Apply standard code style

Sadly, standard does not support private fields (yet)

Backtracking/RatInAMaze.js

@@ -108,13 +108,6 @@ function getPath (grid) {
  * Creates an instance of the "rat in a maze" based on a given grid (maze).
  */
 export class RatInAMaze {
-
-  /** Path from the source [0, 0] to the target [N-1, N-1]. */
-  #_path = ''
-
-  /** Whether the rat could find a way to the target or not. */
-  #_solved = false
-
   constructor (grid) {
     // first, let's do some error checking on the input
     validateGrid(grid)
@@ -123,17 +116,11 @@ export class RatInAMaze {
     const solution = getPath(grid)
 
     if (solution !== false) {
-      this.#_path = solution
-      this.#_solved = true
+      this.path = solution
+      this.solved = true
+    } else {
+      this.path = ''
+      this.solved = false
     }
   }
-
-  get solved () {
-    return this.#_solved
-  }
-
-  get path () {
-    return this.#_path
-  }
-
 }

Backtracking/tests/RatInAMaze.test.js

@@ -5,12 +5,16 @@ describe('RatInAMaze', () => {
     const values = [undefined, null, {}, 42, 'hello, world']
 
     for (const value of values) {
-      expect(() => {new RatInAMaze(value)}).toThrow()
+      // we deliberately want to check whether this constructor call fails or not
+      // eslint-disable-next-line no-new
+      expect(() => { new RatInAMaze(value) }).toThrow()
     }
   })
 
   it('should fail for an empty array', () => {
-    expect(() => {new RatInAMaze([])}).toThrow()
+    // we deliberately want to check whether this constructor call fails or not
+    // eslint-disable-next-line no-new
+    expect(() => { new RatInAMaze([]) }).toThrow()
   })
 
   it('should fail for a non-square array', () => {
@@ -19,14 +23,18 @@ describe('RatInAMaze', () => {
       [0, 0]
     ]
 
-    expect(() => {new RatInAMaze(array)}).toThrow()
+    // we deliberately want to check whether this constructor call fails or not
+    // eslint-disable-next-line no-new
+    expect(() => { new RatInAMaze(array) }).toThrow()
   })
 
   it('should fail for arrays containing invalid values', () => {
     const values = [[[2]], [['a']]]
 
     for (const value of values) {
-      expect(() => {new RatInAMaze(value)}).toThrow()
+      // we deliberately want to check whether this constructor call fails or not
+      // eslint-disable-next-line no-new
+      expect(() => { new RatInAMaze(value) }).toThrow()
     }
   })