Merge pull request #139 from zama-ai/feature/error-cause

feat: add error cause

package.json

@@ -1,6 +1,6 @@
 {
   "name": "fhevmjs",
-  "version": "0.6.0-12",
+  "version": "0.6.0-13",
   "description": "fhEVM SDK for blockchain using TFHE",
   "main": "lib/node.js",
   "types": "lib/node/node.d.ts",
@@ -52,9 +52,9 @@
     "fetch-mock": "^11.1.3",
     "keccak": "^3.0.4",
     "node-tfhe": "^0.9.1",
-    "node-tkms": "0.9.0-rc27",
+    "node-tkms": "^0.9.0-rc36",
     "tfhe": "^0.9.1",
-    "tkms": "0.9.0-rc27",
+    "tkms": "^0.9.0-rc36",
     "wasm-feature-detect": "^1.8.0"
   },
   "devDependencies": {
@@ -87,6 +87,7 @@
     "ts-loader": "^9.4.2",
     "tsc-alias": "^1.8.6",
     "tslib": "^2.5.3",
+    "typescript": "^5.7.2",
     "webpack": "^5.82.1",
     "webpack-cli": "^5.1.1",
     "webpack-merge": "^5.9.0"

src/sdk/config.ts

@@ -73,7 +73,9 @@ export const getTfheCompactPublicKey = async (
         publicKeyId: config.publicKeyId,
       };
     } catch (e) {
-      throw new Error('Invalid public key (deserialization failed)');
+      throw new Error('Invalid public key (deserialization failed)', {
+        cause: e,
+      });
     }
   } else {
     throw new Error('You must provide a public key with its public key ID.');
@@ -102,7 +104,9 @@ export const getPublicParams = async (
         },
       };
     } catch (e) {
-      throw new Error('Invalid public key (deserialization failed)');
+      throw new Error('Invalid public key (deserialization failed)', {
+        cause: e,
+      });
     }
   } else {
     throw new Error('You must provide a valid CRS with its CRS ID.');

src/sdk/encrypt.ts

@@ -281,8 +281,7 @@ export const createEncryptedInput =
           const response = await fetch(`${gateway}verify_proven_ct`, options);
           json = await response.json();
         } catch (e) {
-          console.log('verify_proven_ct failed with error', e);
-          throw new Error("Gateway didn't response correctly");
+          throw new Error("Gateway didn't response correctly", { cause: e });
         }
 
         // Note that the hex strings returned by the gateway do have have the 0x prefix

src/sdk/network.ts

@@ -102,8 +102,9 @@ export const getKeysFromGateway = async (
     } else {
       throw new Error('No public key available');
     }
-  } catch (error) {
-    console.log('error', error);
-    throw new Error('Impossible to fetch public key: wrong gateway url.');
+  } catch (e) {
+    throw new Error('Impossible to fetch public key: wrong gateway url.', {
+      cause: e,
+    });
   }
 };

src/sdk/reencrypt.ts

@@ -60,19 +60,19 @@ export const reencryptRequest =
       pubKey = u8vec_to_cryptobox_pk(fromHexString(publicKey));
       privKey = u8vec_to_cryptobox_sk(fromHexString(privateKey));
     } catch (e) {
-      throw new Error('Invalid public or private key');
+      throw new Error('Invalid public or private key', { cause: e });
     }
 
     let json;
     try {
       const response = await fetch(`${gatewayUrl}reencrypt`, options);
       json = await response.json();
     } catch (e) {
-      throw new Error("Gateway didn't response correctly");
+      throw new Error("Gateway didn't response correctly", { cause: e });
     }
 
     if (json.status === 'failure') {
-      throw new Error("The reencryption didn't succeed");
+      throw new Error("The reencryption didn't succeed", { cause: json });
     }
 
     const client = new_client(kmsSignatures, userAddress, 'default');
@@ -109,6 +109,6 @@ export const reencryptRequest =
 
       return bytesToBigInt(decryption);
     } catch (e) {
-      throw new Error('An error occured during decryption');
+      throw new Error('An error occured during decryption', { cause: e });
     }
   };

tsconfig.json

@@ -5,7 +5,7 @@
     "outDir": "bundle",
     "declaration": false,
     "target": "es5",
-    "lib": ["DOM", "WebWorker"],
+    "lib": ["es2022", "DOM", "WebWorker"],
     "module": "commonjs",
     "skipLibCheck": true,
     "esModuleInterop": true,

tsconfig.rollup.json

@@ -3,8 +3,8 @@
     "rootDir": "src",
     "outDir": "lib",
     "declaration": true,
-    "target": "ES2020",
-    "lib": ["DOM", "WebWorker"],
+    "target": "ES2022",
+    "lib": ["es2022", "DOM", "WebWorker"],
     "module": "esnext",
     "skipLibCheck": true,
     "esModuleInterop": true,