": "^1.4.10"
       }
     },
-    "node_modules/@mrmlnc/readdir-enhanced": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/@mrmlnc/readdir-enhanced/-/readdir-enhanced-2.2.1.tgz",
-      "integrity": "sha512-bPHp6Ji8b41szTOcaP63VlnbbO5Ny6dwAATtY6JTjh5N2OLrb5Qk/Th5cRkRQhkWCt+EJsYrNB0MiL+Gpn6e3g==",
-      "dev": true,
-      "dependencies": {
-        "call-me-maybe": "^1.0.1",
-        "glob-to-regexp": "^0.3.0"
-      },
-      "engines": {
-        "node": ">=4"
-      }
-    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -1085,15 +1069,6 @@
         "node": ">= 8"
       }
     },
-    "node_modules/@nodelib/fs.stat": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz",
-      "integrity": "sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==",
-      "dev": true,
-      "engines": {
-        "node": ">= 6"
-      }
-    },
     "node_modules/@nodelib/fs.walk": {
       "version": "1.2.8",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.8.tgz",
@@ -1379,26 +1354,6 @@
         "@swc/core": "*"
       }
     },
-    "node_modules/@tensorflow-models/coco-ssd": {
-      "version": "2.2.2",
-      "resolved": "https://registry.npmjs.org/@tensorflow-models/coco-ssd/-/coco-ssd-2.2.2.tgz",
-      "integrity": "sha512-Jey2JscmKEValcFZH2ZLz14s8KPRmVtfJ0d0M3dPhvBp9dJiGNanVXr/pJAY5OS7emKj9uSciGhdkHWXY9Hovw==",
-      "dev": true,
-      "peerDependencies": {
-        "@tensorflow/tfjs-converter": "^3.3.0",
-        "@tensorflow/tfjs-core": "^3.3.0"
-      }
-    },
-    "node_modules/@tensorflow-models/mobilenet": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/@tensorflow-models/mobilenet/-/mobilenet-2.1.0.tgz",
-      "integrity": "sha512-JjqT9ijHDFA2FEpUGWg7H2lQ0GrMuE2VmiCRBYmUew6b4JKht8LXDjG5HxZh95YH6c/25sZWTpGeHbquloH+hw==",
-      "dev": true,
-      "peerDependencies": {
-        "@tensorflow/tfjs-converter": "^3.1.0",
-        "@tensorflow/tfjs-core": "^3.1.0"
-      }
-    },
     "node_modules/@tensorflow/tfjs-backend-cpu": {
       "version": "3.18.0",
       "resolved": "https://registry.npmjs.org/@tensorflow/tfjs-backend-cpu/-/tfjs-backend-cpu-3.18.0.tgz",
@@ -1428,15 +1383,6 @@
         "@tensorflow/tfjs-core": "3.18.0"
       }
     },
-    "node_modules/@tensorflow/tfjs-converter": {
-      "version": "3.18.0",
-      "resolved": "https://registry.npmjs.org/@tensorflow/tfjs-converter/-/tfjs-converter-3.18.0.tgz",
-      "integrity": "sha512-hpChA+zVNQOVwRnCfqDb1WI9jbEAKA6DuEm4m75Zb3dIlE6VVooDmAaHBhlc++z2q2G1sBzF9A4Bv48SUpN6vA==",
-      "dev": true,
-      "peerDependencies": {
-        "@tensorflow/tfjs-core": "3.18.0"
-      }
-    },
     "node_modules/@tensorflow/tfjs-core": {
       "version": "3.18.0",
       "resolved": "https://registry.npmjs.org/@tensorflow/tfjs-core/-/tfjs-core-3.18.0.tgz",
@@ -1536,16 +1482,6 @@
       "integrity": "sha512-QSb9ojDincskc+uKMI0KXp8e1NALFINCrMlp8VGKGcTSxeEyRTTKyjWw75NYrCZHUsVEEEpr1tYHpbtaC++/sQ==",
       "dev": true
     },
-    "node_modules/@types/glob": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/@types/glob/-/glob-7.2.0.tgz",
-      "integrity": "sha512-ZUxbzKl0IfJILTS6t7ip5fQQM/J3TJYubDm3nMbgubNNYS62eXeUpoLUC8/7fJNiFYHTrGPQn7hspDUzIHX3UA==",
-      "dev": true,
-      "dependencies": {
-        "@types/minimatch": "*",
-        "@types/node": "*"
-      }
-    },
     "node_modules/@types/graceful-fs": {
