Complete Email Sortierer implementation with Appwrite and Stripe integration

server/node_modules/@exodus/bytes/wif.js

@@ -0,0 +1,42 @@
+import { toBase58checkSync, fromBase58checkSync } from '@exodus/bytes/base58check.js'
+import { assertUint8 } from './assert.js'
+
+// Mostly matches npmjs.com/wif, but with extra checks + using our base58check
+// Also no inconsistent behavior on Buffer/Uint8Array input
+
+function from(arr, expectedVersion) {
+  assertUint8(arr)
+  const version = arr[0]
+  if (expectedVersion !== undefined && version !== expectedVersion) {
+    throw new Error('Invalid network version')
+  }
+
+  // Makes a copy, regardless of input being a Buffer or a Uint8Array (unlike .slice)
+  const privateKey = Uint8Array.from(arr.subarray(1, 33))
+  if (arr.length === 33) return { version, privateKey, compressed: false }
+  if (arr.length !== 34) throw new Error('Invalid WIF length')
+  if (arr[33] !== 1) throw new Error('Invalid compression flag')
+  return { version, privateKey, compressed: true }
+}
+
+function to({ version: v, privateKey, compressed }) {
+  if (!Number.isSafeInteger(v) || v < 0 || v > 0xff) throw new Error('Missing or invalid version')
+  assertUint8(privateKey, { length: 32, name: 'privateKey' })
+  if (privateKey.length !== 32) throw new TypeError('Invalid privateKey length')
+  const out = new Uint8Array(compressed ? 34 : 33)
+  out[0] = v
+  out.set(privateKey, 1)
+  if (compressed) out[33] = 1
+  return out
+}
+
+// Async performance is worse here, so expose the same internal methods as sync for now
+// ./base58check is sync internally anyway for now, so doesn't matter until that is changed
+
+export const fromWifStringSync = (string, version) => from(fromBase58checkSync(string), version)
+// export const fromWifString = async (string, version) => from(await fromBase58check(string), version)
+export const fromWifString = async (string, version) => from(fromBase58checkSync(string), version)
+
+export const toWifStringSync = (wif) => toBase58checkSync(to(wif))
+// export const toWifString = async (wif) => toBase58check(to(wif))
+export const toWifString = async (wif) => toBase58checkSync(to(wif))