Refactored wifi and ble into typescript and converted logic to async/await for most methods. Compiles without errors ATM.

lib/ble/index.js

@@ -161,6 +161,7 @@ class BLE {
     * @constructor
     */
     constructor(bleGetState) {
+        this.listeners = {};
         log.info('Starting bluetooth service');
         getState = bleGetState;
         bleno_1.default.on('stateChange', state => {
@@ -209,7 +210,6 @@ class BLE {
         let result = {};
         let utf8;
         let obj;
-        let fn;
         if (offset) {
             log.warn(`Offset scenario`);
             result = bleno_1.default.Characteristic.RESULT_ATTR_NOT_LONG;
@@ -218,9 +218,8 @@ class BLE {
         utf8 = data.toString('utf8');
         obj = JSON.parse(utf8);
         result = bleno_1.default.Characteristic.RESULT_SUCCESS;
-        fn = `_on${capitalize(obj.type)}`;
+        if (obj.type && this.listeners[obj.type]) {
-        if (obj.type && this[fn]) {
+            return this.listeners[obj.type](obj, () => {
-            return this[fn](obj, () => {
                 callback(result);
             });
         }
@@ -241,7 +240,7 @@ class BLE {
     * @param {function} 	callback 	Invoked when the event is triggered
     */
     on(eventName, callback) {
-        this[`_on${capitalize(eventName)}`] = callback;
+        this.listeners[eventName] = callback;
     }
 }
 module.exports = BLE;

lib/wifi/index.js

@@ -9,7 +9,7 @@ const iwlist = '/sbin/iwlist wlan0 scanning | grep "ESSID:"';
 const iwgetid = '/sbin/iwgetid';
 const log = require('../log')('wifi');
 const child_process_1 = require("child_process");
-const fs_1 = require("fs");
+const fs_extra_1 = require("fs-extra");
 /** Class representing the wifi features */
 class Wifi {
     constructor() {
@@ -59,7 +59,7 @@ class Wifi {
         let parsed;
         let current;
         try {
-            data = await fs_1.readFile(filePath, 'utf8');
+            data = await fs_extra_1.readFile(filePath, 'utf8');
         }
         catch (err) {
             log.error('_readConfig', err);
@@ -85,7 +85,7 @@ class Wifi {
     */
     async _writeConfig(data) {
         try {
-            await fs_1.writeFile(filePath, data, { encoding: 'utf-8' });
+            await fs_extra_1.writeFile(filePath, data, 'utf8');
         }
         catch (err) {
             log.error('_readConfigCb', err);

src/ble/index.ts

@@ -183,8 +183,11 @@ function capitalize (str : string) {
     return str[0].toUpperCase() + str.slice(1)
 }
 
+type functionKeys = "_onRead" | "_onWrite";
+
 /** Class representing the bluetooth interface */
 class BLE {
+	listeners : any = {}	
 	/**
 	* Establishes Bluetooth Low Energy services, accessible to process through this class
 	*
@@ -228,6 +231,7 @@ class BLE {
 
 		this._refreshWifi()
 	}
+	
 	private async _refreshWifi () {
 		let ssid : string
 
@@ -241,11 +245,11 @@ class BLE {
 		currentAddr = getIp()
 		log.info('wifi.getNetwork', {ssid : ssid, ip : currentAddr })
 	}
+
 	private _onWrite (data : any, offset : number, withoutResponse : Function, callback : Function) {
-		let result = {}
+		let result : any = {}
-		let utf8
+		let utf8 : string
-		let obj
+		let obj : any
-		let fn
 
 		if (offset) {
 			log.warn(`Offset scenario`)
@@ -256,17 +260,16 @@ class BLE {
 	 	utf8 = data.toString('utf8')
  		obj = JSON.parse(utf8)
 	 	result = bleno.Characteristic.RESULT_SUCCESS
-		fn = `_on${capitalize(obj.type)}`
 		 
-	 	if (obj.type && this[fn]) {
+	 	if (obj.type && this.listeners[obj.type]) {
-	 		return this[fn](obj, () => {
+	 		return this.listeners[obj.type](obj, () => {
 	 			callback(result)
 	 		})
 	 	} else {
 	 		return callback(result)
 	 	}
-	 	
 	}
+
 	private _onRead (offset : number, callback : Function) {
 		const result = bleno.Characteristic.RESULT_SUCCESS
 		const state = getState()
@@ -280,7 +283,7 @@ class BLE {
 	* @param {function} 	callback 	Invoked when the event is triggered
 	*/
 	on (eventName : string, callback : Function) {
-		this[`_on${capitalize(eventName)}`] = callback
+		this.listeners[eventName] = callback
 	}
 
 }

src/wifi/index.ts

@@ -11,7 +11,7 @@ const iwgetid : string = '/sbin/iwgetid'
 
 const log : any = require('../log')('wifi')
 import { exec } from 'child_process'
-import { readFile, writeFile } from 'fs'
+import { readFile, writeFile } from 'fs-extra'
 import { reject } from 'q'
 
 interface Network {
@@ -97,7 +97,7 @@ export class Wifi {
 	*/
 	private async _writeConfig (data : string) {
 		try {
-			await writeFile(filePath, data, { encoding : 'utf-8' })
+			await writeFile(filePath, data, 'utf8')
 		} catch (err) {
 			log.error('_readConfigCb', err)
 			throw err