1 files changed, 0 insertions, 37 deletions
diff --git a/src/content/usecases/HintKeyProducer.ts b/src/content/usecases/HintKeyProducer.ts
deleted file mode 100644
index a5e2877..0000000
--- a/src/content/usecases/HintKeyProducer.ts
+++ /dev/null
@@ -1,37 +0,0 @@
-export default class HintKeyProducer {
-  private charset: string;
-
-  private counter: number[];
-
-  constructor(charset: string) {
-    if (charset.length === 0) {
-      throw new TypeError("charset is empty");
-    }
-
-    this.charset = charset;
-    this.counter = [];
-  }
-
-  produce(): string {
-    this.increment();
-
-    return this.counter.map((x) => this.charset[x]).join("");
-  }
-
-  private increment(): void {
-    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();
-    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;
-      num = ~~(num / len);
-    }
-    this.counter.reverse();
-  }
-}