1 files changed, 2 insertions, 2 deletions
diff --git a/src/content/usecases/HintKeyProducer.ts b/src/content/usecases/HintKeyProducer.ts
index 241cd56..68f3fbd 100644
--- a/src/content/usecases/HintKeyProducer.ts
+++ b/src/content/usecases/HintKeyProducer.ts
@@ -19,14 +19,14 @@ export default class HintKeyProducer {
   }
 
   private increment(): void {
-    let max = this.charset.length - 1;
+    const max = this.charset.length - 1;
     if (this.counter.every(x => x === max)) {
       this.counter = new Array(this.counter.length + 1).fill(0);
       return;
     }
 
     this.counter.reverse();
-    let len = this.charset.length;
+    const len = this.charset.length;
     let num = this.counter.reduce((x, y, index) => x + y * len ** index) + 1;
     for (let i = 0; i < this.counter.length; ++i) {
       this.counter[i] = num % len;