hex2buf -> hexStringToBuffer && use buffer.from in internals

src/programs/dev.ts

@@ -2,7 +2,7 @@ import ExtrinsicBaseClass from '../extrinsic'
 import { ApiPromise } from '@polkadot/api'
 import { Signer } from '../keys/types/internal'
 import { SubmittableExtrinsic } from '@polkadot/api/types'
-import { hex2buf, stripHexPrefix } from '../utils'
+import { hexStringToBuffer, stripHexPrefix } from '../utils'
 import * as util from '@polkadot/util'
 import { HexString } from '../keys/types/json'
 
@@ -140,7 +140,7 @@ export default class ProgramDev extends ExtrinsicBaseClass {
 
   #formatProgramInfo (programInfo): ProgramInfo {
     const { interfaceDescription, deployer, refCounter } = programInfo
-    const bytecode = hex2buf(stripHexPrefix(programInfo.bytecode)) // Convert hex string to ArrayBuffer
+    const bytecode = hexStringToBuffer(stripHexPrefix(programInfo.bytecode)) // Convert hex string to ArrayBuffer
     return { interfaceDescription, deployer, refCounter, bytecode }
   }
 }

src/utils/index.ts

@@ -140,12 +140,8 @@ export function toHex (str: any) {
  * @returns {ArrayBuffer} The ArrayBuffer representation of the hexadecimal string.
  */
 
-export function hex2buf (hex: string): ArrayBuffer {
-  const bytes = new Uint8Array(Math.ceil(hex.length / 2))
-  for (let i = 0; i < bytes.length; i++) {
-    bytes[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16)
-  }
-  return bytes.buffer
+export function hexStringToBuffer (hex: string): ArrayBuffer {
+  return Buffer.from(hex, 'hex')
 }
 
 export function hexStringToUint8Array (hex: string): Uint8Array {

tests/programs-dev.test.ts

@@ -77,7 +77,7 @@ test('Programs#dev: all methods', async (t) => {
   )
 
   t.deepEqual(
-    Buffer.from(noopProgramOnChain.bytecode),
+    noopProgramOnChain.bytecode,
     noopProgram,
     'Whats on chain should match what was deployed'
   )