       "version": "4.1.5",
       "resolved": "https://registry.npmjs.org/@types/graceful-fs/-/graceful-fs-4.1.5.tgz",
@@ -1601,12 +1537,6 @@
       "integrity": "sha512-MqTGEo5bj5t157U6fA/BiDynNkn0YknVdh48CMPkTSpFTVmvao5UQmm7uEF6xBEo7qIMAlY/JSleYaE6VOdpaA==",
       "dev": true
     },
-    "node_modules/@types/minimatch": {
-      "version": "3.0.5",
-      "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.5.tgz",
-      "integrity": "sha512-Klz949h02Gz2uZCMGwDUSDS1YBlTdDDgbWHi+81l29tQALUtvz4rAYi5uoVhE5Lagoq6DeqAUlbrHvW/mXDgdQ==",
-      "dev": true
-    },
     "node_modules/@types/node": {
       "version": "18.0.0",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-18.0.0.tgz",
@@ -2212,27 +2142,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/array-union": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
-      "integrity": "sha512-Dxr6QJj/RdU/hCaBjOfxW+q6lyuVE6JFWIrAUpuOOhoJJoQ99cUn3igRaHVB5P9WrgFVN0FfArM3x0cueOU8ng==",
-      "dev": true,
-      "dependencies": {
-        "array-uniq": "^1.0.1"
-      },
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
-    "node_modules/array-uniq": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha512-MNha4BWQ6JbwhFhj03YK552f7cb3AzoE8SzeljgChvL1dl3IcvggXVz1DilzySZkCja+CXuZbdW7yATchWn8/Q==",
-      "dev": true,
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/array-unique": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
@@ -2269,6 +2178,12 @@
         "node": ">= 4.5.0"
       }
     },
+    "node_modules/b4a": {
+      "version": "1.6.4",
+      "resolved": "https://registry.npmjs.org/b4a/-/b4a-1.6.4.tgz",
+      "integrity": "sha512-fpWrvyVHEKyeEvbKZTVOeZF3VSKKWtJxFIxX/jaVPf+cLbGUSitjb49pHLqPV2BUNNZ0LcoeEGfE/YCpyDYHIw==",
+      "dev": true
+    },
     "node_modules/babel-jest": {
       "version": "26.6.3",
       "resolved": "https://registry.npmjs.org/babel-jest/-/babel-jest-26.6.3.tgz",
@@ -2433,17 +2348,6 @@
         }
       ]
     },
-    "node_modules/base64-to-tensor": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/base64-to-tensor/-/base64-to-tensor-1.2.4.tgz",
-      "integrity": "sha512-f1LtcRsCs7Ro0Ef7ySLKT/v0ZABIXOGi+WEAv3vygWvEILrT26wU+C3l5XYsGC9k48pN/wVuXnTPcHMCTOSfHQ==",
-      "dev": true,
-      "peerDependencies": {
-        "@tensorflow/tfjs-core": "*",
-        "jpeg-js": "*",
-        "sharp": "*"
-      }
-    },
     "node_modules/binary-extensions": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.2.0.tgz",
@@ -2580,12 +2484,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/call-me-maybe": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/call-me-maybe/-/call-me-maybe-1.0.1.tgz",
-      "integrity": "sha512-wCyFsDQkKPwwF8BDwOiWNx/9K45L/hvggQiDbve+viMNMQnWhrlYIuBk09offfwCRtCO9P6XwUttufzU11WCVw==",
-      "dev": true
-    },
     "node_modules/callsites": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
@@ -2905,12 +2803,6 @@
         "node": ">= 0.8"
       }
     },
-    "node_modules/commander": {
-      "version": "2.20.3",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
-      "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
-      "dev": true
-    },
     "node_modules/component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -3102,9 +2994,9 @@
       }
     },
     "node_modules/detect-libc": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.0.1.tgz",
