Remove Big varint lib (#677)

* Remove big-varint lib

* Move big-varint to utils

jest.browser.config.js

@@ -10,5 +10,4 @@ module.exports = {
     ],
     '^.+\\.jsx?$': 'babel-jest',
   },
-  transformIgnorePatterns: ['node_modules/(?!(big-varint)/)'],
 }

jest.config.ts

@@ -13,7 +13,6 @@ const config: Config.InitialOptions = {
   },
   testMatch: ['<rootDir>/test/**/*.(spec|test).ts?(x)'],
   testPathIgnorePatterns: ['<rootDir>/node_modules/', '<rootDir>/dist/'],
-  transformIgnorePatterns: ['/node_modules/(?!big-varint).+\\.js$'],
 }
 
 export default config

package.json

@@ -63,7 +63,6 @@
         "@noble/hashes": "^1.2.0",
         "@open-rpc/client-js": "^1.8.1",
         "@open-rpc/schema-utils-js": "1.15.0",
-        "big-varint": "^0.1.3",
         "bs58check": "^4.0.0",
         "decimal.js": "^10.4.3",
         "dotenv": "^16.0.3",

src/operation/operationManager.ts

@@ -1,4 +1,4 @@
-import { unsigned } from 'big-varint'
+import * as unsigned from '../utils/big-varint'
 import { Address } from '../basicElements/address'
 import { PrivateKey, PublicKey } from '../basicElements/keys'
 import { PublicAPI } from '../client'

src/utils/big-varint.ts

@@ -0,0 +1,60 @@
+/* eslint-disable @typescript-eslint/no-magic-numbers */
+// This code was taken from the lib big-varint. https://github.com/joeltg/big-varint/blob/65346e5688245b20f05e5ce2dd8c784eb3ae3e15/src/unsigned.ts#L1C1-L58C2
+const LIMIT = 0x7fn
+
+export function encodingLength(value: bigint): number {
+  let i = 0
+
+  for (; value >= 0x80n; i++) {
+    value >>= 7n
+  }
+
+  return i + 1
+}
+
+export function encode(
+  i: bigint,
+  buffer?: ArrayBuffer,
+  byteOffset?: number
+): Uint8Array {
+  if (i < 0n) {
+    throw new RangeError('value must be unsigned')
+  }
+
+  const byteLength = encodingLength(i)
+  buffer = buffer || new ArrayBuffer(byteLength)
+  byteOffset = byteOffset || 0
+  if (buffer.byteLength < byteOffset + byteLength) {
+    throw new RangeError(
+      'the buffer is too small to encode the number at the offset'
+    )
+  }
+
+  const array = new Uint8Array(buffer, byteOffset)
+
+  let offset = 0
+  while (LIMIT < i) {
+    array[offset++] = Number(i & LIMIT) | 0x80
+    i >>= 7n
+  }
+
+  array[offset] = Number(i)
+
+  return array
+}
+
+export function decode(data: Uint8Array, offset = 0): bigint {
+  let i = 0n
+  let n = 0
+  let b: number
+  do {
+    b = data[offset + n]
+    if (b === undefined) {
+      throw new RangeError('offset out of range')
+    }
+
+    i += BigInt(b & 0x7f) << BigInt(n * 7)
+    n++
+  } while (0x80 <= b)
+  return i
+}