Fix linting issues (#196)

Author: dnicolson

lib/parameter-checker.js

@@ -1,5 +1,7 @@
 "use strict";
 
+const { Buffer } = require('buffer');
+
 class ParameterChecker {
   constructor() {
     this._error = null;

lib/switchbot-advertising.js

@@ -1,5 +1,7 @@
 "use strict";
 
+const { Buffer } = require('buffer');
+
 class SwitchbotAdvertising {
   constructor() {}
 
@@ -595,8 +597,7 @@ class SwitchbotAdvertising {
 
     const temp_sign = byte4 & 0b10000000 ? 1 : -1;
     const temp_c = temp_sign * ((byte4 & 0b01111111) + (byte3 & 0b00001111) / 10);
-    const temp_f = (temp_c * 9 / 5) + 32;
-    temp_f = Math.round(temp_f * 10) / 10;
+    const temp_f = Math.round(((temp_c * 9 / 5) + 32) * 10) / 10;
 
     const data = {
       model: "i",

lib/switchbot-device-woblindtilt.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 let SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoBlindTilt extends SwitchbotDevice {

lib/switchbot-device-wobulb.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 const SwitchbotDevice = require("./switchbot-device.js");
 
 /**

lib/switchbot-device-wocurtain.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 const SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoCurtain extends SwitchbotDevice {

lib/switchbot-device-wohand.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 const SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoHand extends SwitchbotDevice {

lib/switchbot-device-wohumi.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 const SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoHumi extends SwitchbotDevice {

lib/switchbot-device-woplugmini.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 const SwitchbotDevice = require("./switchbot-device.js");
 
 /**

lib/switchbot-device-wostrip.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 const SwitchbotDevice = require("./switchbot-device.js");
 
 /**

lib/switchbot-device.js

@@ -1,4 +1,7 @@
 "use strict";
+
+const { Buffer } = require('buffer');
+
 const parameterChecker = require("./parameter-checker.js");
 const switchbotAdvertising = require("./switchbot-advertising.js");
 
@@ -330,7 +333,7 @@ class SwitchbotDevice {
 
   _disconnect() {
     if (this._was_connected_explicitly) {
-      return new Promise((resolve, reject) => {
+      return new Promise((resolve) => {
         resolve();
       });
     } else {
@@ -351,7 +354,7 @@ class SwitchbotDevice {
    * ---------------------------------------------------------------- */
   getDeviceName() {
     return new Promise((resolve, reject) => {
-      const name = "";
+      let name = "";
       this._connect()
         .then(() => {
           if (!this._chars.device) {