-      "integrity": "sha512-463v3ZeIrcWtdgIg6vI6XUncguvr2TnGl4SzDXinkt9mSLpBJKXT3mW6xT3VQdDN11+WVs29pgvivTc4Lp8v+w==",
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.0.2.tgz",
+      "integrity": "sha512-UX6sGumvvqSaXgdKGUsgZWqcUyIXZ/vZTrlRT/iobiKhGL0zL4d3osHj3uqllWJK+i+sixDS/3COVEOFbupFyw==",
       "dev": true,
       "engines": {
         "node": ">=8"
@@ -3137,18 +3029,6 @@
         "node": ">= 10.14.2"
       }
     },
-    "node_modules/dir-glob": {
-      "version": "2.2.2",
-      "resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-2.2.2.tgz",
-      "integrity": "sha512-f9LBi5QWzIW3I6e//uxZoLBlUt9kcp66qo0sSCxL6YZKc75R1c4MFCoe/LaZiBGmgujvQdxc5Bn3QhfyvK5Hsw==",
-      "dev": true,
-      "dependencies": {
-        "path-type": "^3.0.0"
-      },
-      "engines": {
-        "node": ">=4"
-      }
-    },
     "node_modules/doctrine": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
@@ -3856,152 +3736,11 @@
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
       "dev": true
     },
-    "node_modules/fast-glob": {
-      "version": "2.2.7",
-      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-2.2.7.tgz",
-      "integrity": "sha512-g1KuQwHOZAmOZMuBtHdxDtju+T2RT8jgCC9aANsbpdiDDTSnjgfuVsIBNKbUeJI3oKMRExcfNDtJl4OhbffMsw==",
-      "dev": true,
-      "dependencies": {
-        "@mrmlnc/readdir-enhanced": "^2.2.1",
-        "@nodelib/fs.stat": "^1.1.2",
-        "glob-parent": "^3.1.0",
-        "is-glob": "^4.0.0",
-        "merge2": "^1.2.3",
-        "micromatch": "^3.1.10"
-      },
-      "engines": {
-        "node": ">=4.0.0"
-      }
-    },
-    "node_modules/fast-glob/node_modules/braces": {
-      "version": "2.3.2",
-      "resolved": "https://registry.npmjs.org/braces/-/braces-2.3.2.tgz",
-      "integrity": "sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==",
-      "dev": true,
-      "dependencies": {
-        "arr-flatten": "^1.1.0",
-        "array-unique": "^0.3.2",
-        "extend-shallow": "^2.0.1",
-        "fill-range": "^4.0.0",
-        "isobject": "^3.0.1",
-        "repeat-element": "^1.1.2",
-        "snapdragon": "^0.8.1",
-        "snapdragon-node": "^2.0.1",
-        "split-string": "^3.0.2",
-        "to-regex": "^3.0.1"
-      },
-      "engines": {
-        "node": ">=0.10.0"
-      }
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-    "node_modules/fast-glob/node_modules/braces/node_modules/extend-shallow": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
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-      "integrity": "sha512-T2ZUsdZFHgA3u4e5PfPbjd7HDDpxPnQb5jN0SrDsjNSuVXHJqtwTnWqG0B1jZrgmJ/7lj1EmVIByWt1gxGkWvg==",
-      "dev": true,
-      "requires": {
-        "pify": "^3.0.0"
-      },
-      "dependencies": {
-        "pify": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
-          "integrity": "sha512-C3FsVNH1udSEX48gGX1xfvwTWfsYWj5U+8/uK15BGzIGrKoUpghX8hWZwa/OFnakBiiVNmBvemTJR5mcy7iPcg==",
-          "dev": true
-        }
-      }
-    },
     "picocolors": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz",
@@ -13491,12 +12822,6 @@
       "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
       "dev": true
     },
-    "pify": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
-      "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
-      "dev": true
-    },
