remove deprecations, esm

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [18.x, 20.x, 22.x]
 
     steps:
       - uses: actions/checkout@v4
@@ -20,4 +20,4 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci
-      - run: npm test
+      - run: npm test

package.json

@@ -1,6 +1,6 @@
 {
   "name": "webrisk-hash",
-  "version": "2.0.3",
+  "version": "3.0.0",
   "description": "",
   "main": "index.js",
   "type": "module",

test/truncatedSHA256Prefix.js

@@ -6,7 +6,7 @@ test("len4", (t) => {
   // Example B1 from FIPS-180-2
   const input1 = "abc";
   const output1 = truncatedSha256Prefix(input1, 32);
-  const expected1 = new Buffer([0xba, 0x78, 0x16, 0xbf]);
+  const expected1 = new Buffer.from([0xba, 0x78, 0x16, 0xbf]);
   assert.equal(output1.length, 4); // 4 bytes == 32 bits
   for (let i = 0; i < output1.length; i++)
     assert.equal(output1[i], expected1[i]);
@@ -16,7 +16,7 @@ test("len6", (t) => {
   // Example B2 from FIPS-180-2
   const input2 = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
   const output2 = truncatedSha256Prefix(input2, 48);
-  const expected2 = new Buffer([0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06]);
+  const expected2 = new Buffer.from([0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06]);
   assert.equal(output2.length, 6);
   for (let i = 0; i < output2.length; i++)
     assert.equal(output2[i], expected2[i]);
@@ -26,7 +26,7 @@ test("len12", (t) => {
   // Example B3 from FIPS-180-2
   const input3 = Array(1000000).fill("a").join(""); // 'a' repeated a million times
   const output3 = truncatedSha256Prefix(input3, 96);
-  const expected3 = new Buffer([
+  const expected3 = new Buffer.from([
     0xcd, 0xc7, 0x6e, 0x5c, 0x99, 0x14, 0xfb, 0x92, 0x81, 0xa1, 0xc7, 0xe2,
   ]);
   assert.equal(output3.length, 12);

webrisk-hash.js

@@ -1,4 +1,4 @@
 #!/usr/bin/env node
-const webrisk = require("webrisk-hash");
+import { getPrefixMap } from "webrisk-hash";
 const res = webrisk.getPrefixMap(process.argv[2]);
 console.log(res.map(l => `${l[0]} ${l[1].toString("hex")}`).join('\n'));