fix debugging

libs/remix-debug/src/solidity-decoder/types/util.ts

@@ -57,7 +57,7 @@ export function toBN (value) {
   if (value instanceof BN) {
     return value
   } else if (value.match && value.match(/^(0x)?([a-f0-9]*)$/)) {
-    value = unpadHexString(value.replace(/^(0x)/, ''))
+    value = unpadHexString(value)
     value = new BN(value === '' ? '0' : value, 16)
   } else if (!isNaN(value)) {
     value = new BN(value)

libs/remix-lib/src/util.ts

 'use strict'
-import { BN, bufferToHex, keccak, setLengthLeft } from 'ethereumjs-util'
+import { BN, bufferToHex, keccak, setLengthLeft, intToBuffer } from 'ethereumjs-util'
 
 /*
  contains misc util: @TODO should be splitted
@@ -165,10 +165,13 @@ export function buildCallPath (index, rootCall) {
   */
 // eslint-disable-next-line camelcase
 export function sha3_256 (value) {
-  if (typeof value === 'string' && value.indexOf('0x') !== 0) {
-    value = '0x' + value
+  if (typeof value === 'string') {
+    value = Buffer.from(value.replace('0x', ''), 'hex')
   }
-  const retInBuffer: Buffer = keccak(setLengthLeft(Buffer.from(value.replace('0x', ''), 'hex'), 32))
+  if (Number.isInteger(value)) {
+    value = intToBuffer(value)
+  }
+  const retInBuffer: Buffer = keccak(setLengthLeft(value, 32))
   return bufferToHex(retInBuffer)
 }