     "pirates": {
       "version": "4.0.5",
       "resolved": "https://registry.npmjs.org/pirates/-/pirates-4.0.5.tgz",
@@ -13594,6 +12919,12 @@
       "integrity": "sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A==",
       "dev": true
     },
+    "queue-tick": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/queue-tick/-/queue-tick-1.0.1.tgz",
+      "integrity": "sha512-kJt5qhMxoszgU/62PLP1CJytzd2NKetjSRnyuj31fDd3Rlcz3fzlFdFLD1SItunPwyqEOkca6GbV612BWfaBag==",
+      "dev": true
+    },
     "rc": {
       "version": "1.2.8",
       "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
@@ -14098,29 +13429,51 @@
       }
     },
     "sharp": {
-      "version": "0.30.6",
-      "resolved": "https://registry.npmjs.org/sharp/-/sharp-0.30.6.tgz",
-      "integrity": "sha512-lSdVxFxcndzcXggDrak6ozdGJgmIgES9YVZWtAFrwi+a/H5vModaf51TghBtMPw+71sLxUsTy2j+aB7qLIODQg==",
+      "version": "0.32.4",
+      "resolved": "https://registry.npmjs.org/sharp/-/sharp-0.32.4.tgz",
+      "integrity": "sha512-exUnZewqVZC6UXqXuQ8fyJJv0M968feBi04jb9GcUHrWtkRoAKnbJt8IfwT4NJs7FskArbJ14JAFGVuooszoGg==",
       "dev": true,
       "requires": {
         "color": "^4.2.3",
-        "detect-libc": "^2.0.1",
-        "node-addon-api": "^5.0.0",
-        "prebuild-install": "^7.1.0",
-        "semver": "^7.3.7",
+        "detect-libc": "^2.0.2",
+        "node-addon-api": "^6.1.0",
+        "prebuild-install": "^7.1.1",
+        "semver": "^7.5.4",
         "simple-get": "^4.0.1",
-        "tar-fs": "^2.1.1",
+        "tar-fs": "^3.0.4",
         "tunnel-agent": "^0.6.0"
       },
       "dependencies": {
         "semver": {
-          "version": "7.3.7",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.7.tgz",
-          "integrity": "sha512-QlYTucUYOews+WeEujDoEGziz4K6c47V/Bd+LjSSYcA94p+DmINdf7ncaUinThfvZyu13lN9OY1XDxt8C0Tw0g==",
+          "version": "7.5.4",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+          "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
           "dev": true,
           "requires": {
             "lru-cache": "^6.0.0"
           }
+        },
+        "tar-fs": {
+          "version": "3.0.4",
+          "resolved": "https://registry.npmjs.org/tar-fs/-/tar-fs-3.0.4.tgz",
+          "integrity": "sha512-5AFQU8b9qLfZCX9zp2duONhPmZv0hGYiBPJsyUdqMjzq/mqVpy/rEUSeHk1+YitmxugaptgBh5oDGU3VsAJq4w==",
+          "dev": true,
+          "requires": {
+            "mkdirp-classic": "^0.5.2",
+            "pump": "^3.0.0",
+            "tar-stream": "^3.1.5"
+          }
+        },
+        "tar-stream": {
+          "version": "3.1.6",
+          "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-3.1.6.tgz",
+          "integrity": "sha512-B/UyjYwPpMBv+PaFSWAmtYjwdrlEaZQEhMIBFNC5oEG8lpiW8XjcSdmEaClj28ArfKScKHs2nshz3k2le6crsg==",
+          "dev": true,
+          "requires": {
+            "b4a": "^1.6.4",
+            "fast-fifo": "^1.2.0",
+            "streamx": "^2.15.0"
+          }
         }
       }
     },
@@ -14529,6 +13882,16 @@
         }
       }
     },
+    "streamx": {
+      "version": "2.15.0",
+      "resolved": "https://registry.npmjs.org/streamx/-/streamx-2.15.0.tgz",
+      "integrity": "sha512-HcxY6ncGjjklGs1xsP1aR71INYcsXFJet5CU1CHqihQ2J5nOsbd4OjgjHO42w/4QNv9gZb3BueV+Vxok5pLEXg==",
+      "dev": true,
+      "requires": {
+        "fast-fifo": "^1.1.0",
