feat: hybrid cjs and esm support

.github/workflows/main_ci.yml

@@ -26,4 +26,14 @@ jobs:
           node-version: 18
           registry-url: https://registry.npmjs.org/
       - run: npm ci
-      - run: npm run standard
+      - run: npm run standard
+  gitdiff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+          registry-url: https://registry.npmjs.org/
+      - run: npm ci
+      - run: npm run gitdiff

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 .nyc_output
+coverage

README.md

@@ -10,15 +10,20 @@ Bitcoin Wallet Import Format encoding/decoding module.
 ## Example
 
 ``` javascript
-var wif = require('wif')
+import * as wif from "wif"
 var privateKey = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex')
-var key = wif.encode(128, privateKey, true) // for the testnet use: wif.encode(239, ...
+var key = wif.encode({version: 128, privateKey, compressed: true}) // for the testnet use: wif.encode(239, ...
 // => KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn
 
 var obj = wif.decode(key)
 // => {
 //	version: 128,
-//	privateKey: <Buffer 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01>,
+//	privateKey: Uint8Array(32) [
+//     0, 0, 0, 0, 0, 0, 0, 0, 0,
+//     0, 0, 0, 0, 0, 0, 0, 0, 0,
+//     0, 0, 0, 0, 0, 0, 0, 0, 0,
+//     0, 0, 0, 0, 1
+//   ],
 //	compressed: true
 //}