3 files changed, 17 insertions, 31 deletions

diff --git a/modern/src/common/converter.js b/modern/src/common/converter.js
index 26e2a82b..9cdc6239 100644
--- a/modern/src/common/converter.js
+++ b/modern/src/common/converter.js
@@ -1,47 +1,39 @@
-const speedConverter = (value, unit, back = false) => {
-  let factor;
+const speedConverter = unit => {
   switch (unit) {
     case 'kmh':
-      factor = 1.852;
-      break;
+      return 1.852;
     case 'mph':
-      factor = 1.15078;
-      break;
+      return 1.15078;
     case 'kn':
     default:
-      factor = 1;
+      return 1;
   }
-  return back ? value / factor: value * factor;
 };
 
-const distanceConverter = (value, unit, back = false) => {
-  let factor;
+const distanceConverter = unit => {
   switch (unit) {
     case 'mi':
-      factor = 0.000621371;
-      break;
+      return 0.000621371;
     case 'nmi':
-      factor = 0.000539957;
-      break;
+      return 0.000539957;
     case 'km':
     default:
-      factor = 0.001;
-  }
-  return back ? value / factor : value * factor;  
+      return 0.001;
+  } 
 }
 
 export const speedFromKnots = (value, unit) => {
-  return speedConverter(value, unit);
+  return value * speedConverter(unit);
 }
 
 export const speedToKnots = (value, unit) => {
-  return speedConverter(value, unit, true);
+  return value / speedConverter(unit);
 }
 
 export const distanceFromMeters = (value, unit) => {
-  return distanceConverter(value, unit);
+  return value * distanceConverter(unit);
 }
 
 export const distanceToMeters = (value, unit) => {
-  return distanceConverter(value, unit, true);
+  return value / distanceConverter(unit);
 }
diff --git a/modern/src/settings/MaintenancePage.js b/modern/src/settings/MaintenancePage.js
index 5ac98c93..9263ee30 100644
--- a/modern/src/settings/MaintenancePage.js
+++ b/modern/src/settings/MaintenancePage.js
@@ -38,7 +38,7 @@ const MaintenancePage = () => {
 
   const onMaintenanceTypeChange = event => {
     const newValue = event.target.value;
-    setItem({...item, type: newValue, start: 0, period: 0});
+    setItem({ ...item, type: newValue, start: 0, period: 0 });
 
     const attribute = positionAttributes[newValue];
     if (attribute && attribute.dataType) {
@@ -55,7 +55,7 @@ const MaintenancePage = () => {
     }
   }
 
-  const rawToValue = (value) => {
+  const rawToValue = value => {
 
     const attribute = positionAttributes[item.type];
     if (attribute && attribute.dataType) {
@@ -64,15 +64,12 @@ const MaintenancePage = () => {
           return speedFromKnots(value, speedUnit);
         case 'distance':
           return distanceFromMeters(value, distanceUnit);
-        default:
-          return value;
       }
     }
-
     return value;
   }
 
-  const valueToRaw = (value) => {
+  const valueToRaw = value => {
 
     const attribute = positionAttributes[item.type];
     if (attribute && attribute.dataType) {
@@ -81,11 +78,8 @@ const MaintenancePage = () => {
           return speedToKnots(value, speedUnit);
         case 'distance':
           return distanceToMeters(value, distanceUnit);
-        default:
-          return value;
       }
     }
-
     return value;
   }
 
diff --git a/modern/src/settings/MaintenancesPage.js b/modern/src/settings/MaintenancesPage.js
index 5e74e5a6..7ba4bd29 100644
--- a/modern/src/settings/MaintenancesPage.js
+++ b/modern/src/settings/MaintenancesPage.js
@@ -63,7 +63,7 @@ const MaintenancesView = ({ updateTimestamp, onMenuClick }) => {
         {items.map(item => (
           <TableRow key={item.id}>
             <TableCell className={classes.columnAction} padding="none">
-              <IconButton onClick={(event) => onMenuClick(event.currentTarget, item.id)}>
+              <IconButton onClick={event => onMenuClick(event.currentTarget, item.id)}>
                 <MoreVertIcon />
               </IconButton>
             </TableCell>