BassBoulder
diff --git a/‎JavaScript/Exercism/FactorySensors.js‎
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+// @ts-check
+
+export class ArgumentError extends Error {}
+
+export class OverheatingError extends Error {
+  constructor(temperature) {
+    super(`The temperature is ${temperature} ! Overheating !`);
+    this.temperature = temperature;
+  }
+}
+
+/**
+ * Check if the humidity level is not too high.
+ *
+ * @param {number} humidityPercentage
+ * @throws {Error}
+ */
+export function checkHumidityLevel(humidityPercentage) {
+  if(humidityPercentage > 70){
+    throw new Error('It/s getting hot in here');
+  }
+}
+
+/**
+ * Check if the temperature is not too high.
+ *
+ * @param {number|null} temperature
+ * @throws {ArgumentError|OverheatingError}
+ */
+export function reportOverheating(temperature) {
+  if(temperature == null){
+    throw new ArgumentError;
+  }
+  if(temperature > 500){
+    throw new OverheatingError(temperature);
+  }
+}
+
+/**
+ *  Triggers the needed action depending on the result of the machine check.
+ *
+ * @param {{
+ * check: function,
+ * alertDeadSensor: function,
+ * alertOverheating: function,
+ * shutdown: function
+ * }} actions
+ * @throws {ArgumentError|OverheatingError|Error}
+ */
+export function monitorTheMachine(actions) {
+  try{
+    actions.check();
+  }
+  catch(error){
+    
+    switch(error.constructor){
+        
+      case ArgumentError:
+        actions.alertDeadSensor();
+        break;
+        
+      case OverheatingError: {
+        if(error.temperature < 600){
+          actions.alertOverheating();
+          break;
+        }
+        if(error.temperature > 600){
+          actions.shutdown();
+          break;
+        }
+      }
+      default:
+        throw error;
+    }
+  }
+}