️ Use ArrayBuffer instead of Buffer

src/getUrlContents.ts

@@ -1,6 +1,6 @@
 import * as http from 'http';
 
-export default function getUrlContents({ host, path }: {host: string, path: string}): Promise<Buffer> {
+export default function getUrlContents({ host, path }: {host: string, path: string}): Promise<ArrayBuffer> {
   return new Promise((resolve, reject) => {
     const request = http.request({
       family: 4,
@@ -23,7 +23,7 @@ export default function getUrlContents({ host, path }: {host: string, path: stri
           return reject(`Expected length ${headerLength} but received ${totalLength}`);
         }
         const fileContents = Buffer.concat(chunkList, totalLength);
-        resolve(fileContents);
+        resolve(fileContents.buffer as ArrayBuffer);
       });
     });
 

src/installPatch.ts

@@ -10,19 +10,19 @@ const Decoder = new TextDecoder('utf-8');
   //----- PATCHMANIFEST -----
   //.patchmanifest files contain a single XML file called "manifest.xml"
   const patchmanifestBuffer = await getPatchmanifest('assets_swtor_de_de');
-  console.log(patchmanifestBuffer.length, patchmanifestBuffer);
+  console.log(patchmanifestBuffer.byteLength, patchmanifestBuffer);
 
   const patchmanifestFiles = readSsnFile(patchmanifestBuffer);
   console.log(patchmanifestFiles);
 
-  const patchmanifestFile = extractFile(patchmanifestFiles[0], [new DataView(patchmanifestBuffer.buffer)]);
+  const patchmanifestFile = extractFile(patchmanifestFiles[0], [new DataView(patchmanifestBuffer)]);
   const patchmanifestXml = Decoder.decode(patchmanifestFile);
   console.log(patchmanifestXml);
 
   //----- SOLIDPKG -----
   //.solidpkg files contain a single Bencode file called "metafile.solid"
   const solidpkgBuffer = await getSolidpkg('assets_swtor_de_de', -1, 0);
-  console.log(solidpkgBuffer.length, solidpkgBuffer);
+  console.log(solidpkgBuffer.byteLength, solidpkgBuffer);
 
   const solidPkgFiles = readSsnFile(solidpkgBuffer);
   console.log(solidPkgFiles);

src/ssn/getPatchmanifest.ts

@@ -2,7 +2,7 @@ import getUrlContents from '../getUrlContents';
 import { Product } from '../interfaces/ISettings';
 import verifyProductName from '../verifyProductName';
 
-export default function getPatchmanifest(product: Product): Promise<Buffer> {
+export default function getPatchmanifest(product: Product): Promise<ArrayBuffer> {
   //Verify function arguments
   if (!verifyProductName(product)) {
     throw new Error(`"${product}" is not a valid product.`);

src/ssn/getSolidpkg.ts

@@ -2,7 +2,7 @@ import getUrlContents from '../getUrlContents';
 import { Product } from '../interfaces/ISettings';
 import verifyProductName from '../verifyProductName';
 
-export default function getSolidpkg(product: Product, from: number, to: number): Promise<Buffer> {
+export default function getSolidpkg(product: Product, from: number, to: number): Promise<ArrayBuffer> {
   //Verify function arguments
   if (!verifyProductName(product)) {
     throw new Error(`"${product}" is not a valid product.`);

src/ssn/readSsnFile.ts

@@ -14,16 +14,15 @@ const COMPRESSION_DEFLATE = 8;
 
 const Decoder = new TextDecoder('utf-8');
 
-export default function readSsnFile(buffer: Buffer): ISsnFileEntry[] {
+export default function readSsnFile(buffer: ArrayBuffer): ISsnFileEntry[] {
-  const arrayBuffer = buffer.buffer;
+  const dv = new DataView(buffer);
-  const dv = new DataView(arrayBuffer);
 
   const fileEntries: ISsnFileEntry[] = [];
 
   //--------------- READ END OF CENTRAL DIR ---------------
 
   //Go to end of file
-  let pos = buffer.length - 22; //end of central dir is at least 22 bytes long
+  let pos = buffer.byteLength - 22; //end of central dir is at least 22 bytes long
 
   //Find end of central dir
   while (pos >= 0 && dv.getUint32(pos, true) !== SIGNATURE_END_OF_CENTRAL_DIR) {
@@ -106,7 +105,7 @@ export default function readSsnFile(buffer: Buffer): ISsnFileEntry[] {
     /** relative offset of local header */
     const relOffset = dv.getUint32(pos, true); pos += 4;
     /** file name (variable size) */
-    const fileName = Decoder.decode(new DataView(arrayBuffer, pos, fileNameLength)); pos += fileNameLength;
+    const fileName = Decoder.decode(new DataView(buffer, pos, fileNameLength)); pos += fileNameLength;
 
     //read password from extra field
     const extraFieldEnd = pos + extraFieldLength;
@@ -122,7 +121,7 @@ export default function readSsnFile(buffer: Buffer): ISsnFileEntry[] {
           if (fieldLength > 120) {
             throw new Error(`Password is too long, it should be 120 characters at most but it is ${fieldLength} characters long.`);
           }
-          encodedPassword = new Uint8Array(arrayBuffer, pos, fieldLength);
+          encodedPassword = new Uint8Array(buffer, pos, fieldLength);
           break;
         }
         case 0x80AE: //diff type