style: adopt updated eslint rules

Author: developher-net

2018/day-04/guards.js

@@ -44,7 +44,7 @@ const findSleepiestTimes = (guard, data) => {
   const getTimesAsleep = (activity) => {
     return activity.split('')
       .map((state, idx) => {
-        return { id: idx, state: state } // parse the activity stream into data
+        return { id: idx, state } // parse the activity stream into data
       }).filter((minute) => minute.state === '#') // get only the times the guard is asleep
       .map((minute) => minute.id) // convert into a list of times
   }

2018/day-06/coordinates.js

@@ -76,8 +76,8 @@ const blankGrid = () => {
     grid[x] = grid[x] || []
     for (let y = minY; y < maxY; y++) {
       grid[x][y] = grid[x][y] || {
-        x: x,
-        y: y
+        x,
+        y
       }
     }
   }

2018/day-09/marbles.js

@@ -160,7 +160,7 @@ const playGame = (playerCount, highMarble, showBoard) => {
 
   // tally the results
   const results = {
-    players: players,
+    players,
     highScore: players.sort((a, b) => b - a)[0]
   }
 

2018/day-10/solution.js

@@ -21,7 +21,7 @@ const init = (data) => {
   const best = beaconTracker.frameMeta.reduce((acc, curr, idx) => {
     return (curr.focus < acc.focus)
       ? {
-          idx: idx,
+          idx,
           focus: curr.focus,
           dims: curr.dims
         }

2018/day-11/fuel-cells.js

@@ -95,7 +95,7 @@ class Rack {
   findMaxSquare (size) {
     return this.cells.reduce((acc, cell, idx) => {
       const squarePower = this._tallySquare(idx, size)
-      return (squarePower !== null && squarePower > acc.power) ? { power: squarePower, idx: idx } : acc
+      return (squarePower !== null && squarePower > acc.power) ? { power: squarePower, idx } : acc
     }, { power: -99999, idx: -1 })
   }
 }

2018/day-12/plants.js

@@ -63,7 +63,7 @@ class Plants {
 
       return {
         position: pot.position,
-        state: state
+        state
       }
     })