refactoring

2021/10/part2.mjs

@@ -2,7 +2,7 @@ import fs from "fs-extra";
 import fp from "lodash/fp.js";
 import _ from "lodash";
 
-import * as p1 from './part1.mjs';
+import * as p1 from "./part1.mjs";
 
 function completionString(line) {
     const stack = [];
@@ -10,35 +10,33 @@ function completionString(line) {
     for (const c of line) {
         if (p1.closing[c]) {
             stack.unshift(p1.closing[c]);
-        } else {
-            if(c !== stack.shift())  return;
+        } else if (c !== stack.shift()) {
+            return;
         }
     }
 
     return stack;
-
 }
 
 export function linesScore(lines) {
-    lines = lines.map( completionString ).filter(x=>x);
+    lines = lines.map(completionString).filter((x) => x);
 
     const points = {
-        ')': 1,
-        ']': 2,
-        '}': 3,
-        '>': 4,
-    }
+        ")": 1,
+        "]": 2,
+        "}": 3,
+        ">": 4,
+    };
 
-    const lineScore = line => line.reduce( (a,b) => 5*a + points[b], 0 );
+    const lineScore = (line) => line.reduce((a, b) => 5 * a + points[b], 0);
 
     return lines.map(lineScore);
 }
 
 export function solution(lines) {
-
     const scores = linesScore(lines);
 
-    scores.sort( (a,b) => a<b?-1:1 );
+    scores.sort((a, b) => (a < b ? -1 : 1));
 
     return scores[(scores.length - 1) / 2];
 }