3. Accomodate XDR additions or renames:

* This accounts for any fields that encountered a rename as part
  of the new XDR version. In this case, `readBytes` was renamed to
  `diskReadBytes` because it's measured differently as a result of
  Core's state living in memory rather than on disk in most cases.
* It also accounts for the unused extension point actually having
  a name now, so `xdr.ExtensionPoint` needs to use the structure-
  specific `xdr.SorobanTransactionDataExt`, instead.

Author: Shaptic

src/sorobandata_builder.js

@@ -41,10 +41,10 @@ export class SorobanDataBuilder {
         resources: new xdr.SorobanResources({
           footprint: new xdr.LedgerFootprint({ readOnly: [], readWrite: [] }),
           instructions: 0,
-          readBytes: 0,
+          diskReadBytes: 0,
           writeBytes: 0
         }),
-        ext: new xdr.ExtensionPoint(0),
+        ext: new xdr.SorobanTransactionDataExt(0),
         resourceFee: new xdr.Int64(0)
       });
     } else if (
@@ -88,14 +88,14 @@ export class SorobanDataBuilder {
    * by transaction simulation/preflight from a Soroban RPC server.
    *
    * @param {number} cpuInstrs      number of CPU instructions
-   * @param {number} readBytes      number of bytes being read
-   * @param {number} writeBytes     number of bytes being written
+   * @param {number} diskReadBytes  number of bytes being read from disk
+   * @param {number} writeBytes     number of bytes being written to disk/memory
    *
    * @returns {SorobanDataBuilder}
    */
-  setResources(cpuInstrs, readBytes, writeBytes) {
+  setResources(cpuInstrs, diskReadBytes, writeBytes) {
     this._data.resources().instructions(cpuInstrs);
-    this._data.resources().readBytes(readBytes);
+    this._data.resources().diskReadBytes(diskReadBytes);
     this._data.resources().writeBytes(writeBytes);
 
     return this;

test/unit/sorobandata_builder_test.js

@@ -6,11 +6,11 @@ describe('SorobanTransactionData can be built', function () {
   const c = new StellarBase.Contract(contractId);
 
   const sentinel = new xdr.SorobanTransactionData({
-    ext: new xdr.ExtensionPoint(0),
+    ext: new xdr.SorobanTransactionDataExt(0),
     resources: new xdr.SorobanResources({
       footprint: new xdr.LedgerFootprint({ readOnly: [], readWrite: [] }),
       instructions: 1,
-      readBytes: 2,
+      diskReadBytes: 2,
       writeBytes: 3
     }),
     resourceFee: new xdr.Int64(5)

types/index.d.ts

@@ -1190,7 +1190,7 @@ export class SorobanDataBuilder {
   setResourceFee(fee: IntLike): SorobanDataBuilder;
   setResources(
     cpuInstrs: number,
-    readBytes: number,
+    diskReadBytes: number,
     writeBytes: number
   ): SorobanDataBuilder;