Use NAPI instead

Author: cpuchainorg

node/binding.gyp

@@ -9,11 +9,12 @@
                 "../yespower-c/yespower-opt.c",
             ],
             "include_dirs": [
-                "<!(node -e \"require('nan')\")"
+                "<!@(node -p \"require('node-addon-api').include\")"
             ],
             "cflags_cc": [
                 "-std=c++17"
             ],
+            "defines": ["NAPI_DISABLE_CPP_EXCEPTIONS"]
         }
     ]
 }

node/index.d.ts

@@ -1 +1 @@
-export function yespower(input: Buffer, n?: number, r?: number, pers?: string): Buffer;
+export function yespower(input: Buffer, n?: number, r?: number, pers?: Buffer): Buffer;

node/package.json

@@ -18,6 +18,6 @@
     },
     "dependencies": {
         "bindings": "*",
-        "nan": "^2.22.2"
+        "node-addon-api": "^8.3.1"
     }
 }

node/test/index.js

@@ -40,7 +40,7 @@ const cases = [
         output: '1f0269acf565c49adc0ef9b8f26ab3808cdc38394a254fddeedcc3aacff6ad9d',
         N: 1024,
         r: 32,
-        pers: 'personality test',
+        pers: Buffer.from('personality test'),
     },
     {
         input: 'eebb7bf9a8c813b5e0a03ce627bd1a0c836e0a89793743666dc82b83e28e8f00',
@@ -165,27 +165,27 @@ const cases = [
     {
         input: '2538dad623dab29a3d5387804ab51dea411014fad9c47fb94b2d83e44358064b',
         output: '62c4ac19375787857e2e7c41282a58fb68638a25ba27402239edc8d2683b5126',
-        pers: 'pers',
+        pers: Buffer.from('pers'),
     },
     {
         input: '28d5ce4e064ddc5ecf7a62a65d245facb3b46d6d2d70cdcf5c413e1c4e205157',
         output: '9f82d3a2d796ac89aa012c71ccad798f5e10cf515dd6fb0fedceb44271029d43',
-        pers: 'pers',
+        pers: Buffer.from('pers'),
     },
     {
         input: '172aaa13d4b7d606134bc6989a84c403bac3b6c4f9f4504dd79b2618c11c63d3',
         output: '5bd719de97d5dbc0012bd576f778994ae9d3eeb31e12cfadeb58133a34c2ebef',
-        pers: 'pers',
+        pers: Buffer.from('pers'),
     },
     {
         input: 'c9d4866805b9e9788cf1c7f6a369e8932e5bc6e32a5c7a06c3ecb7e0ec8ebaff',
         output: 'ac22b64773effd8d0dbb088bd71b27449ec5c8c21ecc0262f615e920ea2df2a6',
-        pers: 'pers',
+        pers: Buffer.from('pers'),
     },
     {
         input: 'fae4f16aed075d1e94b6d913242840ad3933bc675aa72f2f647f1df60c431963',
         output: 'a625f58d4585b8bad21509f34f715f6a15a5e2741a89642e937587b5c4b68e8a',
-        pers: 'pers',
+        pers: Buffer.from('pers'),
     },
 ];
 
@@ -197,4 +197,4 @@ describe('Yespower', () => {
             assert.strictEqual(output, hashed.toString('hex'));
         }
     });
-});
+});

node/yarn.lock

@@ -14,7 +14,7 @@ file-uri-to-path@1.0.0:
   resolved "https://registry.yarnpkg.com/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz#553a7b8446ff6f684359c445f1e37a05dacc33dd"
   integrity sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==
 
-nan@^2.22.2:
-  version "2.22.2"
-  resolved "https://registry.yarnpkg.com/nan/-/nan-2.22.2.tgz#6b504fd029fb8f38c0990e52ad5c26772fdacfbb"
-  integrity sha512-DANghxFkS1plDdRsX0X9pm0Z6SJNN6gBdtXfanwoZ8hooC5gosGFSBGRYHUVPz1asKA/kMRqDRdHrluZ61SpBQ==
+node-addon-api@^8.3.1:
+  version "8.3.1"
+  resolved "https://registry.yarnpkg.com/node-addon-api/-/node-addon-api-8.3.1.tgz#53bc8a4f8dbde3de787b9828059da94ba9fd4eed"
+  integrity sha512-lytcDEdxKjGJPTLEfW4mYMigRezMlyJY8W4wxJK8zE533Jlb8L8dRuObJFWg2P+AuOIxoCgKF+2Oq4d4Zd0OUA==

node/yespower.cc

@@ -1,50 +1,52 @@
-#include <nan.h>
+#include <napi.h>
 
 extern "C" {
     #include "../yespower-c/yespower.h"
 }
 
-NAN_METHOD(yespower) {
-    if (info.Length() < 1 || !node::Buffer::HasInstance(info[0])) {
-        return Nan::ThrowTypeError("First argument must be a Buffer");
+Napi::Value YespowerFunc(const Napi::CallbackInfo& info) {
+    Napi::Env env = info.Env();
+
+    // Check input buffer
+    if (info.Length() < 1 || !info[0].IsBuffer()) {
+        Napi::TypeError::New(env, "First argument must be a Buffer").ThrowAsJavaScriptException();
+        return env.Null();
     }
 
     // Input buffer
-    char* input = node::Buffer::Data(info[0]);
-    uint32_t input_len = node::Buffer::Length(info[0]);
+    char* input = reinterpret_cast<char*>(info[0].As<Napi::Buffer<char>>().Data());
+    uint32_t input_len = info[0].As<Napi::Buffer<char>>().Length();
 
     // Optional N (default: 2048)
     uint32_t N = 2048;
-
-    if (info.Length() > 1 && info[1]->IsUint32()) {
-        N = Nan::To<uint32_t>(info[1]).FromJust();
+    if (info.Length() > 1 && info[1].IsNumber()) {
+        N = info[1].As<Napi::Number>().Uint32Value();
     }
 
     // Optional r (default: 32)
     uint32_t r = 32;
-
-    if (info.Length() > 2 && info[2]->IsUint32()) {
-        r = Nan::To<uint32_t>(info[2]).FromJust();
+    if (info.Length() > 2 && info[2].IsNumber()) {
+        r = info[2].As<Napi::Number>().Uint32Value();
     }
 
     // Optional pers (default: null)
     char* pers = nullptr;
     uint32_t pers_len = 0;
-
-    if (info.Length() > 3 && info[3]->IsString()) {
-        pers = (char*)*Nan::Utf8String(info[3]);
-        pers_len = strlen(pers);
+    if (info.Length() > 3 && info[3].IsBuffer()) {
+        pers = reinterpret_cast<char*>(info[3].As<Napi::Buffer<char>>().Data());
+        pers_len = info[3].As<Napi::Buffer<char>>().Length();
     }
 
     char output[32];
 
     yespower_hash(input, input_len, N, r, pers, pers_len, output);
 
-    info.GetReturnValue().Set(Nan::CopyBuffer(output, 32).ToLocalChecked());
+    return Napi::Buffer<char>::Copy(env, output, 32);
 }
 
-NAN_MODULE_INIT(init) {
-    Nan::Export(target, "yespower", yespower);
+Napi::Object Init(Napi::Env env, Napi::Object exports) {
+    exports.Set("yespower", Napi::Function::New(env, YespowerFunc));
+    return exports;
 }
 
-NODE_MODULE(yespower, init)
+NODE_API_MODULE(yespower, Init)