+        "queue-tick": "^1.0.1"
+      }
+    },
     "string_decoder": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.3.0.tgz",
@@ -14656,18 +14019,6 @@
         "readable-stream": "^3.1.1"
       }
     },
-    "tensornet": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/tensornet/-/tensornet-1.0.9.tgz",
-      "integrity": "sha512-FGEObe/A5op0vIA75p4a/luzTxiTHSLjawMCLBi1xj5OXdxfIqU+cq4zg8jYwYzBQJyJEhiszmx/dEf6x7PPow==",
-      "dev": true,
-      "requires": {
-        "@tensorflow-models/coco-ssd": "^2.2.2",
-        "@tensorflow-models/mobilenet": "^2.1.0",
-        "@tensorflow/tfjs-converter": "^3.18.0",
-        "base64-to-tensor": "1.2.4"
-      }
-    },
     "terminal-link": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/terminal-link/-/terminal-link-2.1.1.tgz",
@@ -14858,16 +14209,6 @@
         }
       }
     },
-    "tscpaths": {
-      "version": "0.0.9",
-      "resolved": "https://registry.npmjs.org/tscpaths/-/tscpaths-0.0.9.tgz",
-      "integrity": "sha512-tz4qimSJTCjYtHVsoY7pvxLcxhmhgmwzm7fyMEiL3/kPFFVyUuZOwuwcWwjkAsIrSUKJK22A7fNuJUwxzQ+H+w==",
-      "dev": true,
-      "requires": {
-        "commander": "^2.20.0",
-        "globby": "^9.2.0"
-      }
-    },
     "tslib": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
@@ -14928,12 +14269,6 @@
       "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
       "dev": true
     },
-    "unfetch": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/unfetch/-/unfetch-4.2.0.tgz",
-      "integrity": "sha512-F9p7yYCn6cIW9El1zi0HI6vqpeIvBsr3dSuRO6Xuppb1u5rXpCPmMvLSyECLhybr9isec8Ohl0hPekMVrEinDA==",
-      "dev": true
-    },
     "union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
diff --git a/package.json b/package.json
index 2c7ba74..12335b0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "base64-to-tensor",
-  "version": "1.2.9",
+  "version": "1.2.11",
   "description": "a pure js convert a base64 to a tensor object for node",
   "main": "dist/index.js",
   "scripts": {
@@ -31,14 +31,11 @@
     "@typescript-eslint/eslint-plugin": "^5.28.0",
     "@typescript-eslint/parser": "^5.28.0",
     "eslint": "^8.18.0",
-    "isomorphic-unfetch": "^3.1.0",
     "jest": "^26.6.3",
     "jest-config": "^26.6.3",
     "jpeg-js": "^0.4.4",
-    "sharp": "^0.30.6",
-    "tensornet": "^1.0.9",
+    "sharp": "^0.32.4",
     "ts-node-dev": "^2.0.0",
-    "tscpaths": "^0.0.9",
     "typescript": "^3.7.5"
   },
   "peerDependencies": {
diff --git a/src/convert-async.ts b/src/convert-async.ts
index b96f4e4..b6836f5 100644
--- a/src/convert-async.ts
+++ b/src/convert-async.ts
@@ -16,6 +16,8 @@ export const convertAsync = async (base64: string) => {
   return await decodeImageAsync(typedArray);
 };
 
+let sharp;
+
 /**
  * Decode a Uint8Array into Tensor3d
  *
@@ -23,10 +25,11 @@ export const convertAsync = async (base64: string) => {
  * @returns tf.Tensor3D
  */
 export const decodeImageAsync = async (contents: Uint8Array) => {
-  const sharp = await import("sharp");
+  if(!sharp) {
+    sharp = (await import("sharp")).default;
+  }
 
-  const { data, info } = await sharp
-    .default(Buffer.from(contents), { unlimited: true })
+  const { data, info } = await sharp(Buffer.from(contents), { unlimited: true })
     .toFormat("jpeg", { mozjpeg: true })
     .raw()
     .toBuffer({ resolveWithObject: true });