🎨 Improve error handling

src/ssn/getPatchmanifest.ts

@@ -14,7 +14,7 @@ const Decoder = new TextDecoder('utf-8');
 export default async function getPatchmanifest(product: Product): Promise<IManifest> {
   //Verify function arguments
   if (!verifyProductName(product)) {
-    throw new Error(`"${product}" is not a valid product.`);
+    throw new TypeError(`"${product}" is not a valid product.`);
   }
 
   //Download .patchmanifest file

src/ssn/getSolidpkg.ts

@@ -11,16 +11,16 @@ import verifySolidpkg from './verifySolidpkg';
 export default async function getSolidpkg(product: Product, from: number, to: number): Promise<ISolidSimple> {
   //Verify function arguments
   if (!verifyProductName(product)) {
-    throw new Error(`"${product}" is not a valid product.`);
+    throw new TypeError(`"${product}" is not a valid product.`);
   }
   if (typeof from !== 'number' || (from | 0) !== from || from < -1) {
-    throw new Error(`from must be an integer greater than or equal to -1 but it is "${from}"`);
+    throw new TypeError(`from must be an integer greater than or equal to -1 but it is "${from}"`);
   }
   if (typeof to !== 'number' || (to | 0) !== to || to < 0) {
-    throw new Error(`to must be an integer greater than or equal to 0 but it is "${to}"`);
+    throw new TypeError(`to must be an integer greater than or equal to 0 but it is "${to}"`);
   }
   if (from >= to) {
-    throw new Error(`from must be less than to but "${from}" is not less than "${to}".`);
+    throw new TypeError(`from must be less than to but "${from}" is not less than "${to}".`);
   }
 
   //Download .solidpkg file

src/ssn/readSsnFile.ts

@@ -136,9 +136,9 @@ export default function readSsnFile(buffer: ArrayBuffer): ISsnFileEntry[] {
           //skip 20 bytes: hash of new file
           pos += 40;
           break;
-        default:
+        default: //unknown field
-          //unknown field, ignore it
           pos += fieldLength;
+          throw new Error(`Unknown entry in SSN extra field: id "${fieldId}", length "${fieldLength}"`);
       }
     }
     pos += fileCommentLength;