From 95f47790ed7ebfd7246a02f8e46d5c7c005c5db2 Mon Sep 17 00:00:00 2001
From: acolytec3 <17355484+acolytec3@users.noreply.github.com>
Date: Mon, 4 Apr 2022 07:46:07 -0400
Subject: [PATCH] util: move misplaced functions (#1825)

* util: move misplaced functions

* add unpadBuffer back

* Fix tttttttttttttypo

* make unpadHexString return Hex String!
---
 packages/util/src/account.ts     |  4 ++--
 packages/util/src/bytes.ts       | 18 +++++++++++++++++-
 packages/util/src/types.ts       | 22 +---------------------
 packages/util/test/bytes.spec.ts | 17 ++++++++++++++++-
 packages/util/test/types.spec.ts | 14 --------------
 5 files changed, 36 insertions(+), 39 deletions(-)

diff --git a/packages/util/src/account.ts b/packages/util/src/account.ts
index 0d93356daa..348beb6823 100644
--- a/packages/util/src/account.ts
+++ b/packages/util/src/account.ts
@@ -2,10 +2,10 @@ import { rlp } from './externals'
 import { Point, utils } from 'ethereum-cryptography/secp256k1'
 import { stripHexPrefix } from './internal'
 import { KECCAK256_RLP, KECCAK256_NULL } from './constants'
-import { zeros, bufferToHex, toBuffer, bufferToBigInt } from './bytes'
+import { zeros, bufferToHex, toBuffer, bufferToBigInt, bigIntToUnpaddedBuffer } from './bytes'
 import { keccak, keccak256, keccakFromString, rlphash } from './hash'
 import { assertIsString, assertIsHexString, assertIsBuffer } from './helpers'
-import { BigIntLike, BufferLike, bigIntToUnpaddedBuffer } from './types'
+import { BigIntLike, BufferLike } from './types'
 
 const _0n = BigInt(0)
 
diff --git a/packages/util/src/bytes.ts b/packages/util/src/bytes.ts
index e5a81d33c6..3b7594b328 100644
--- a/packages/util/src/bytes.ts
+++ b/packages/util/src/bytes.ts
@@ -129,7 +129,7 @@ export const unpadArray = function (a: number[]): number[] {
 export const unpadHexString = function (a: string): string {
   assertIsHexString(a)
   a = stripHexPrefix(a)
-  return stripZeros(a) as string
+  return ('0x' + stripZeros(a)) as string
 }
 
 export type ToBufferInputTypes =
@@ -353,3 +353,19 @@ export function bufArrToArr(arr: Buffer | NestedBufferArray): Uint8Array | Neste
   }
   return arr.map((a) => bufArrToArr(a))
 }
+
+/**
+ * Converts a {@link bigint} to a `0x` prefixed hex string
+ */
+export const bigIntToHex = (num: bigint) => {
+  return '0x' + num.toString(16)
+}
+
+/**
+ * Convert value from bigint to an unpadded Buffer
+ * (useful for RLP transport)
+ * @param value value to convert
+ */
+export function bigIntToUnpaddedBuffer(value: bigint): Buffer {
+  return unpadBuffer(bigIntToBuffer(value))
+}
diff --git a/packages/util/src/types.ts b/packages/util/src/types.ts
index 1e54cf60e3..f1a620c8af 100644
--- a/packages/util/src/types.ts
+++ b/packages/util/src/types.ts
@@ -1,13 +1,6 @@
 import { isHexString } from './internal'
 import { Address } from './address'
-import {
-  unpadBuffer,
-  toBuffer,
-  ToBufferInputTypes,
-  bigIntToBuffer,
-  bufferToBigInt,
-  bufferToHex,
-} from './bytes'
+import { toBuffer, ToBufferInputTypes, bufferToBigInt, bufferToHex } from './bytes'
 
 /*
  * A type that represents an input that can be converted to a BigInt.
@@ -55,15 +48,6 @@ export interface TransformableToBuffer {
 export type NestedUint8Array = Array<Uint8Array | NestedUint8Array>
 export type NestedBufferArray = Array<Buffer | NestedBufferArray>
 
-/**
- * Convert value from bigint to an unpadded Buffer
- * (useful for RLP transport)
- * @param value value to convert
- */
-export function bigIntToUnpaddedBuffer(value: bigint): Buffer {
-  return unpadBuffer(bigIntToBuffer(value))
-}
-
 /**
  * Type output options
  */
@@ -134,7 +118,3 @@ export function toType<T extends TypeOutput>(
       throw new Error('unknown outputType')
   }
 }
-
-export const bigIntToHex = (num: bigint) => {
-  return '0x' + num.toString(16)
-}
diff --git a/packages/util/test/bytes.spec.ts b/packages/util/test/bytes.spec.ts
index 95fc5c932d..6ba432cca4 100644
--- a/packages/util/test/bytes.spec.ts
+++ b/packages/util/test/bytes.spec.ts
@@ -24,6 +24,8 @@ import {
   validateNoLeadingZeroes,
   bufferToBigInt,
   bigIntToBuffer,
+  bigIntToUnpaddedBuffer,
+  bigIntToHex,
 } from '../src'
 
 tape('zeros function', function (t) {
@@ -94,7 +96,7 @@ tape('unpadHexString', function (t) {
   t.test('should unpad a hex prefixed string', function (st) {
     const str = '0x0000000006600'
     const r = unpadHexString(str)
-    st.equal(r, '6600')
+    st.equal(r, '0x6600')
     st.end()
   })
   t.test('should throw if input is not hex-prefixed', function (st) {
@@ -456,3 +458,16 @@ tape('bigIntToBuffer', (st) => {
   st.deepEqual(toBuffer('0x123'), bigIntToBuffer(num))
   st.end()
 })
+
+tape('bigIntToUnpaddedBuffer', function (t) {
+  t.test('should equal unpadded buffer value', function (st) {
+    st.ok(bigIntToUnpaddedBuffer(BigInt(0)).equals(Buffer.from([])))
+    st.ok(bigIntToUnpaddedBuffer(BigInt(100)).equals(Buffer.from('64', 'hex')))
+    st.end()
+  })
+})
+
+tape('bigIntToHex', (st) => {
+  st.equal(bigIntToHex(BigInt(1)), '0x1')
+  st.end()
+})
diff --git a/packages/util/test/types.spec.ts b/packages/util/test/types.spec.ts
index ec009b22f1..844ba21c26 100644
--- a/packages/util/test/types.spec.ts
+++ b/packages/util/test/types.spec.ts
@@ -5,7 +5,6 @@ import {
   intToBuffer,
   bufferToHex,
   intToHex,
-  bigIntToUnpaddedBuffer,
   toBuffer,
   bigIntToHex,
   bigIntToBuffer,
@@ -135,16 +134,3 @@ tape('toType', function (t) {
     })
   })
 })
-
-tape('bigIntToUnpaddedBuffer', function (t) {
-  t.test('should equal unpadded buffer value', function (st) {
-    st.ok(bigIntToUnpaddedBuffer(BigInt(0)).equals(Buffer.from([])))
-    st.ok(bigIntToUnpaddedBuffer(BigInt(100)).equals(Buffer.from('64', 'hex')))
-    st.end()
-  })
-})
-
-tape('bigIntToHex', (st) => {
-  st.equal(bigIntToHex(BigInt(1)), '0x1')
-  st.end()
-})