update-dev-dependencies

index.js

@@ -1034,7 +1034,7 @@ class ModbusRTU extends EventEmitter {
         }
 
         const code = 15;
-        let i = 0;
+        let i;
 
         // set state variables
         this._transactions[this._port._transactionIdWrite] = {

package.json

@@ -48,12 +48,12 @@
   },
   "homepage": "https://github.com/yaacov/node-modbus-serial#readme",
   "devDependencies": {
-    "@eslint/js": "^9.39.1",
-    "chai": "^4.5.0",
-    "chai-as-promised": "^7.1.2",
+    "@eslint/js": "^10.0.1",
+    "chai": "^6.2.2",
+    "chai-as-promised": "^8.0.2",
     "clean-jsdoc-theme": "^4.3.0",
     "eslint": "^10.0.3",
-    "globals": "^16.5.0",
+    "globals": "^17.4.0",
     "jsdoc": "^4.0.5",
     "mocha": "^11.7.5",
     "mockery": "^2.1.0",
@@ -63,7 +63,7 @@
     "webbluetooth": "^3.6.0"
   },
   "dependencies": {
-    "debug": "^4.3.1"
+    "debug": "^4.4.3"
   },
   "optionalDependencies": {
     "serialport": "^12.0.0"

ports/asciiport.js

@@ -218,7 +218,7 @@ class AsciiPort extends EventEmitter {
             return;
         }
 
-        let length = null;
+        let length;
 
         // remember current unit and command
         this._id = data[0];

ports/c701port.js

@@ -56,7 +56,7 @@ class UdpPort extends EventEmitter {
 
         // wait for answer
         this._client.on("message", function(data) {
-            let buffer = null;
+            let buffer;
 
             // check expected length
             if (modbus.length < 6) return;
@@ -148,7 +148,7 @@ class UdpPort extends EventEmitter {
             return;
         }
 
-        let length = null;
+        let length;
 
         // remember current unit and command
         this._id = data[0];

ports/rtubufferedport.js

@@ -203,7 +203,7 @@ class RTUBufferedPort extends EventEmitter {
             return;
         }
 
-        let length = null;
+        let length;
 
         // remember current unit and command
         this._id = data[0];

ports/telnetport.js

@@ -227,7 +227,7 @@ class TelnetPort extends EventEmitter {
             return;
         }
 
-        let length = null;
+        let length;
 
         // remember current unit and command
         this._id = data[0];

ports/testport.js

@@ -71,12 +71,12 @@ class TestPort extends EventEmitter {
      * @param {Buffer} data
      */
     write(data) {
-        let buffer = null;
-        let length = null;
-        let address = null;
-        let value = null;
-        let state = null;
-        let i = null;
+        let buffer;
+        let length;
+        let address;
+        let value;
+        let state;
+        let i;
 
         if(data.length < MIN_DATA_LENGTH) {
             modbusSerialDebug("expected length of data is to small - minimum is " + MIN_DATA_LENGTH);

ports/udpport.js

@@ -28,10 +28,11 @@ class ModbusUdpPort extends EventEmitter {
         this.ip = ip;
         this.openFlag = false;
         this._transactionIdWrite = 1;
-        this.port = options.port || MODBUS_PORT;
 
-        // options
-        if (typeof(options) === "undefined") options = {};
+        if (typeof options === "undefined") {
+            options = {};
+        }
+        this.port = options.port || MODBUS_PORT;
 
         // create a socket
         this._client = dgram.createSocket("udp4");

servers/servertcp_handler.js

@@ -140,9 +140,9 @@ function _handleReadCoilsOrInputDiscretes(requestBuffer, vector, unitID, callbac
                 msg: "Invalid length"
             });
 
-        let i = 0;
-        let cb = null;
-        let promiseOrValue = null;
+        let i;
+        let cb;
+        let promiseOrValue;
 
         if (isGetCoil && vector.getCoil.length === 3) {
             for (i = 0; i < length; i++) {

test/servers/servertcp.enron.test.js

@@ -1,7 +1,8 @@
 "use strict";
 
 const chai = require("chai");
-const chaiAsPromised = require("chai-as-promised");
+const chaiAsPromisedModule = require("chai-as-promised");
+const chaiAsPromised = chaiAsPromisedModule.default ?? chaiAsPromisedModule;
 // Load chai-as-promised support
 chai.use(chaiAsPromised);
 // Initialise should API (attaches as a property on Object)